leucine-rich repeats-containing G protein-coupled receptor 5, member of the class A family of ...
558-831
2.69e-180
leucine-rich repeats-containing G protein-coupled receptor 5, member of the class A family of seven-transmembrane G protein-coupled receptors; The leucine-rich repeat containing G-protein coupled receptor LGR6, together with its family members LGR4 and LGR5, is structurally related to the glycoprotein hormone receptor family, which includes the luteinizing hormone (LH) receptor, the follicle-stimulating hormone (FSH) receptor, and the pituitary thyroid-stimulating hormone (TSH) receptor. LGR4-6 are receptors for the R-spondin (Rspo) family of secreted proteins containing two N-terminal furin-like repeats and a thrombospondin domain. The Rspo proteins are involved in regulating proliferation and differentiation of adult stem cells by potently enhancing the WNT-stimulated beta-catenin signaling. LGR6 serves as a marker of multipotent stem cells in the hair follicle that generate all skin cell lineages, whereas LGR5 is a marker for resident stem cell in numerous epithelial cell layers, including small intestine, colon, stomach, and kidney. In addition, LGR4 is broadly expressed in proliferating cells, and its deficient mice display development defects in multiple organs. Members of this group are characterized by a very large extracellular N-terminal domain containing 17 leucine-rich repeats (LRRs), flanked by cysteine-rich N- and C-terminal capping domains, and the extracellular domain is responsible for high-affinity binding with the Rspo proteins.
:
Pssm-ID: 320485 Cd Length: 274 Bit Score: 520.94 E-value: 2.69e-180
Leucine rich repeat N-terminal domain; Leucine Rich Repeats pfam00560 are short sequence ...
33-65
5.73e-04
Leucine rich repeat N-terminal domain; Leucine Rich Repeats pfam00560 are short sequence motifs present in a number of proteins with diverse functions and cellular locations. Leucine Rich Repeats are often flanked by cysteine rich domains. This domain is often found at the N-terminus of tandem leucine rich repeats.
:
Pssm-ID: 396168 [Multi-domain] Cd Length: 28 Bit Score: 37.99 E-value: 5.73e-04
leucine-rich repeats-containing G protein-coupled receptor 5, member of the class A family of ...
558-831
2.69e-180
leucine-rich repeats-containing G protein-coupled receptor 5, member of the class A family of seven-transmembrane G protein-coupled receptors; The leucine-rich repeat containing G-protein coupled receptor LGR6, together with its family members LGR4 and LGR5, is structurally related to the glycoprotein hormone receptor family, which includes the luteinizing hormone (LH) receptor, the follicle-stimulating hormone (FSH) receptor, and the pituitary thyroid-stimulating hormone (TSH) receptor. LGR4-6 are receptors for the R-spondin (Rspo) family of secreted proteins containing two N-terminal furin-like repeats and a thrombospondin domain. The Rspo proteins are involved in regulating proliferation and differentiation of adult stem cells by potently enhancing the WNT-stimulated beta-catenin signaling. LGR6 serves as a marker of multipotent stem cells in the hair follicle that generate all skin cell lineages, whereas LGR5 is a marker for resident stem cell in numerous epithelial cell layers, including small intestine, colon, stomach, and kidney. In addition, LGR4 is broadly expressed in proliferating cells, and its deficient mice display development defects in multiple organs. Members of this group are characterized by a very large extracellular N-terminal domain containing 17 leucine-rich repeats (LRRs), flanked by cysteine-rich N- and C-terminal capping domains, and the extracellular domain is responsible for high-affinity binding with the Rspo proteins.
Pssm-ID: 320485 Cd Length: 274 Bit Score: 520.94 E-value: 2.69e-180
protein phosphatase 1 regulatory subunit 42; Protein phosphatase 1 regulatory subunit 42 ...
161-386
4.82e-14
protein phosphatase 1 regulatory subunit 42; Protein phosphatase 1 regulatory subunit 42 (PPP1R42), also known as leucine-rich repeat-containing protein 67 (lrrc67) or testis leucine-rich repeat (TLRR) protein, plays a role in centrosome separation. PPP1R42 has been shown to interact with the well-conserved signaling protein phosphatase-1 (PP1) and thereby increasing PP1's activity, which counters centrosome separation. Inhibition of PPP1R42 expression increases the number of centrosomes per cell while its depletion reduces the activity of PP1 leading to activation of NEK2, the kinase responsible for phosphorylation of centrosomal linker proteins promoting centrosome separation.
Pssm-ID: 411060 [Multi-domain] Cd Length: 220 Bit Score: 72.13 E-value: 4.82e-14
7 transmembrane receptor (rhodopsin family); This family contains, amongst other ...
575-820
1.20e-10
7 transmembrane receptor (rhodopsin family); This family contains, amongst other G-protein-coupled receptors (GCPRs), members of the opsin family, which have been considered to be typical members of the rhodopsin superfamily. They share several motifs, mainly the seven transmembrane helices, GCPRs of the rhodopsin superfamily. All opsins bind a chromophore, such as 11-cis-retinal. The function of most opsins other than the photoisomerases is split into two steps: light absorption and G-protein activation. Photoisomerases, on the other hand, are not coupled to G-proteins - they are thought to generate and supply the chromophore that is used by visual opsins.
Pssm-ID: 459624 [Multi-domain] Cd Length: 256 Bit Score: 63.09 E-value: 1.20e-10
Leucine rich repeat N-terminal domain; Leucine Rich Repeats pfam00560 are short sequence ...
33-65
5.73e-04
Leucine rich repeat N-terminal domain; Leucine Rich Repeats pfam00560 are short sequence motifs present in a number of proteins with diverse functions and cellular locations. Leucine Rich Repeats are often flanked by cysteine rich domains. This domain is often found at the N-terminus of tandem leucine rich repeats.
Pssm-ID: 396168 [Multi-domain] Cd Length: 28 Bit Score: 37.99 E-value: 5.73e-04
leucine-rich repeats-containing G protein-coupled receptor 5, member of the class A family of ...
558-831
2.69e-180
leucine-rich repeats-containing G protein-coupled receptor 5, member of the class A family of seven-transmembrane G protein-coupled receptors; The leucine-rich repeat containing G-protein coupled receptor LGR6, together with its family members LGR4 and LGR5, is structurally related to the glycoprotein hormone receptor family, which includes the luteinizing hormone (LH) receptor, the follicle-stimulating hormone (FSH) receptor, and the pituitary thyroid-stimulating hormone (TSH) receptor. LGR4-6 are receptors for the R-spondin (Rspo) family of secreted proteins containing two N-terminal furin-like repeats and a thrombospondin domain. The Rspo proteins are involved in regulating proliferation and differentiation of adult stem cells by potently enhancing the WNT-stimulated beta-catenin signaling. LGR6 serves as a marker of multipotent stem cells in the hair follicle that generate all skin cell lineages, whereas LGR5 is a marker for resident stem cell in numerous epithelial cell layers, including small intestine, colon, stomach, and kidney. In addition, LGR4 is broadly expressed in proliferating cells, and its deficient mice display development defects in multiple organs. Members of this group are characterized by a very large extracellular N-terminal domain containing 17 leucine-rich repeats (LRRs), flanked by cysteine-rich N- and C-terminal capping domains, and the extracellular domain is responsible for high-affinity binding with the Rspo proteins.
