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Entry version 95 (11 Dec 2019)
Sequence version 1 (06 Dec 2005)
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Protein

Cytochrome b6-f complex iron-sulfur subunit

Gene

petC

Organism
Synechococcus elongatus (strain PCC 7942) (Anacystis nidulans R2)
Status
Reviewed-Annotation score:

Annotation score:3 out of 5

<p>The annotation score provides a heuristic measure of the annotation content of a UniProtKB entry or proteome. This score <strong>cannot</strong> be used as a measure of the accuracy of the annotation as we cannot define the ‘correct annotation’ for any given protein.<p><a href='/help/annotation_score' target='_top'>More...</a></p>
-Protein inferred from homologyi <p>This indicates the type of evidence that supports the existence of the protein. Note that the ‘protein existence’ evidence does not give information on the accuracy or correctness of the sequence(s) displayed.<p><a href='/help/protein_existence' target='_top'>More...</a></p>

<p>This section provides any useful information about the protein, mostly biological knowledge.<p><a href='/help/function_section' target='_top'>More...</a></p>Functioni

Component of the cytochrome b6-f complex, which mediates electron transfer between photosystem II (PSII) and photosystem I (PSI), cyclic electron flow around PSI, and state transitions.UniRule annotation

Miscellaneous

The Rieske iron-sulfur protein is a high potential 2Fe-2S protein.

<p>This subsection of the <a href="http://www.uniprot.org/help/function_section">Function</a> section describes the catalytic activity of an enzyme, i.e. a chemical reaction that the enzyme catalyzes.<p><a href='/help/catalytic_activity' target='_top'>More...</a></p>Catalytic activityi

<p>This subsection of the ‘Function’ section provides information relevant to cofactors. A cofactor is any non-protein substance required for a protein to be catalytically active. Some cofactors are inorganic, such as the metal atoms zinc, iron, and copper in various oxidation states. Others, such as most vitamins, are organic.<p><a href='/help/cofactor' target='_top'>More...</a></p>Cofactori

[2Fe-2S] clusterUniRule annotationNote: Binds 1 [2Fe-2S] cluster per subunit.UniRule annotation

Sites

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the <a href="http://www.uniprot.org/help/function_section">Function</a> section indicates at which position the protein binds a given metal ion. The nature of the metal is indicated in the ‘Description’ field.<p><a href='/help/metal' target='_top'>More...</a></p>Metal bindingi108Iron-sulfur (2Fe-2S)UniRule annotation1
Metal bindingi110Iron-sulfur (2Fe-2S); via pros nitrogenUniRule annotation1
Metal bindingi126Iron-sulfur (2Fe-2S)UniRule annotation1
Metal bindingi129Iron-sulfur (2Fe-2S); via pros nitrogenUniRule annotation1

<p>The <a href="http://www.geneontology.org/">Gene Ontology (GO)</a> project provides a set of hierarchical controlled vocabulary split into 3 categories:<p><a href='/help/gene_ontology' target='_top'>More...</a></p>GO - Molecular functioni

GO - Biological processi

<p>UniProtKB Keywords constitute a <a href="http://www.uniprot.org/keywords">controlled vocabulary</a> with a hierarchical structure. Keywords summarise the content of a UniProtKB entry and facilitate the search for proteins of interest.<p><a href='/help/keywords' target='_top'>More...</a></p>Keywordsi

Molecular functionTranslocase
Biological processElectron transport, Transport
Ligand2Fe-2S, Iron, Iron-sulfur, Metal-binding

Enzyme and pathway databases

BioCyc Collection of Pathway/Genome Databases

More...
BioCyci
MetaCyc:SYNPCC7942_1232-MONOMER
SYNEL:SYNPCC7942_1232-MONOMER

Protein family/group databases

Transport Classification Database

More...
TCDBi
3.D.3.5.3 the proton-translocating quinol:cytochrome c reductase (qcr) superfamily

<p>This section provides information about the protein and gene name(s) and synonym(s) and about the organism that is the source of the protein sequence.<p><a href='/help/names_and_taxonomy_section' target='_top'>More...</a></p>Names & Taxonomyi

