stAR-related lipid transfer protein 4 isoform X3 [Homo sapiens]
SRPBCC family protein( domain architecture ID 51693)
SRPBCC (START/RHOalphaC/PITP/Bet v1/CoxG/CalC) family protein may have a deep hydrophobic ligand-binding pocket
List of domain hits
Name | Accession | Description | Interval | E-value | |||
SRPBCC super family | cl14643 | START/RHO_alpha_C/PITP/Bet_v1/CoxG/CalC (SRPBCC) ligand-binding domain superfamily; SRPBCC ... |
1-107 | 2.40e-80 | |||
START/RHO_alpha_C/PITP/Bet_v1/CoxG/CalC (SRPBCC) ligand-binding domain superfamily; SRPBCC domains have a deep hydrophobic ligand-binding pocket; they bind diverse ligands. Included in this superfamily are the steroidogenic acute regulatory protein (StAR)-related lipid transfer (START) domains of mammalian STARD1-STARD15, and the C-terminal catalytic domains of the alpha oxygenase subunit of Rieske-type non-heme iron aromatic ring-hydroxylating oxygenases (RHOs_alpha_C), as well as the SRPBCC domains of phosphatidylinositol transfer proteins (PITPs), Bet v 1 (the major pollen allergen of white birch, Betula verrucosa), CoxG, CalC, and related proteins. Other members of this superfamily include PYR/PYL/RCAR plant proteins, the aromatase/cyclase (ARO/CYC) domains of proteins such as Streptomyces glaucescens tetracenomycin, and the SRPBCC domains of Streptococcus mutans Smu.440 and related proteins. The actual alignment was detected with superfamily member cd08902: Pssm-ID: 472699 Cd Length: 202 Bit Score: 233.69 E-value: 2.40e-80
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Name | Accession | Description | Interval | E-value | |||
START_STARD4-like | cd08902 | Lipid-binding START domain of mammalian STARD4 and related proteins; This subgroup includes ... |
1-107 | 2.40e-80 | |||
Lipid-binding START domain of mammalian STARD4 and related proteins; This subgroup includes the steroidogenic acute regulatory protein (StAR)-related lipid transfer (START) domains of mammalian STARD4 and related domains. It belongs to the START domain family, and in turn to the SRPBCC (START/RHO_alpha_C/PITP/Bet_v1/CoxG/CalC) domain superfamily of proteins that bind hydrophobic ligands. SRPBCC domains have a deep hydrophobic ligand-binding pocket. STARD4 plays an important role in steroidogenesis, trafficking cholesterol into mitochondria. It specifically binds cholesterol, and demonstrates limited binding to another sterol, 7alpha-hydroxycholesterol. STARD4 is ubiquitously expressed, with highest levels in liver and kidney. Pssm-ID: 176911 Cd Length: 202 Bit Score: 233.69 E-value: 2.40e-80
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START | smart00234 | in StAR and phosphatidylcholine transfer protein; putative lipid-binding domain in StAR and ... |
3-107 | 1.12e-09 | |||
in StAR and phosphatidylcholine transfer protein; putative lipid-binding domain in StAR and phosphatidylcholine transfer protein Pssm-ID: 214575 Cd Length: 205 Bit Score: 52.82 E-value: 1.12e-09
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START | pfam01852 | START domain; |
3-107 | 7.40e-08 | |||
START domain; Pssm-ID: 426476 Cd Length: 205 Bit Score: 48.17 E-value: 7.40e-08
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Name | Accession | Description | Interval | E-value | |||
START_STARD4-like | cd08902 | Lipid-binding START domain of mammalian STARD4 and related proteins; This subgroup includes ... |
1-107 | 2.40e-80 | |||
Lipid-binding START domain of mammalian STARD4 and related proteins; This subgroup includes the steroidogenic acute regulatory protein (StAR)-related lipid transfer (START) domains of mammalian STARD4 and related domains. It belongs to the START domain family, and in turn to the SRPBCC (START/RHO_alpha_C/PITP/Bet_v1/CoxG/CalC) domain superfamily of proteins that bind hydrophobic ligands. SRPBCC domains have a deep hydrophobic ligand-binding pocket. STARD4 plays an important role in steroidogenesis, trafficking cholesterol into mitochondria. It specifically binds cholesterol, and demonstrates limited binding to another sterol, 7alpha-hydroxycholesterol. STARD4 is ubiquitously expressed, with highest levels in liver and kidney. Pssm-ID: 176911 Cd Length: 202 Bit Score: 233.69 E-value: 2.40e-80
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START_STARD4_5_6-like | cd08867 | Lipid-binding START domain of mammalian STARD4, -5, -6, and related proteins; This subfamily ... |
1-107 | 3.00e-57 | |||