Pssm-ID: 320485 Cd Length: 274 Bit Score: 520.94 E-value: 2.69e-180
orphan leucine-rich repeat-containing G protein-coupled receptors, member of the class A ...
558-831
4.49e-159
orphan leucine-rich repeat-containing G protein-coupled receptors, member of the class A family of seven-transmembrane G protein-coupled receptors; This group includes leucine-rich repeat-containing G-protein coupled receptor 4 (LGR4), 5 (LGR5), and 6 (LGR6). These receptors contain a subfamily of receptors related to the glycoprotein hormone receptor family, which includes the luteinizing hormone (LH) receptor, the follicle-stimulating hormone (FSH) receptor, and the pituitary thyroid-stimulating hormone (TSH) receptor. LGR4-6 are receptors for the R-spondin (Rspo) family of secreted proteins containing two N-terminal furin-like repeats and a thrombospondin domain. The RSPO proteins are involved in regulating proliferation and differentiation of adult stem cells by potently enhancing the WNT-stimulated beta-catenin signaling. LGR4 is broadly expressed in proliferating cells, and its deficient mice display development defects in multiple organs. LGR5 acts as a marker for resident stem cell in numerous epithelial cell layers, including small intestine, colon, stomach, and kidney. LGR6 also serves as a marker of multipotent stem cells in the hair follicle that generate all skin cell lineages. Members of this group are characterized by a very large extracellular N-terminal domain containing 17 leucine-rich repeats (LRRs), flanked by cysteine-rich N- and C-terminal capping domains, and the extracellular domain is responsible for high-affinity binding with the Rspo proteins.
Pssm-ID: 320266 Cd Length: 274 Bit Score: 466.64 E-value: 4.49e-159
leucine-rich repeats-containing G protein-coupled receptor 6, the class A of 7-transmembrane ...
558-831
4.13e-124
leucine-rich repeats-containing G protein-coupled receptor 6, the class A of 7-transmembrane GPCRs; The leucine-rich repeat containing G-protein coupled receptor LGR5, together with its family members LGR4 and LGR6, is structurally related to the glycoprotein hormone receptor family, which includes the luteinizing hormone (LH) receptor, the follicle-stimulating hormone (FSH) receptor, and the pituitary thyroid-stimulating hormone (TSH) receptor. LGR4-6 are receptors for the R-spondin (Rspo) family of secreted proteins containing two N-terminal furin-like repeats and a thrombospondin domain. The Rspo proteins are involved in regulating proliferation and differentiation of adult stem cells by potently enhancing the WNT-stimulated beta-catenin signaling. LGR5 serves as a marker for resident stem cell in numerous epithelial cell layers, including small intestine, colon, stomach, and kidney. LGR6 is a marker for multipotent stem cells in the hair follicle that generate all skin cell lineages. In addition, LGR4 is broadly expressed in proliferating cells, and its deficient mice display development defects in multiple organs. Members of this group are characterized by a very large extracellular N-terminal domain containing 17 leucine-rich repeats (LRRs), flanked by cysteine-rich N- and C-terminal capping domains, and the extracellular domain is responsible for high-affinity binding with the Rspo proteins.
Pssm-ID: 320484 Cd Length: 276 Bit Score: 376.44 E-value: 4.13e-124
leucine-rich repeats-containing G protein-coupled receptor 4, member of the class A family of ...
558-830
2.43e-89
leucine-rich repeats-containing G protein-coupled receptor 4, member of the class A family of seven-transmembrane G protein-coupled receptors; The leucine-rich repeat containing G-protein coupled receptor Lgr4 (formerly known as Gpr48), together with its close family members LGR5 and LGR6, is structurally related to the glycoprotein hormone receptor family, which includes the luteinizing hormone (LH) receptor, the follicle-stimulating hormone (FSH) receptor, and the pituitary thyroid-stimulating hormone (TSH) receptor. LGR4-6 are receptors for the R-spondin (Rspo) family of secreted proteins containing two N-terminal furin-like repeats and a thrombospondin domain. The Rspo proteins are involved in regulating proliferation and differentiation of adult stem cells by potently enhancing the WNT-stimulated beta-catenin signaling. LGR4 is broadly expressed in proliferating cells, and its deficient mice display development defects in multiple organs. LGR5 acts as a marker for resident stem cell in numerous epithelial cell layers, including small intestine, colon, stomach, and kidney. LGR6 also serves as a marker of multipotent stem cells in the hair follicle that generate all skin cell lineages. Members of this group are characterized by a very large extracellular N-terminal domain containing 17 leucine-rich repeats (LRRs), flanked by cysteine-rich N- and C-terminal capping domains, and the extracellular domain is responsible for high-affinity binding with the Rspo proteins.
Pssm-ID: 320483 Cd Length: 274 Bit Score: 285.22 E-value: 2.43e-89
glycoprotein hormone receptors and leucine-rich repeats containing G protein-coupled receptors, ...
558-831
6.40e-83
glycoprotein hormone receptors and leucine-rich repeats containing G protein-coupled receptors, member of the class A family of seven-transmembrane G protein-coupled receptors; This subfamily includes the glycoprotein hormone receptors (GPHRs), vertebrate receptors containing 17 leucine-rich repeats (LGR4-6), and the relaxin family peptide receptors (also known as LGR7 and LGR8). They are seven transmembrane domain receptors with a very large extracellular N-terminal domain containing many leucine-rich repeats responsible for hormone recognition and binding. The glycoprotein hormone receptor family contains receptors for the pituitary hormones, thyrotropin (thyroid-stimulating hormone receptor), follitropin (follicle-stimulating hormone receptor), and lutropin (luteinizing hormone receptor). Glycoprotein hormone receptors couple primarily to the G(s)-protein and promotes cAMP production, but also to the G(i)- or G(q)-protein. Two orphan GPCRs, LGR7 and LGR8, have been recently identified as receptors for the relaxin peptide hormones.
Pssm-ID: 320111 [Multi-domain] Cd Length: 286 Bit Score: 268.34 E-value: 6.40e-83
glycoprotein hormone receptors, member of the class A family of seven-transmembrane G ...
