Cytochrome b (N-terminus)/b6/petB: Cytochrome b is a subunit of cytochrome bc1, an 11-subunit ...
634-856
1.17e-100
Cytochrome b (N-terminus)/b6/petB: Cytochrome b is a subunit of cytochrome bc1, an 11-subunit mitochondrial respiratory enzyme. Cytochrome b spans the mitochondrial membrane with 8 transmembrane helices (A-H) in eukaryotes. In plants and cyanobacteria, cytochrome b6 is analogous to eukaryote cytochrome b, containing two chains: helices A-D are encoded by the petB gene and helices E-H are encoded by the petD gene in these organisms. Cytochrome b/b6 contains two bound hemes and two ubiquinol/ubiquinone binding sites. The C-terminal portion of cytochrome b is described in a separate CD.
The actual alignment was detected with superfamily member PLN02351:
Pssm-ID: 474033 Cd Length: 242 Bit Score: 313.00 E-value: 1.17e-100
Like-Sm protein 14, N-terminal domain; LSm14 (also known as RAP55) belongs to a family of ...
16-87
1.83e-38
Like-Sm protein 14, N-terminal domain; LSm14 (also known as RAP55) belongs to a family of Sm-like proteins that associate with RNA to form the core domain of the ribonucleoprotein particles involved in a variety of RNA processing events including pre-mRNA splicing, telomere replication, and mRNA degradation. Members of this family share a highly conserved Sm fold, containing an N-terminal helix followed by a strongly bent five-stranded antiparallel beta-sheet, that associates with other Sm proteins to form hexameric and heptameric ring structures. In addition to the N-terminal Sm-like domain, LSm14 has an uncharacterized C-terminal domain containing a conserved DFDF box. In Xenopus laevis, LSm14 is an oocyte-specific constituent of ribonucleoprotein particles.
:
Pssm-ID: 212483 Cd Length: 74 Bit Score: 137.33 E-value: 1.83e-38
FDF domain; The FDF domain, so called because of the conserved FDF at its N termini, is an ...
449-552
3.38e-20
FDF domain; The FDF domain, so called because of the conserved FDF at its N termini, is an entirely alpha-helical domain with multiple exposed hydrophilic loops. It is found at the C terminus of Scd6p-like SM domains. It is also found with other divergent Sm domains and in proteins such as Dcp3p and FLJ21128, where it is found N terminal to the YjeF-N domain, a novel Rossmann fold domain.
The actual alignment was detected with superfamily member pfam09532:
Pssm-ID: 430668 Cd Length: 104 Bit Score: 86.35 E-value: 3.38e-20
Atrophin-1 family; Atrophin-1 is the protein product of the dentatorubral-pallidoluysian ...
85-412
1.30e-07
Atrophin-1 family; Atrophin-1 is the protein product of the dentatorubral-pallidoluysian atrophy (DRPLA) gene. DRPLA OMIM:125370 is a progressive neurodegenerative disorder. It is caused by the expansion of a CAG repeat in the DRPLA gene on chromosome 12p. This results in an extended polyglutamine region in atrophin-1, that is thought to confer toxicity to the protein, possibly through altering its interactions with other proteins. The expansion of a CAG repeat is also the underlying defect in six other neurodegenerative disorders, including Huntington's disease. One interaction of expanded polyglutamine repeats that is thought to be pathogenic is that with the short glutamine repeat in the transcriptional coactivator CREB binding protein, CBP. This interaction draws CBP away from its usual nuclear location to the expanded polyglutamine repeat protein aggregates that are characteriztic of the polyglutamine neurodegenerative disorders. This interferes with CBP-mediated transcription and causes cytotoxicity.
The actual alignment was detected with superfamily member pfam03154:
Pssm-ID: 460830 [Multi-domain] Cd Length: 991 Bit Score: 55.54 E-value: 1.30e-07
Plant cytochrome b(561), including the carbon monoxide oxygenase ACYB-1; Cytochrome b(561), as ...
679-818
4.23e-60
Plant cytochrome b(561), including the carbon monoxide oxygenase ACYB-1; Cytochrome b(561), as found in plants, similar to the Arabidopsis thaliana ACYB-1 gene product, a cytochrome b561 isoform localized to the tonoplast. This protein might act as a ferric-chelate reductase, catalyzing the reduction of Fe(3+) to Fe(2+), and might be capable of trans-membrane electron transport from intracellular ascorbate to extracellular ferric chelates. It is assumed that this protein uses ascorbate as the electron donor. Belongs to the cytochrome b(561) family, which are secretory vesicle-specific electron transport proteins. Cytochromes b(561) are integral membrane proteins that bind two heme groups non-covalently, and may have six alpha-helical trans-membrane segments.