Lipid-binding START domain of mammalian STARD4, -5, -6, and related proteins; This subfamily includes the steroidogenic acute regulatory protein (StAR)-related lipid transfer (START) domains of mammalian STARD4, -5, and -6. The START domain family belongs to the SRPBCC (START/RHO_alpha_C/PITP/Bet_v1/CoxG/CalC) domain superfamily of proteins that bind hydrophobic ligands. SRPBCC domains have a deep hydrophobic ligand-binding pocket. STARD4 plays an important role in steroidogenesis, trafficking cholesterol into mitochondria. It specifically binds cholesterol, and demonstrates limited binding to another sterol, 7a-hydroxycholesterol. STARD4 and STARD5 are ubiquitously expressed, with highest levels in liver and kidney. STRAD5 functions in the kidney within the proximal tubule cells where it is associated with the Endoplasmic Reticulum (ER), and may participate in ER-associated cholesterol transport. It binds cholesterol and 25-hydroxycholesterol. Expression of the gene encoding STARD5 is increased by ER stress, and its mRNA and protein levels are elevated in a type I diabetic mouse model of human diabetic nephropathy. STARD6 is expressed in male germ cells of normal rats, and in the steroidogenic Leydig cells of perinatal hypothyroid testes. It may play a pivotal role in the steroidogenesis as well as in the spermatogenesis of normal rats. STARD6 has also been detected in the rat nervous system, and may participate in neurosteroid synthesis. Pssm-ID: 176876 Cd Length: 206 Bit Score: 175.34 E-value: 3.00e-57
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START_STARD5-like | cd08903 | Lipid-binding START domain of mammalian STARD5 and related proteins; This subgroup includes ... |
2-107 | 6.36e-26 | |||
Lipid-binding START domain of mammalian STARD5 and related proteins; This subgroup includes the steroidogenic acute regulatory protein (StAR)-related lipid transfer (START) domains of mammalian STARD5, and related domains. It belongs to the START domain family, and in turn to the SRPBCC (START/RHO_alpha_C/PITP/Bet_v1/CoxG/CalC) domain superfamily of proteins that bind hydrophobic ligands. SRPBCC domains have a deep hydrophobic ligand-binding pocket. STARD5 is ubiquitously expressed, with highest levels in liver and kidney. STARD5 functions in the kidney within the proximal tubule cells where it is associated with the Endoplasmic Reticulum (ER), and may participate in ER-associated cholesterol transport. It binds cholesterol and 25-hydroxycholesterol. Expression of the gene encoding STARD5 is increased by ER stress, and its mRNA and protein levels are elevated in a type I diabetic mouse model of human diabetic nephropathy. Pssm-ID: 176912 Cd Length: 208 Bit Score: 95.67 E-value: 6.36e-26
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START_STARD6-like | cd08904 | Lipid-binding START domain of mammalian STARD6 and related proteins; This subgroup includes ... |
13-104 | 1.94e-23 | |||
Lipid-binding START domain of mammalian STARD6 and related proteins; This subgroup includes the steroidogenic acute regulatory protein (StAR)-related lipid transfer (START) domains of mammalian STARD6 and related domains. It belongs to the START domain family, and in turn to the SRPBCC (START/RHO_alpha_C/PITP/Bet_v1/CoxG/CalC) domain superfamily of proteins that bind hydrophobic ligands. SRPBCC domains have a deep hydrophobic ligand-binding pocket. STARD6 is expressed in male germ cells of normal rats, and in the steroidogenic Leydig cells of perinatal hypothyroid testes. It may play a pivotal role in the steroidogenesis as well as in the spermatogenesis of normal rats. STARD6 has also been detected in the rat nervous system, and may participate in neurosteroid synthesis. Pssm-ID: 176913 Cd Length: 204 Bit Score: 89.20 E-value: 1.94e-23
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START | cd00177 | Lipid-binding START domain of mammalian STARD1-STARD15 and related proteins; This family ... |
12-107 | 2.00e-20 | |||
Lipid-binding START domain of mammalian STARD1-STARD15 and related proteins; This family includes the steroidogenic acute regulatory protein (StAR)-related lipid transfer (START) domains of mammalian STARD1-STARD15, and related domains, such as the START domain of the Arabidopsis homeobox protein GLABRA 2. The mammalian STARDs are grouped into 8 subfamilies. This family belongs to the SRPBCC (START/RHO_alpha_C/PITP/Bet_v1/CoxG/CalC) domain superfamily of proteins that bind hydrophobic ligands. SRPBCC domains have a deep hydrophobic ligand-binding pocket. For some members of this family, specific lipids that bind in this pocket are known; these include cholesterol (STARD1/STARD3/ STARD4/STARD5), 25-hydroxycholesterol (STARD5), phosphatidylcholine (STARD2/ STARD7/STARD10), phosphatidylethanolamine (STARD10) and ceramides (STARD11). The START domain is found either alone or in association with other domains. Mammalian STARDs participate in the control of various cellular processes including lipid trafficking between intracellular compartments, lipid metabolism, and modulation of signaling events. Mutation or altered expression of STARDs is linked to diseases such as cancer, genetic disorders, and autoimmune disease. The Arabidopsis homeobox protein GLABRA 2 suppresses root hair formation in hairless epidermal root cells. Pssm-ID: 176851 [Multi-domain] Cd Length: 193 Bit Score: 80.85 E-value: 2.00e-20