558-831
1.68e-57
glycoprotein hormone receptors, member of the class A family of seven-transmembrane G protein-coupled receptors; The glycoprotein hormone receptors (GPHRs) are seven transmembrane domain receptors with a very large extracellular N-terminal domain containing many leucine-rich repeats responsible for hormone recognition and binding. The glycoprotein hormone family includes three gonadotropins: luteinizing hormone (LH), follicle-stimulating hormone (FSH), chorionic gonadotropin (CG) and a pituitary thyroid-stimulating hormone (TSH). The glycoprotein hormones exert their biological functions by interacting with their cognate GPCRs. Both LH and CG bind to the same receptor, the luteinizing hormone-choriogonadotropin receptor (LHCGR); FSH binds to FSH-R and TSH to TSH-R. GPHRs couple primarily to the G(s)-protein and promotes cAMP production, but also to the G(i)- or G(q)-protein.
Pssm-ID: 320264 [Multi-domain] Cd Length: 275 Bit Score: 198.59 E-value: 1.68e-57
thyroid-stimulating hormone receptor (or thyrotropin receptor), member of the class A family ...
559-831
8.86e-38
thyroid-stimulating hormone receptor (or thyrotropin receptor), member of the class A family of seven-transmembrane G protein-coupled receptors; The glycoprotein hormone receptors are seven transmembrane domain receptors with a very large extracellular N-terminal domain containing many leucine-rich repeats responsible for hormone recognition and binding. The glycoprotein hormone family includes the three gonadotropins: luteinizing hormone (LH), follicle-stimulating hormone (FSH), chorionic gonadotropin (CG), and a pituitary thyroid-stimulating hormone (TSH). The glycoprotein hormones exert their biological functions by interacting with their cognate GPCRs. Both LH and CG bind to the same receptor, the luteinizing hormone-choriogonadotropin receptor (LHCGR); FSH binds to FSH-R and TSH to TSH-R. TSH-R plays an important role thyroid physiology, and its activation stimulates the production of thyroxine (T4) and triiodothyronine (T3). Defects in TSH-R are a cause of several types of hyperthyroidism. The receptor is predominantly found on the surface of the thyroid epithelial cells and couples to the G(s)-protein and activates adenylate cyclase, thereby promoting cAMP production. TSH and cAMP stimulate thyroid cell proliferation, differentiation, and function.
Pssm-ID: 320630 [Multi-domain] Cd Length: 275 Bit Score: 142.74 E-value: 8.86e-38
follicle-stimulating hormone receptor, member of the class A family of seven-transmembrane G ...
559-831
4.37e-37
follicle-stimulating hormone receptor, member of the class A family of seven-transmembrane G protein-coupled receptors; The glycoprotein hormone receptors are seven transmembrane domain receptors with a very large extracellular N-terminal domain containing many leucine-rich repeats responsible for hormone recognition and binding. The glycoprotein hormone family includes the three gonadotropins: luteinizing hormone (LH), follicle-stimulating hormone (FSH), chorionic gonadotropin (CG), and a pituitary thyroid-stimulating hormone (TSH). The glycoprotein hormones exert their biological functions by interacting with their cognate GPCRs. Both LH and CG bind to the same receptor, the luteinizing hormone-choriogonadotropin receptor (LHCGR); FSH binds to FSH-R and TSH to TSH-R. FSH-R functions in gonad development and is found in the ovary, testis, and uterus. Defects in this receptor cause ovarian dysgenesis type 1, and also ovarian hyperstimulation syndrome. The FSH-R activation couples to the G(s)-protein and stimulates adenylate cyclase, thereby promoting cAMP production.
Pssm-ID: 320482 Cd Length: 275 Bit Score: 140.76 E-value: 4.37e-37
relaxin family peptide receptors, member of the class A family of seven-transmembrane G ...
559-829
2.76e-36
relaxin family peptide receptors, member of the class A family of seven-transmembrane G protein-coupled receptors; This group includes relaxin/insulin-like family peptide receptor 1 (RXFP1 or LGR7) and 2 (RXFP2 or LGR8), which contain a very large extracellular N-terminal domain with numerous leucine-rich repeats responsible for hormone recognition and binding. Relaxin is a member of the insulin superfamily that has diverse actions in both reproductive and non-reproductive tissues. The relaxin-like peptide family includes relaxin-1, relaxin-2, and the insulin-like (INSL) peptides such as INSL3, INSL4, INSL5 and INSL6. The relaxin family peptides share high structural but low sequence similarity, and exert their physiological functions by activating a group of four GPCRs, RXFP1-4. Relaxin and INSL3 are the endogenous ligands for RXFP1 and RXFP2, respectively. Upon receptor binding, relaxin activates a variety of signaling pathways to produce second messengers such as cAMP.
Pssm-ID: 320265 [Multi-domain] Cd Length: 284 Bit Score: 138.87 E-value: 2.76e-36
luteinizing hormone-choriogonadotropin receptor, member of the class A family of ...
559-831
5.50e-35
luteinizing hormone-choriogonadotropin receptor, member of the class A family of seven-transmembrane G protein-coupled receptors; The glycoprotein hormone receptors are seven transmembrane domain receptors with a very large extracellular N-terminal domain containing many leucine-rich repeats responsible for hormone recognition and binding. The glycoprotein hormone family includes the three gonadotropins: luteinizing hormone (LH), follicle-stimulating hormone (FSH), chorionic gonadotropin (CG), and a pituitary thyroid-stimulating hormone (TSH). The glycoprotein hormones exert their biological functions by interacting with their cognate GPCRs. Both LH and CG bind to the same receptor, the luteinizing hormone-choriogonadotropin receptor (LHCGR); FSH binds to FSH-R and TSH to TSH-R. LHCGR is expressed predominantly in the ovary and testis, and plays an essential role in sexual development and reproductive processes. LHCGR couples primarily to the G(s)-protein and activates adenylate cyclase, thereby promoting cAMP production.
Pssm-ID: 320481 [Multi-domain] Cd Length: 275 Bit Score: 134.61 E-value: 5.50e-35
rhodopsin receptor-like class A family of the seven-transmembrane G protein-coupled receptor ...
567-824
1.55e-23
rhodopsin receptor-like class A family of the seven-transmembrane G protein-coupled receptor superfamily; Class A rhodopsin-like receptors constitute about 90% of all GPCRs. The class A GPCRs include the light-sensitive rhodopsin as well as receptors for biogenic amines, lipids, nucleotides, odorants, peptide hormones, and a variety of other ligands. All GPCRs have a common structural architecture comprising of seven-transmembrane (TM) alpha-helices interconnected by three extracellular and three intracellular loops. A general feature of GPCR signaling is agonist-induced conformational changes in the receptors, leading to activation of the heterotrimeric G proteins, which consist of the guanine nucleotide-binding G-alpha subunit and the dimeric G-beta-gamma subunits. The activated G proteins then bind to and activate numerous downstream effector proteins, which generate second messengers that mediate a broad range of cellular and physiological processes. Based on sequence similarity, GPCRs can be divided into six major classes: class A (rhodopsin-like family), class B (Methuselah-like, adhesion and secretin-like receptor family), class C (metabotropic glutamate receptor family), class D (fungal mating pheromone receptors), class E (cAMP receptor family), and class F (frizzled/smoothened receptor family). Nearly 800 human GPCR genes have been identified and are involved essentially in all major physiological processes. Approximately 40% of clinically marketed drugs mediate their effects through modulation of GPCR function for the treatment of a variety of human diseases including bacterial infections.