Pssm-ID: 176496 Cd Length: 144 Bit Score: 200.61 E-value: 4.23e-60
Eukaryotic cytochrome b561; Cytochrome b561 is a secretory vesicle-specific electron transport ...
685-815
1.41e-41
Eukaryotic cytochrome b561; Cytochrome b561 is a secretory vesicle-specific electron transport protein. It is an integral membrane protein, that binds two heme groups non-covalently. This is a eukaryotic family. Members of the 'prokaryotic cytochrome b561' family can be found in Pfam: PF01292.
Pssm-ID: 427188 Cd Length: 137 Bit Score: 148.52 E-value: 1.41e-41
Like-Sm protein 14, N-terminal domain; LSm14 (also known as RAP55) belongs to a family of ...
16-87
1.83e-38
Like-Sm protein 14, N-terminal domain; LSm14 (also known as RAP55) belongs to a family of Sm-like proteins that associate with RNA to form the core domain of the ribonucleoprotein particles involved in a variety of RNA processing events including pre-mRNA splicing, telomere replication, and mRNA degradation. Members of this family share a highly conserved Sm fold, containing an N-terminal helix followed by a strongly bent five-stranded antiparallel beta-sheet, that associates with other Sm proteins to form hexameric and heptameric ring structures. In addition to the N-terminal Sm-like domain, LSm14 has an uncharacterized C-terminal domain containing a conserved DFDF box. In Xenopus laevis, LSm14 is an oocyte-specific constituent of ribonucleoprotein particles.
Pssm-ID: 212483 Cd Length: 74 Bit Score: 137.33 E-value: 1.83e-38
Scd6-like Sm domain; The Scd6-like Sm domain is found in Scd6p from S. cerevisiae, Rap55 from ...
16-87
3.19e-38
Scd6-like Sm domain; The Scd6-like Sm domain is found in Scd6p from S. cerevisiae, Rap55 from the newt Pleurodeles walt, and its orthologs from fungi, animals, plants and apicomplexans. The domain is also found in Dcp3p and the human EDC3/FLJ21128 protein where it is fused to the the Rossmanoid YjeF-N domain. In addition both EDC3 and Scd6p are found fused to the FDF domain.
Pssm-ID: 463675 Cd Length: 75 Bit Score: 136.48 E-value: 3.19e-38
Cytochrome b-561 / ferric reductase transmembrane domain; Cytochrome b-561 recycles ascorbate for the generation of norepinephrine by dopamine-beta-hydroxylase in the chromaffin vesicles of the adrenal gland. It is a transmembrane heme protein with the two heme groups being bound to conserved histidine residues. A cytochrome b-561 homologue, termed Dcytb, is an iron-regulated ferric reductase in the duodenal mucosa. Other homologues of these are also likely to be ferric reductases. SDR2 is proposed to be important in regulating the metabolism of iron in the onset of neurodegenerative disorders.
Pssm-ID: 214769 Cd Length: 129 Bit Score: 130.04 E-value: 3.29e-35
FDF domain; The FDF domain, so called because of the conserved FDF at its N termini, is an ...
449-552
3.38e-20
FDF domain; The FDF domain, so called because of the conserved FDF at its N termini, is an entirely alpha-helical domain with multiple exposed hydrophilic loops. It is found at the C terminus of Scd6p-like SM domains. It is also found with other divergent Sm domains and in proteins such as Dcp3p and FLJ21128, where it is found N terminal to the YjeF-N domain, a novel Rossmann fold domain.
Pssm-ID: 430668 Cd Length: 104 Bit Score: 86.35 E-value: 3.38e-20
Atrophin-1 family; Atrophin-1 is the protein product of the dentatorubral-pallidoluysian ...
85-412
1.30e-07
Atrophin-1 family; Atrophin-1 is the protein product of the dentatorubral-pallidoluysian atrophy (DRPLA) gene. DRPLA OMIM:125370 is a progressive neurodegenerative disorder. It is caused by the expansion of a CAG repeat in the DRPLA gene on chromosome 12p. This results in an extended polyglutamine region in atrophin-1, that is thought to confer toxicity to the protein, possibly through altering its interactions with other proteins. The expansion of a CAG repeat is also the underlying defect in six other neurodegenerative disorders, including Huntington's disease. One interaction of expanded polyglutamine repeats that is thought to be pathogenic is that with the short glutamine repeat in the transcriptional coactivator CREB binding protein, CBP. This interaction draws CBP away from its usual nuclear location to the expanded polyglutamine repeat protein aggregates that are characteriztic of the polyglutamine neurodegenerative disorders. This interferes with CBP-mediated transcription and causes cytotoxicity.