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START_STARD1_3_like | cd08868 | Cholesterol-binding START domain of mammalian STARD1, -3 and related proteins; This subfamily ... |
5-105 | 3.80e-20 | |||
Cholesterol-binding START domain of mammalian STARD1, -3 and related proteins; This subfamily includes the steroidogenic acute regulatory protein (StAR)-related lipid transfer (START) domains of STARD1 (also known as StAR) and STARD3 (also known as metastatic lymph node 64/MLN64). The START domain family belongs to the SRPBCC (START/RHO_alpha_C/PITP/Bet_v1/CoxG/CalC) domain superfamily of proteins that bind hydrophobic ligands. SRPBCC domains have a deep hydrophobic ligand-binding pocket. This STARD1-like subfamily has a high affinity for cholesterol. STARD1/StAR can reduce macrophage lipid content and inflammatory status. It plays an essential role in steroidogenic tissues: transferring the steroid precursor, cholesterol, from the outer to the inner mitochondrial membrane, across the aqueous space. Mutations in the gene encoding STARD1/StAR can cause lipid congenital adrenal hyperplasia (CAH), an autosomal recessive disorder characterized by a steroid synthesis deficiency and an accumulation of cholesterol in the adrenal glands and the gonads. STARD3 may function in trafficking endosomal cholesterol to a cytosolic acceptor or membrane. In addition to having a cytoplasmic START cholesterol-binding domain, STARD3 also contains an N-terminal MENTAL cholesterol-binding and protein-protein interaction domain. The MENTAL domain contains transmembrane helices and anchors MLN64 to endosome membranes. The gene encoding STARD3 is overexpressed in about 25% of breast cancers. Pssm-ID: 176877 Cd Length: 208 Bit Score: 80.48 E-value: 3.80e-20
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START_STARD3-like | cd08906 | Cholesterol-binding START domain of mammalian STARD3 and related proteins; This subgroup ... |
5-107 | 3.48e-14 | |||
Cholesterol-binding START domain of mammalian STARD3 and related proteins; This subgroup includes the steroidogenic acute regulatory protein (StAR)-related lipid transfer (START) domains of STARD3 (also known as metastatic lymph node 64/MLN64) and related proteins. It belongs to the START domain family, and in turn to the SRPBCC (START/RHO_alpha_C/PITP/Bet_v1/CoxG/CalC) domain superfamily of proteins that bind hydrophobic ligands. SRPBCC domains have a deep hydrophobic ligand-binding pocket. STARD3 has a high affinity for cholesterol. It may function in trafficking endosomal cholesterol to a cytosolic acceptor or membrane. In addition to having a cytoplasmic START cholesterol-binding domain, STARD3 also contains an N-terminal MENTAL cholesterol-binding and protein-protein interaction domain. The MENTAL domain contains transmembrane helices and anchors MLN64 to endosome membranes. The gene encoding STARD3 is overexpressed in about 25% of breast cancers. Pssm-ID: 176915 Cd Length: 209 Bit Score: 64.88 E-value: 3.48e-14
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START_STARD1-like | cd08905 | Cholesterol-binding START domain of mammalian STARD1 and related proteins; This subgroup ... |
2-107 | 1.77e-10 | |||
Cholesterol-binding START domain of mammalian STARD1 and related proteins; This subgroup includes the steroidogenic acute regulatory protein (StAR)-related lipid transfer (START) domains of STARD1 (also known as StAR) and related proteins. It belongs to the START domain family, and in turn to the SRPBCC (START/RHO_alpha_C/PITP/Bet_v1/CoxG/CalC) domain superfamily of proteins that bind hydrophobic ligands. SRPBCC domains have a deep hydrophobic ligand-binding pocket. STARD1 has a high affinity for cholesterol. It can reduce macrophage lipid content and inflammatory status. It plays an essential role in steroidogenic tissues: transferring the steroid precursor, cholesterol, from the outer to the inner mitochondrial membrane, across the aqueous space. Mutations in the gene encoding STARD1/StAR can cause lipid congenital adrenal hyperplasia (CAH), an autosomal recessive disorder characterized by a steroid synthesis deficiency and an accumulation of cholesterol in the adrenal glands and the gonads. Pssm-ID: 176914 Cd Length: 209 Bit Score: 55.23 E-value: 1.77e-10
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START | smart00234 | in StAR and phosphatidylcholine transfer protein; putative lipid-binding domain in StAR and ... |
3-107 | 1.12e-09 | |||
in StAR and phosphatidylcholine transfer protein; putative lipid-binding domain in StAR and phosphatidylcholine transfer protein Pssm-ID: 214575 Cd Length: 205 Bit Score: 52.82 E-value: 1.12e-09
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START | pfam01852 | START domain; |
3-107 | 7.40e-08 | |||
START domain; Pssm-ID: 426476 Cd Length: 205 Bit Score: 48.17 E-value: 7.40e-08
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Blast search parameters | ||||
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