Pssm-ID: 410626 [Multi-domain] Cd Length: 275 Bit Score: 101.21 E-value: 1.55e-23
relaxin receptor 2 (or LGR8), member of the class A family of seven-transmembrane G ...
559-831
8.85e-18
relaxin receptor 2 (or LGR8), member of the class A family of seven-transmembrane G protein-coupled receptors; Relaxin is a member of the insulin superfamily that has diverse actions in both reproductive and non-reproductive tissues. The relaxin-like peptide family includes relaxin-1, relaxin-2, and the insulin-like (INSL) peptides such as INSL3, INSL4, INSL5 and INSL6. The relaxin family peptides share high structural similarity, but low sequence similarity, and exert their physiological functions by activating a group of four G protein-coupled receptors, RXFP1-4. INSL3 is the endogenous ligand for RXFP2, which couples to the G(s) protein to increase intracellular cAMP levels, but also to the GoB protein to decrease cAMP formation. RXFP2 (or LGR8) is expressed in various tissues including the brain, kidney, muscle, testis, thyroid, uterus, and peripheral blood cells, among others.
Pssm-ID: 320632 Cd Length: 287 Bit Score: 84.84 E-value: 8.85e-18
relaxin receptor 1 (or LGR7), member of the class A family of seven-transmembrane G ...
559-829
5.14e-16
relaxin receptor 1 (or LGR7), member of the class A family of seven-transmembrane G protein-coupled receptors; Relaxin is a member of the insulin superfamily that has diverse actions in both reproductive and non-reproductive tissues. The relaxin-like peptide family includes relaxin-1, relaxin-2, and the insulin-like (INSL) peptides such as INSL3, INSL4, INSL5 and INSL6. The relaxin family peptides share high structural but low sequence similarity, and exert their physiological functions by activating a group of four G protein-coupled receptors, RXFP1-4. Relaxin is the endogenous ligand for RXFP1, which has a large extracellular N-terminal domain containing 10 leucine-rich repeats and a unique low-density lipoprotein type A (LDLa) module which is necessary for receptor activation. Upon receptor binding, relaxin activates a variety of signaling pathways to produce second messengers such as cAMP and nitric oxide. RXFP1 is expressed in various tissues including uterus, ovary, placenta, cerebral cortex, heart, lung and kidney, among others.
Pssm-ID: 320631 [Multi-domain] Cd Length: 287 Bit Score: 79.53 E-value: 5.14e-16
protein phosphatase 1 regulatory subunit 42; Protein phosphatase 1 regulatory subunit 42 ...
161-386
4.82e-14
protein phosphatase 1 regulatory subunit 42; Protein phosphatase 1 regulatory subunit 42 (PPP1R42), also known as leucine-rich repeat-containing protein 67 (lrrc67) or testis leucine-rich repeat (TLRR) protein, plays a role in centrosome separation. PPP1R42 has been shown to interact with the well-conserved signaling protein phosphatase-1 (PP1) and thereby increasing PP1's activity, which counters centrosome separation. Inhibition of PPP1R42 expression increases the number of centrosomes per cell while its depletion reduces the activity of PP1 leading to activation of NEK2, the kinase responsible for phosphorylation of centrosomal linker proteins promoting centrosome separation.
Pssm-ID: 411060 [Multi-domain] Cd Length: 220 Bit Score: 72.13 E-value: 4.82e-14
protein phosphatase 1 regulatory subunit 42; Protein phosphatase 1 regulatory subunit 42 ...
73-267
2.48e-13
protein phosphatase 1 regulatory subunit 42; Protein phosphatase 1 regulatory subunit 42 (PPP1R42), also known as leucine-rich repeat-containing protein 67 (lrrc67) or testis leucine-rich repeat (TLRR) protein, plays a role in centrosome separation. PPP1R42 has been shown to interact with the well-conserved signaling protein phosphatase-1 (PP1) and thereby increasing PP1's activity, which counters centrosome separation. Inhibition of PPP1R42 expression increases the number of centrosomes per cell while its depletion reduces the activity of PP1 leading to activation of NEK2, the kinase responsible for phosphorylation of centrosomal linker proteins promoting centrosome separation.
Pssm-ID: 411060 [Multi-domain] Cd Length: 220 Bit Score: 70.20 E-value: 2.48e-13
type 2 opsins in animals, member of the class A family of seven-transmembrane G ...
566-829
6.08e-13
type 2 opsins in animals, member of the class A family of seven-transmembrane G protein-coupled receptors; This rhodopsin family represents the type 2 opsins found in vertebrates and invertebrates except sponge. Type 2 opsins primarily function as G protein coupled receptors and are responsible for vision as well as for circadian rhythm and pigment regulation. On the contrary, type 1 opsins such as bacteriorhodopsin and proteorhodopsin are found in both prokaryotic and eukaryotic microbes, functioning as light-gated ion channels, proton pumps, sensory receptors and in other unknown functions. Although these two opsin types share seven-transmembrane domain topology and a conserved lysine reside in the seventh helix, type 1 opsins do not activate G-proteins and are not evolutionarily related to type 2. Type 2 opsins can be classified into six distinct subfamilies including the vertebrate opsins/encephalopsins, the G(o) opsins, the G(s) opsins, the invertebrate G(q) opsins, the photoisomerases, and the neuropsins.
Pssm-ID: 381741 [Multi-domain] Cd Length: 284 Bit Score: 70.31 E-value: 6.08e-13
retinal pigment epithelium-derived rhodopsin homolog, member of the class A family of ...
566-828
7.23e-13
retinal pigment epithelium-derived rhodopsin homolog, member of the class A family of seven-transmembrane G protein-coupled receptors; Peropsin, also known as a retinal pigment epithelium-derived rhodopsin homolog (RRH), is a visual pigment-like protein found exclusively in the apical microvilli of the retinal pigment epithelium. Peropsin belongs to the type 2 opsin family of the class A G-protein coupled receptors. Peropsin presumably plays a physiological role in the retinal pigment epithelium either by detecting light directly or monitoring the levels of retinoids, the primary light absorber in visual perception, or other pigment-related compounds in the eye.
Pssm-ID: 320201 [Multi-domain] Cd Length: 280 Bit Score: 70.15 E-value: 7.23e-13
7 transmembrane receptor (rhodopsin family); This family contains, amongst other ...