Pssm-ID: 460830 [Multi-domain] Cd Length: 991 Bit Score: 55.54 E-value: 1.30e-07
Plant cytochrome b(561), including the carbon monoxide oxygenase ACYB-1; Cytochrome b(561), as ...
679-818
4.23e-60
Plant cytochrome b(561), including the carbon monoxide oxygenase ACYB-1; Cytochrome b(561), as found in plants, similar to the Arabidopsis thaliana ACYB-1 gene product, a cytochrome b561 isoform localized to the tonoplast. This protein might act as a ferric-chelate reductase, catalyzing the reduction of Fe(3+) to Fe(2+), and might be capable of trans-membrane electron transport from intracellular ascorbate to extracellular ferric chelates. It is assumed that this protein uses ascorbate as the electron donor. Belongs to the cytochrome b(561) family, which are secretory vesicle-specific electron transport proteins. Cytochromes b(561) are integral membrane proteins that bind two heme groups non-covalently, and may have six alpha-helical trans-membrane segments.
Pssm-ID: 176496 Cd Length: 144 Bit Score: 200.61 E-value: 4.23e-60
Eukaryotic cytochrome b561; Cytochrome b561 is a secretory vesicle-specific electron transport ...
685-815
1.41e-41
Eukaryotic cytochrome b561; Cytochrome b561 is a secretory vesicle-specific electron transport protein. It is an integral membrane protein, that binds two heme groups non-covalently. This is a eukaryotic family. Members of the 'prokaryotic cytochrome b561' family can be found in Pfam: PF01292.
Pssm-ID: 427188 Cd Length: 137 Bit Score: 148.52 E-value: 1.41e-41
Like-Sm protein 14, N-terminal domain; LSm14 (also known as RAP55) belongs to a family of ...
16-87
1.83e-38
Like-Sm protein 14, N-terminal domain; LSm14 (also known as RAP55) belongs to a family of Sm-like proteins that associate with RNA to form the core domain of the ribonucleoprotein particles involved in a variety of RNA processing events including pre-mRNA splicing, telomere replication, and mRNA degradation. Members of this family share a highly conserved Sm fold, containing an N-terminal helix followed by a strongly bent five-stranded antiparallel beta-sheet, that associates with other Sm proteins to form hexameric and heptameric ring structures. In addition to the N-terminal Sm-like domain, LSm14 has an uncharacterized C-terminal domain containing a conserved DFDF box. In Xenopus laevis, LSm14 is an oocyte-specific constituent of ribonucleoprotein particles.
Pssm-ID: 212483 Cd Length: 74 Bit Score: 137.33 E-value: 1.83e-38
Scd6-like Sm domain; The Scd6-like Sm domain is found in Scd6p from S. cerevisiae, Rap55 from ...
16-87
3.19e-38
Scd6-like Sm domain; The Scd6-like Sm domain is found in Scd6p from S. cerevisiae, Rap55 from the newt Pleurodeles walt, and its orthologs from fungi, animals, plants and apicomplexans. The domain is also found in Dcp3p and the human EDC3/FLJ21128 protein where it is fused to the the Rossmanoid YjeF-N domain. In addition both EDC3 and Scd6p are found fused to the FDF domain.
Pssm-ID: 463675 Cd Length: 75 Bit Score: 136.48 E-value: 3.19e-38
Cytochrome b-561 / ferric reductase transmembrane domain; Cytochrome b-561 recycles ascorbate for the generation of norepinephrine by dopamine-beta-hydroxylase in the chromaffin vesicles of the adrenal gland. It is a transmembrane heme protein with the two heme groups being bound to conserved histidine residues. A cytochrome b-561 homologue, termed Dcytb, is an iron-regulated ferric reductase in the duodenal mucosa. Other homologues of these are also likely to be ferric reductases. SDR2 is proposed to be important in regulating the metabolism of iron in the onset of neurodegenerative disorders.
Pssm-ID: 214769 Cd Length: 129 Bit Score: 130.04 E-value: 3.29e-35
Eukaryotic cytochrome b(561); Cytochrome b(561) is a family of endosomal or secretory ...