575-820
1.20e-10
7 transmembrane receptor (rhodopsin family); This family contains, amongst other G-protein-coupled receptors (GCPRs), members of the opsin family, which have been considered to be typical members of the rhodopsin superfamily. They share several motifs, mainly the seven transmembrane helices, GCPRs of the rhodopsin superfamily. All opsins bind a chromophore, such as 11-cis-retinal. The function of most opsins other than the photoisomerases is split into two steps: light absorption and G-protein activation. Photoisomerases, on the other hand, are not coupled to G-proteins - they are thought to generate and supply the chromophore that is used by visual opsins.
Pssm-ID: 459624 [Multi-domain] Cd Length: 256 Bit Score: 63.09 E-value: 1.20e-10
amine receptors and similar proteins, member of the class A family of seven-transmembrane G ...
564-829
2.53e-10
amine receptors and similar proteins, member of the class A family of seven-transmembrane G protein-coupled receptors; Amine receptors of the class A family of GPCRs include adrenoceptors, 5-HT (serotonin) receptors, muscarinic cholinergic receptors, dopamine receptors, histamine receptors, and trace amine receptors. The receptors of amine subfamily are major therapeutic targets for the treatment of neurological disorders and psychiatric diseases. All GPCRs have a common structural architecture comprising of seven-transmembrane (TM) alpha-helices interconnected by three extracellular and three intracellular loops. A general feature of GPCR signaling is agonist-induced conformational changes in the receptors, leading to activation of the heterotrimeric G proteins, which consist of the guanine nucleotide-binding G-alpha subunit and the dimeric G-beta-gamma subunits. The activated G proteins then bind to and activate numerous downstream effector proteins, which generate second messengers that mediate a broad range of cellular and physiological processes.
Pssm-ID: 320098 [Multi-domain] Cd Length: 259 Bit Score: 61.81 E-value: 2.53e-10
Leucine-rich repeats (LRRs), ribonuclease inhibitor (RI)-like subfamily. LRRs are 20-29 residue sequence motifs present in many proteins that participate in protein-protein interactions and have different functions and cellular locations. LRRs correspond to structural units consisting of a beta strand (LxxLxLxxN/CxL conserved pattern) and an alpha helix. This alignment contains 12 strands corresponding to 11 full repeats, consistent with the extent observed in the subfamily acting as Ran GTPase Activating Proteins (RanGAP1).
Pssm-ID: 238064 [Multi-domain] Cd Length: 319 Bit Score: 59.68 E-value: 2.73e-09
neuropsin (Opsin-5), member of the class A family of seven-transmembrane G protein-coupled ...
567-831
5.54e-08
neuropsin (Opsin-5), member of the class A family of seven-transmembrane G protein-coupled receptors; Neuropsin, also known as Opsin-5, is a photoreceptor protein expressed in the retina, brain, testes, and spinal cord. Neuropsin belongs to the type 2 opsin family of the class A G-protein coupled receptors. Mammalian neuropsin activates Gi protein-mediated photo-transduction pathway in a UV-dependent manner, whereas, in non-mammalian vertebrates, neuropsin is involved in regulating the photoperiodic control of seasonal reproduction in birds such as quail. As with other opsins, it may also act as a retinal photoisomerase.
Pssm-ID: 320202 [Multi-domain] Cd Length: 284 Bit Score: 55.36 E-value: 5.54e-08
retinal G protein coupled receptor, member of the class A family of seven-transmembrane G ...
568-828
9.23e-08
retinal G protein coupled receptor, member of the class A family of seven-transmembrane G protein-coupled receptors; This group represents the retinal G-protein coupled receptor (RGR) found exclusively in retinal pigment epithelium (RPE) and Muller cells. RGR is a member of the class A rhodopsin-like receptor family. As with other opsins, RGR binds all-trans retinal and contains a conserved lysine reside on the seventh helix. RGR functions as a photoisomerase to catalyze the conversion of all-trans-retinal to 11-cis-retinal. Two mutations in RGR gene are found in patients with retinitis pigmentosa, indicating that RGR is essential to the visual process.
Pssm-ID: 320200 [Multi-domain] Cd Length: 260 Bit Score: 54.29 E-value: 9.23e-08
melatonin receptor subtype 1C, member of the class A family of seven-transmembrane G ...
564-830
3.10e-06
melatonin receptor subtype 1C, member of the class A family of seven-transmembrane G protein-coupled receptors; Melatonin (N-acetyl-5-methoxytryptamine) is a naturally occurring sleep-promoting chemical found in vertebrates, invertebrates, bacteria, fungi, and plants. In mammals, melatonin is secreted by the pineal gland and is involved in regulation of circadian rhythms. Its production peaks during the nighttime, and is suppressed by light. Melatonin is shown to be synthesized in other organs and cells of many vertebrates, including the Harderian gland, leukocytes, skin, and the gastrointestinal (GI) tract, which contains several hundred times more melatonin than the pineal gland and is involved in the regulation of GI motility, inflammation, and sensation. Melatonin exerts its pleiotropic physiological effects through specific membrane receptors, named MT1A, MT1B, and MT1C, which belong to the class A rhodopsin-like G-protein coupled receptor family. MT1A and MT1B subtypes are present in mammals, whereas MT1C subtype has been found in amphibians and birds. The melatonin receptors couple to G proteins of the G(i/o) class, leading to the inhibition of adenylate cyclase.
Pssm-ID: 320523 [Multi-domain] Cd Length: 279 Bit Score: 49.91 E-value: 3.10e-06
BspA type Leucine rich repeat region (6 copies); This family includes a number of leucine rich ...
201-323
5.51e-06
BspA type Leucine rich repeat region (6 copies); This family includes a number of leucine rich repeats. This family contains a large number of BSPA-like surface antigens from Trichomonas vaginalis.
Pssm-ID: 463839 [Multi-domain] Cd Length: 127 Bit Score: 46.38 E-value: 5.51e-06
Leucine-rich repeats (LRRs), ribonuclease inhibitor (RI)-like subfamily. LRRs are 20-29 residue sequence motifs present in many proteins that participate in protein-protein interactions and have different functions and cellular locations. LRRs correspond to structural units consisting of a beta strand (LxxLxLxxN/CxL conserved pattern) and an alpha helix. This alignment contains 12 strands corresponding to 11 full repeats, consistent with the extent observed in the subfamily acting as Ran GTPase Activating Proteins (RanGAP1).
Pssm-ID: 238064 [Multi-domain] Cd Length: 319 Bit Score: 49.28 E-value: 5.53e-06
BspA type Leucine rich repeat region (6 copies); This family includes a number of leucine rich ...
139-284
3.13e-05
BspA type Leucine rich repeat region (6 copies); This family includes a number of leucine rich repeats. This family contains a large number of BSPA-like surface antigens from Trichomonas vaginalis.
Pssm-ID: 463839 [Multi-domain] Cd Length: 127 Bit Score: 44.46 E-value: 3.13e-05
endothelial differentiation gene family, member of the class A family of seven-transmembrane G ...
560-748
5.10e-05
endothelial differentiation gene family, member of the class A family of seven-transmembrane G protein-coupled receptors; This group represents the endothelial differentiation gene (Edg) family of G-protein coupled receptors, melanocortin/ACTH receptors, and cannabinoid receptors as well as their closely related receptors. The Edg GPCRs bind blood borne lysophospholipids including sphingosine-1-phosphate (S1P) and lysophosphatidic acid (LPA), which are involved in the regulation of cell proliferation, survival, migration, invasion, endothelial cell shape change and cytoskeletal remodeling. The Edg receptors are classified into two subfamilies: the lysophosphatidic acid subfamily that includes LPA1 (Edg2), LPA2 (Edg4), and LPA3 (Edg7); and the S1P subfamily that includes S1P1 (Edg1), S1P2 (Edg5), S1P3 (Edg3), S1P4 (Edg6), and S1P5 (Edg8). Melanocortin receptors bind a group of pituitary peptide hormones known as melanocortins, which include adrenocorticotropic hormone (ACTH) and the different isoforms of melanocyte-stimulating hormones. Two types of cannabinoid receptors, CB1 and CB2, are activated by naturally occurring endocannabinoids, cannabis plant-derived cannabinoids such as tetrahydrocannabinol, or synthetic cannabinoids. The CB receptors are involved in the various physiological processes such as appetite, mood, memory, and pain sensation. CB1 receptor is expressed predominantly in central and peripheral neurons, while CB2 receptor is found mainly in the immune system.
Pssm-ID: 341317 [Multi-domain] Cd Length: 275 Bit Score: 46.13 E-value: 5.10e-05
Leucine Rich repeats (2 copies); Leucine rich repeats are short sequence motifs present in a ...
352-384
1.03e-04
Leucine Rich repeats (2 copies); Leucine rich repeats are short sequence motifs present in a number of proteins with diverse functions and cellular locations. These repeats are usually involved in protein-protein interactions. Each Leucine Rich Repeat is composed of a beta-alpha unit. These units form elongated non-globular structures. Leucine Rich Repeats are often flanked by cysteine rich domains.
Pssm-ID: 463713 [Multi-domain] Cd Length: 44 Bit Score: 40.31 E-value: 1.03e-04
BspA type Leucine rich repeat region (6 copies); This family includes a number of leucine rich ...
100-212
1.81e-04
BspA type Leucine rich repeat region (6 copies); This family includes a number of leucine rich repeats. This family contains a large number of BSPA-like surface antigens from Trichomonas vaginalis.
Pssm-ID: 463839 [Multi-domain] Cd Length: 127 Bit Score: 42.15 E-value: 1.81e-04
vertebrate gonadotropin-releasing hormone receptors, member of the class A family of ...
560-831
2.04e-04
vertebrate gonadotropin-releasing hormone receptors, member of the class A family of seven-transmembrane G protein-coupled receptors; GnRHR, also known as luteinizing hormone releasing hormone receptor (LHRHR), plays an central role in vertebrate reproductive function; its activation by binding to GnRH leads to the release of follicle stimulating hormone (FSH) and luteinizing hormone (LH) from the pituitary gland. GnRHR is expressed predominantly in the gonadotrope membrane of the anterior pituitary as well as found in numerous extrapituitary tissues including lymphocytes, breast, ovary, prostate, and cancer cell lines. There are at least two types of GnRH receptors, GnRHR1 and GnRHR2, which couple primarily to G proteins of the Gq/11 family. GnRHR is closely related to the adipokinetic hormone receptor (AKH), which binds to a lipid-mobilizing hormone that is involved in control of insect metabolism. They share a common ancestor and are members of the class A of the seven-transmembrane, G-protein coupled receptor (GPCR) superfamily.
Pssm-ID: 320505 [Multi-domain] Cd Length: 295 Bit Score: 44.28 E-value: 2.04e-04
urotensin-II receptor, member of the class A family of seven-transmembrane G protein-coupled ...
630-831
2.38e-04
urotensin-II receptor, member of the class A family of seven-transmembrane G protein-coupled receptors; The urotensin-II receptor (UII-R, also known as the hypocretin receptor) is a member of the class A rhodopsin-like G-protein coupled receptors, which binds the peptide hormone urotensin-II. Urotensin II (UII) is a vasoactive somatostatin-like or cortistatin-like peptide hormone. However, despite the apparent structural similarity to these peptide hormones, they are not homologous to UII. Urotensin II was first identified in fish spinal cord, but later found in humans and other mammals. In fish, UII is secreted at the back part of the spinal cord, in a neurosecretory centre called uroneurapophysa, and is involved in the regulation of the renal and cardiovascular systems. In mammals, urotensin II is the most potent mammalian vasoconstrictor identified to date and causes contraction of arterial blood vessels, including the thoracic aorta. The urotensin II receptor is a rhodopsin-like G-protein coupled receptor, which binds urotensin-II. The receptor was previously known as GPR14, or sensory epithelial neuropeptide-like receptor (SENR). The UII receptor is expressed in the CNS (cerebellum and spinal cord), skeletal muscle, pancreas, heart, endothelium and vascular smooth muscle. It is involved in the pathophysiological control of cardiovascular function and may also influence CNS and endocrine functions. Binding of urotensin II to the receptor leads to activation of phospholipase C, through coupling to G(q/11) family proteins. The resulting increase in intracellular calcium may cause the contraction of vascular smooth muscle.
Pssm-ID: 320130 [Multi-domain] Cd Length: 282 Bit Score: 43.97 E-value: 2.38e-04
non-visual parietopsins, member of the class A family of seven-transmembrane G protein-coupled ...
568-829
2.89e-04
non-visual parietopsins, member of the class A family of seven-transmembrane G protein-coupled receptors; Parietopsin is a non-visual green light-sensitive opsin that was initially identified in the parietal eye of lizards. The vertebrate non-visual opsin family includes pinopsins, parapinopsin, VA (vertebrate ancient) opsins, and parietopsins. These non-visual opsins are expressed in various extra-retinal tissues and/or in non-rod, non-cone retinal cells. They are thought to be involved in light-dependent physiological functions such as photo-entrainment of circadian rhythm, photoperiodicity and body color change. Parietopsin belongs to the class A of the G protein-coupled receptors and shows strong homology to the vertebrate visual opsins.