685-810
5.43e-30
Eukaryotic cytochrome b(561); Cytochrome b(561) is a family of endosomal or secretory vesicle-specific electron transport proteins. They are integral membrane proteins that bind two heme groups non-covalently, and may have six alpha-helical trans-membrane segments. This is an exclusively eukaryotic family. Members of the prokaryotic cytochrome b561 family are not deemed homologous.
Pssm-ID: 176489 Cd Length: 131 Bit Score: 115.46 E-value: 5.43e-30
Non-vertebrate eumetazoan cytochrome b(561); Cytochrome b(561), as found in non-vertebrate ...
657-856
2.29e-27
Non-vertebrate eumetazoan cytochrome b(561); Cytochrome b(561), as found in non-vertebrate eumetazoans, similar to the Drosophila melanogaster CG1275 gene product. This protein might act as a ferric-chelate reductase, catalyzing the reduction of Fe(3+) to Fe(2+), such as associated with the transport of iron from the endosome to the cytoplasm. It is assumed that this protein uses ascorbate as the electron donor. Belongs to the cytochrome b(561) family, which are secretory vesicle-specific electron transport proteins. Cytochromes b(561) are integral membrane proteins that bind two heme groups non-covalently, and may have six alpha-helical trans-membrane segments.
Pssm-ID: 176494 Cd Length: 214 Bit Score: 110.50 E-value: 2.29e-27
FDF domain; The FDF domain, so called because of the conserved FDF at its N termini, is an ...
449-552
3.38e-20
FDF domain; The FDF domain, so called because of the conserved FDF at its N termini, is an entirely alpha-helical domain with multiple exposed hydrophilic loops. It is found at the C terminus of Scd6p-like SM domains. It is also found with other divergent Sm domains and in proteins such as Dcp3p and FLJ21128, where it is found N terminal to the YjeF-N domain, a novel Rossmann fold domain.
Pssm-ID: 430668 Cd Length: 104 Bit Score: 86.35 E-value: 3.38e-20
Vertebrate cytochrome b(561), CYB561 gene product; Cytochrome b(561), as found in vertebrates, ...
686-814
6.00e-16
Vertebrate cytochrome b(561), CYB561 gene product; Cytochrome b(561), as found in vertebrates, which might act as a ferric-chelate reductase, catalyzing the reduction of Fe(3+) to Fe(2+), such as associated with the transport of iron from the endosome to the cytoplasm. It is assumed that this protein uses ascorbate as the electron donor. Belongs to the cytochrome b(561) family, which are secretory vesicle-specific electron transport proteins. Cytochromes b(561) are integral membrane proteins that bind two heme groups non-covalently, and may have six alpha-helical trans-membrane segments.
Pssm-ID: 176493 Cd Length: 143 Bit Score: 75.62 E-value: 6.00e-16
Eukaryotic cytochrome b(561), including the CYB561D2 gene product; Cytochrome b(561), as found ...
663-812
2.71e-15
Eukaryotic cytochrome b(561), including the CYB561D2 gene product; Cytochrome b(561), as found in eukaryotes, similar to and including the human CYB561D2 gene product. CYB561D2 is a candidate tumor suppressor. The protein might act as a ferric-chelate reductase, catalyzing the reduction of Fe(3+) to Fe(2+), such as associated with the transport of iron from the endosome to the cytoplasm. It is assumed that this protein uses ascorbate as the electron donor. Belongs to the cytochrome b(561) family, which are secretory vesicle-specific electron transport proteins. Cytochromes b(561) are integral membrane proteins that bind two heme groups non-covalently, and may have six alpha-helical trans-membrane segments.
Pssm-ID: 176491 Cd Length: 183 Bit Score: 75.02 E-value: 2.71e-15
Vertebrate cytochrome b(561), CYBASC3 gene product; Cytochrome b ascorbate-dependent 3, as ...
646-814
7.80e-13
Vertebrate cytochrome b(561), CYBASC3 gene product; Cytochrome b ascorbate-dependent 3, as found in vertebrates, which might act as a ferric-chelate reductase, catalyzing the reduction of Fe(3+) to Fe(2+), such as associated with the transport of iron from the endosome to the cytoplasm. It is assumed that this protein uses ascorbate as the electron donor. Belongs to the cytochrome b(561) family, which are secretory vesicle-specific electron transport proteins. Cytochromes b(561) are integral membrane proteins that bind two heme groups non-covalently, and may have six alpha-helical trans-membrane segments.
Pssm-ID: 176492 Cd Length: 179 Bit Score: 67.59 E-value: 7.80e-13
Vertebrate cytochrome b(561), CYBRD1 gene product; Duodenal cytochrome b or ferric-chelate ...
686-814
7.96e-13
Vertebrate cytochrome b(561), CYBRD1 gene product; Duodenal cytochrome b or ferric-chelate reductase 3, a cytochrome b(561), as found in vertebrates, which might act as a ferric-chelate reductase, catalyzing the reduction of Fe(3+) to Fe(2+), such as associated with the transport of iron from the endosome to the cytoplasm. It is assumed that this protein uses ascorbate as the electron donor. This protein is expressed at the brush border of duodenal enterocytes and may play a role in the uptake of dietary Fe(3+), facilitating its transport into the mucosal cells. It may also be involved in the recycling of extracellular ascorbate in erythrocyte membranes, and act as a ferrireductase in epithelial cells of the respiratory system. Belongs to the cytochrome b(561) family, which are secretory vesicle-specific electron transport proteins. Cytochromes b(561) are integral membrane proteins that bind two heme groups non-covalently, and may have six alpha-helical trans-membrane segments.
Pssm-ID: 176495 Cd Length: 153 Bit Score: 66.84 E-value: 7.96e-13
Eukaryotic cytochrome b(561), including the FRRS1 gene product; Cytochrome b(561), as found in ...
658-810
4.98e-09
Eukaryotic cytochrome b(561), including the FRRS1 gene product; Cytochrome b(561), as found in eukaryotes, similar to and including the human FRRS1 gene product (ferric-chelate reductase 1), also called SDR-2 (stromal cell-derived receptor 2). This family comprises a variety of domain architectures, many of which contain dopamine beta-monooxygenase (DOMON) domains. The protein might act as a ferric-chelate reductase, catalyzing the reduction of Fe(3+) to Fe(2+), such as associated with the transport of iron from the endosome to the cytoplasm. It is assumed that this protein uses ascorbate as the electron donor. Belongs to the cytochrome b(561) family, which are secretory vesicle-specific electron transport proteins. Cytochromes b(561) are integral membrane proteins that bind two heme groups non-covalently, and may have six alpha-helical trans-membrane segments.
Pssm-ID: 176490 Cd Length: 191 Bit Score: 56.97 E-value: 4.98e-09
Atrophin-1 family; Atrophin-1 is the protein product of the dentatorubral-pallidoluysian ...
85-412
1.30e-07
Atrophin-1 family; Atrophin-1 is the protein product of the dentatorubral-pallidoluysian atrophy (DRPLA) gene. DRPLA OMIM:125370 is a progressive neurodegenerative disorder. It is caused by the expansion of a CAG repeat in the DRPLA gene on chromosome 12p. This results in an extended polyglutamine region in atrophin-1, that is thought to confer toxicity to the protein, possibly through altering its interactions with other proteins. The expansion of a CAG repeat is also the underlying defect in six other neurodegenerative disorders, including Huntington's disease. One interaction of expanded polyglutamine repeats that is thought to be pathogenic is that with the short glutamine repeat in the transcriptional coactivator CREB binding protein, CBP. This interaction draws CBP away from its usual nuclear location to the expanded polyglutamine repeat protein aggregates that are characteriztic of the polyglutamine neurodegenerative disorders. This interferes with CBP-mediated transcription and causes cytotoxicity.
Pssm-ID: 460830 [Multi-domain] Cd Length: 991 Bit Score: 55.54 E-value: 1.30e-07
Herpes virus major outer envelope glycoprotein (BLLF1); This family consists of the BLLF1 ...
241-429
8.20e-05
Herpes virus major outer envelope glycoprotein (BLLF1); This family consists of the BLLF1 viral late glycoprotein, also termed gp350/220. It is the most abundantly expressed glycoprotein in the viral envelope of the Herpesviruses and is the major antigen responsible for stimulating the production of neutralising antibodies in vivo.
Pssm-ID: 282904 [Multi-domain] Cd Length: 886 Bit Score: 46.45 E-value: 8.20e-05
Herpes virus major outer envelope glycoprotein (BLLF1); This family consists of the BLLF1 ...
204-416
4.91e-03
Herpes virus major outer envelope glycoprotein (BLLF1); This family consists of the BLLF1 viral late glycoprotein, also termed gp350/220. It is the most abundantly expressed glycoprotein in the viral envelope of the Herpesviruses and is the major antigen responsible for stimulating the production of neutralising antibodies in vivo.
Pssm-ID: 282904 [Multi-domain] Cd Length: 886 Bit Score: 40.67 E-value: 4.91e-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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