Pssm-ID: 320213 [Multi-domain] Cd Length: 280 Bit Score: 43.69 E-value: 2.89e-04
Leucine-rich repeats (LRRs), ribonuclease inhibitor (RI)-like subfamily. LRRs are 20-29 residue sequence motifs present in many proteins that participate in protein-protein interactions and have different functions and cellular locations. LRRs correspond to structural units consisting of a beta strand (LxxLxLxxN/CxL conserved pattern) and an alpha helix. This alignment contains 12 strands corresponding to 11 full repeats, consistent with the extent observed in the subfamily acting as Ran GTPase Activating Proteins (RanGAP1).
Pssm-ID: 238064 [Multi-domain] Cd Length: 319 Bit Score: 43.88 E-value: 3.04e-04
Leucine rich repeat N-terminal domain; Leucine Rich Repeats pfam00560 are short sequence ...
33-65
5.73e-04
Leucine rich repeat N-terminal domain; Leucine Rich Repeats pfam00560 are short sequence motifs present in a number of proteins with diverse functions and cellular locations. Leucine Rich Repeats are often flanked by cysteine rich domains. This domain is often found at the N-terminus of tandem leucine rich repeats.
Pssm-ID: 396168 [Multi-domain] Cd Length: 28 Bit Score: 37.99 E-value: 5.73e-04
Leucine Rich repeats (2 copies); Leucine rich repeats are short sequence motifs present in a ...
211-261
6.57e-04
Leucine Rich repeats (2 copies); Leucine rich repeats are short sequence motifs present in a number of proteins with diverse functions and cellular locations. These repeats are usually involved in protein-protein interactions. Each Leucine Rich Repeat is composed of a beta-alpha unit. These units form elongated non-globular structures. Leucine Rich Repeats are often flanked by cysteine rich domains.
Pssm-ID: 463713 [Multi-domain] Cd Length: 44 Bit Score: 38.00 E-value: 6.57e-04
non-visual parapinopsin, member of the class A family of seven-transmembrane G protein-coupled ...
566-829
1.22e-03
non-visual parapinopsin, member of the class A family of seven-transmembrane G protein-coupled receptors; This group includes the non-visual pineal pigment, parapinopsin, which is a member of the class A of the seven transmembrane G protein-coupled receptors. Parapinopsin serves as a UV-sensitive pigment for the wavelength discrimination in the pineal-related organs of lower vertebrates such as reptiles, amphibians, and fish. Although parapinopsin is phylogenetically related to vertebrate visual pigments such as rhodopsin, which releases its retinal chromophore and bleaches, the parapinopsin photoproduct is stable and does not bleach. The vertebrate non-visual opsin family includes pinopsins, parapinopsin, VA (vertebrate ancient) opsins, and parietopsins. These non-visual opsins are expressed in various extra-retinal tissues and/or in non-rod, non-cone retinal cells.
Pssm-ID: 320203 [Multi-domain] Cd Length: 279 Bit Score: 41.69 E-value: 1.22e-03
super conserved receptor expressed in brain and related proteins, member of the class A family ...
619-749
1.47e-03
super conserved receptor expressed in brain and related proteins, member of the class A family of seven-transmembrane G protein-coupled receptors; The SREB (super conserved receptor expressed in brain) subfamily consists of at least three members, named SREB1 (GPR27), SREB2 (GPR85), and SREB3 (GPR173). They are very highly conserved G protein-coupled receptors throughout vertebrate evolution, however no endogenous ligands have yet been identified. SREB2 is greatly expressed in brain regions involved in psychiatric disorders and cognition, such as the hippocampal dentate gyrus. Genetic studies in both humans and mice have shown that SREB2 influences brain size and negatively regulates hippocampal adult neurogenesis and neurogenesis-dependent cognitive function, all of which are suggesting a potential link between SREB2 and schizophrenia. All three SREB genes are highly expressed in differentiated hippocampal neural stem cells. Furthermore, all GPCRs have a common structural architecture comprising of seven-transmembrane (TM) alpha-helices interconnected by three extracellular and three intracellular loops. A general feature of GPCR signaling is agonist-induced conformational changes in the receptors, leading to activation of the heterotrimeric G proteins, which consist of the guanine nucleotide-binding G-alpha subunit and the dimeric G-beta-gamma subunits. The activated G proteins then bind to and activate numerous downstream effector proteins, which generate second messengers that mediate a broad range of cellular and physiological processes.
Pssm-ID: 320134 [Multi-domain] Cd Length: 329 Bit Score: 41.67 E-value: 1.47e-03
Leucine-rich repeats (LRRs), ribonuclease inhibitor (RI)-like subfamily. LRRs are 20-29 residue sequence motifs present in many proteins that participate in protein-protein interactions and have different functions and cellular locations. LRRs correspond to structural units consisting of a beta strand (LxxLxLxxN/CxL conserved pattern) and an alpha helix. This alignment contains 12 strands corresponding to 11 full repeats, consistent with the extent observed in the subfamily acting as Ran GTPase Activating Proteins (RanGAP1).
Pssm-ID: 238064 [Multi-domain] Cd Length: 319 Bit Score: 41.57 E-value: 1.70e-03
FMRFamide (Phe-Met-Arg-Phe) receptors and related proteins, member of the class A family of ...
558-827
1.76e-03
FMRFamide (Phe-Met-Arg-Phe) receptors and related proteins, member of the class A family of seven-transmembrane G protein-coupled receptors; This group includes Drosophila melanogaster G-protein coupled FMRFamide (Phe-Met-Arg-Phe-NH2) receptor DrmFMRFa-R and related invertebrate receptors, as well as the vertebrate proteins GPR139 and GPR142. DrmFMRFa-R binds with high affinity to FMRFamide and intrinsic FMRFamide-related peptides. FMRFamide is a neuropeptide from the family of FMRFamide-related peptides (FaRPs), which all containing a C-terminal RFamide (Arg-Phe-NH2) motif and have diverse functions in the central and peripheral nervous systems. FMRFamide is an important neuropeptide in many types of invertebrates such as insects, nematodes, molluscs, and worms. In invertebrates, the FMRFamide-related peptides are involved in the regulation of heart rate, blood pressure, gut motility, feeding behavior, and reproduction. On the other hand, in vertebrates such as mice, they play a role in the modulation of morphine-induced antinociception. Orphan receptors GPR139 and GPR142 are very closely related G protein-coupled receptors, but they have different expression patterns in the brain and in other tissues. These receptors couple to inhibitory G proteins and activate phospholipase C. Studies suggested that dimer formation may be required for their proper function. GPR142 is predominantly expressed in pancreatic beta-cells and mediates enhancement of glucose-stimulated insulin secretion, whereas GPR139 is mostly expressed in the brain and is suggested to play a role in the control of locomotor activity. Tryptophan and phenylalanine have been identified as putative endogenous ligands of GPR139.
Pssm-ID: 410630 [Multi-domain] Cd Length: 299 Bit Score: 41.46 E-value: 1.76e-03
melatonin receptor subtype 1B, member of the class A family of seven-transmembrane G ...
627-830
1.98e-03
melatonin receptor subtype 1B, member of the class A family of seven-transmembrane G protein-coupled receptors; Melatonin (N-acetyl-5-methoxytryptamine) is a naturally occurring sleep-promoting chemical found in vertebrates, invertebrates, bacteria, fungi, and plants. In mammals, melatonin is secreted by the pineal gland and is involved in regulation of circadian rhythms. Its production peaks during the nighttime, and is suppressed by light. Melatonin is shown to be synthesized in other organs and cells of many vertebrates, including the Harderian gland, leukocytes, skin, and the gastrointestinal (GI) tract, which contains several hundred times more melatonin than the pineal gland and is involved in the regulation of GI motility, inflammation, and sensation. Melatonin exerts its pleiotropic physiological effects through specific membrane receptors, named MT1A, MT1B, and MT1C, which belong to the class A rhodopsin-like G-protein coupled receptor family. MT1A and MT1B subtypes are present in mammals, whereas MT1C subtype has been found in amphibians and birds. The melatonin receptors couple to G proteins of the G(i/o) class, leading to the inhibition of adenylate cyclase.
Pssm-ID: 320522 [Multi-domain] Cd Length: 279 Bit Score: 40.99 E-value: 1.98e-03
melatonin receptor subtype 1A, member of the class A family of seven-transmembrane G ...
564-830
2.42e-03
melatonin receptor subtype 1A, member of the class A family of seven-transmembrane G protein-coupled receptors; Melatonin (N-acetyl-5-methoxytryptamine) is a naturally occurring sleep-promoting chemical found in vertebrates, invertebrates, bacteria, fungi, and plants. In mammals, melatonin is secreted by the pineal gland and is involved in regulation of circadian rhythms. Its production peaks during the nighttime, and is suppressed by light. Melatonin is shown to be synthesized in other organs and cells of many vertebrates, including the Harderian gland, leukocytes, skin, and the gastrointestinal (GI) tract, which contains several hundred times more melatonin than the pineal gland and is involved in the regulation of GI motility, inflammation, and sensation. Melatonin exerts its pleiotropic physiological effects through specific membrane receptors, named MT1A, MT1B, and MT1C, which belong to the class A rhodopsin-like G-protein coupled receptor family. MT1A and MT1B subtypes are present in mammals, whereas MT1C subtype has been found in amphibians and birds. The melatonin receptors couple to G proteins of the G(i/o) class, leading to the inhibition of adenylate cyclase.
Pssm-ID: 320524 [Multi-domain] Cd Length: 279 Bit Score: 41.04 E-value: 2.42e-03
vasopressin receptors and its related G protein-coupled receptors, member of the class A ...
562-831
3.25e-03
vasopressin receptors and its related G protein-coupled receptors, member of the class A family of seven-transmembrane G protein-coupled receptors; Members of this group form a subfamily within the class A G-protein coupled receptors (GPCRs), which includes the vasopressin and oxytocin receptors, the gonadotropin-releasing hormone receptors (GnRHRs), the neuropeptide S receptor (NPSR), and orphan GPR150. These receptors share significant sequence homology with each other, suggesting that they have a common evolutionary origin. Vasopressin, also known as arginine vasopressin or anti-diuretic hormone, is a neuropeptide synthesized in the hypothalamus. The actions of vasopressin are mediated by the interaction of this hormone with three tissue-specific subtypes: V1AR, V1BR, and V2R. Although vasopressin differs from oxytocin by only two amino acids, they have divergent physiological functions. Vasopressin is involved in regulating osmotic and cardiovascular homeostasis, whereas oxytocin plays an important role in the uterus during childbirth and in lactation. GnRHR, also known as luteinizing hormone releasing hormone receptor (LHRHR), plays an central role in vertebrate reproductive function; its activation by binding to GnRH leads to the release of follicle stimulating hormone (FSH) and luteinizing hormone (LH) from the pituitary gland. Neuropeptide S (NPS) promotes arousal and anxiolytic-like effects by activating its cognate receptor NPSR. NPSR has also been associated with asthma and allergy. GPR150 is an orphan receptor closely related to the oxytocin and vasopressin receptors.
Pssm-ID: 320117 [Multi-domain] Cd Length: 295 Bit Score: 40.44 E-value: 3.25e-03
melanin concentrating hormone receptor, member of the class A family of seven-transmembrane G ...
566-831
3.87e-03
melanin concentrating hormone receptor, member of the class A family of seven-transmembrane G protein-coupled receptors; Melanin-concentrating hormone receptor (MCHR) binds melanin concentrating hormone and is presumably involved in the neuronal regulation of food intake and energy homeostasis. Despite strong homology with somatostatin receptors, MCHR does not appear to bind somatostatin. Two MCHRs have been characterized in vertebrates, MCHR1 and MCHR2. MCHR1 is expressed in all mammals, whereas MCHR2 is only expressed in the higher order mammals, such as humans, primates, and dogs, and is not found in rodents. All GPCRs have a common structural architecture comprising of seven-transmembrane (TM) alpha-helices interconnected by three extracellular and three intracellular loops. A general feature of GPCR signaling is agonist-induced conformational changes in the receptors, leading to activation of the heterotrimeric G proteins, which consist of the guanine nucleotide-binding G-alpha subunit and the dimeric G-beta-gamma subunits. The activated G proteins then bind to and activate numerous downstream effector proteins, which generate second messengers that mediate a broad range of cellular and physiological processes.
Pssm-ID: 320216 [Multi-domain] Cd Length: 278 Bit Score: 40.13 E-value: 3.87e-03
Leucine-rich repeats (LRRs), ribonuclease inhibitor (RI)-like subfamily. LRRs are 20-29 residue sequence motifs present in many proteins that participate in protein-protein interactions and have different functions and cellular locations. LRRs correspond to structural units consisting of a beta strand (LxxLxLxxN/CxL conserved pattern) and an alpha helix. This alignment contains 12 strands corresponding to 11 full repeats, consistent with the extent observed in the subfamily acting as Ran GTPase Activating Proteins (RanGAP1).
Pssm-ID: 238064 [Multi-domain] Cd Length: 319 Bit Score: 39.26 E-value: 9.06e-03
Database: CDSEARCH/cdd Low complexity filter: no Composition Based Adjustment: yes E-value threshold: 0.01
References:
Wang J et al. (2023), "The conserved domain database in 2023", Nucleic Acids Res.51(D)384-8.
Lu S et al. (2020), "The conserved domain database in 2020", Nucleic Acids Res.48(D)265-8.
Marchler-Bauer A et al. (2017), "CDD/SPARCLE: functional classification of proteins via subfamily domain architectures.", Nucleic Acids Res.45(D)200-3.
of the residues that compose this conserved feature have been mapped to the query sequence.
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(labeled illustration) Standard Display shows only the best scoring domain model from each source, in each hit category listed below for each region on the query sequence.
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