<p>This subsection of the <a href="http://www.uniprot.org/help/names_and_taxonomy_section">Names and taxonomy</a> section provides an exhaustive list of all names of the protein, from commonly used to obsolete, to allow unambiguous identification of a protein.<p><a href='/help/protein_names' target='_top'>More...</a></p>Protein namesi
Recommended name:
Cytochrome b6-f complex iron-sulfur subunitUniRule annotation (EC:7.1.1.6UniRule annotation)
Alternative name(s):
Plastohydroquinone:plastocyanin oxidoreductase iron-sulfur proteinUniRule annotation
Short name:
ISPUniRule annotation
Short name:
RISPUniRule annotation
Rieske iron-sulfur proteinUniRule annotation
<p>This subsection of the <a href="http://www.uniprot.org/help/names_and_taxonomy_section">Names and taxonomy</a> section indicates the name(s) of the gene(s) that code for the protein sequence(s) described in the entry. Four distinct tokens exist: ‘Name’, ‘Synonyms’, ‘Ordered locus names’ and ‘ORF names’.<p><a href='/help/gene_name' target='_top'>More...</a></p>Gene namesi
Name:petCUniRule annotation
Ordered Locus Names:Synpcc7942_1232
<p>This subsection of the <a href="http://www.uniprot.org/help/names_and_taxonomy_section">Names and taxonomy</a> section provides information on the name(s) of the organism that is the source of the protein sequence.<p><a href='/help/organism-name' target='_top'>More...</a></p>OrganismiSynechococcus elongatus (strain PCC 7942) (Anacystis nidulans R2)
<p>This subsection of the <a href="http://www.uniprot.org/help/names_and_taxonomy_section">Names and taxonomy</a> section shows the unique identifier assigned by the NCBI to the source organism of the protein. This is known as the ‘taxonomic identifier’ or ‘taxid’.<p><a href='/help/taxonomic_identifier' target='_top'>More...</a></p>Taxonomic identifieri1140 [NCBI]
<p>This subsection of the <a href="http://www.uniprot.org/help/names_and_taxonomy_section">Names and taxonomy</a> section contains the taxonomic hierarchical classification lineage of the source organism. It lists the nodes as they appear top-down in the taxonomic tree, with the more general grouping listed first.<p><a href='/help/taxonomic_lineage' target='_top'>More...</a></p>Taxonomic lineageiBacteriaCyanobacteriaSynechococcalesSynechococcaceaeSynechococcus
<p>This subsection of the <a href="http://www.uniprot.org/help/names_and_taxonomy_section">Names and taxonomy</a> section is present for entries that are part of a <a href="http://www.uniprot.org/proteomes">proteome</a>, i.e. of a set of proteins thought to be expressed by organisms whose genomes have been completely sequenced.<p><a href='/help/proteomes_manual' target='_top'>More...</a></p>Proteomesi
  • UP000002717 <p>A UniProt <a href="http://www.uniprot.org/manual/proteomes_manual">proteome</a> can consist of several components. <br></br>The component name refers to the genomic component encoding a set of proteins.<p><a href='/help/proteome_component' target='_top'>More...</a></p> Componenti: Chromosome

<p>This section provides information on the location and the topology of the mature protein in the cell.<p><a href='/help/subcellular_location_section' target='_top'>More...</a></p>Subcellular locationi

Topology

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the <a href="http://www.uniprot.org/help/subcellular_location_section">'Subcellular location'</a> section describes the extent of a membrane-spanning region of the protein. It denotes the presence of both alpha-helical transmembrane regions and the membrane spanning regions of beta-barrel transmembrane proteins.<p><a href='/help/transmem' target='_top'>More...</a></p>Transmembranei21 – 43HelicalUniRule annotationAdd BLAST23

GO - Cellular componenti

Keywords - Cellular componenti

Membrane, Thylakoid

<p>This section describes post-translational modifications (PTMs) and/or processing events.<p><a href='/help/ptm_processing_section' target='_top'>More...</a></p>PTM / Processingi

Molecule processing

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the ‘PTM / Processing’ section describes the extent of a polypeptide chain in the mature protein following processing.<p><a href='/help/chain' target='_top'>More...</a></p>ChainiPRO_00002984671 – 179Cytochrome b6-f complex iron-sulfur subunitAdd BLAST179

Amino acid modifications

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the PTM / Processing":/help/ptm_processing_section section describes the positions of cysteine residues participating in disulfide bonds.<p><a href='/help/disulfid' target='_top'>More...</a></p>Disulfide bondi113 ↔ 128UniRule annotation

Keywords - PTMi

Disulfide bond

Proteomic databases

PRoteomics IDEntifications database

More...
PRIDEi
Q31NV7

<p>This section provides information on the quaternary structure of a protein and on interaction(s) with other proteins or protein complexes.<p><a href='/help/interaction_section' target='_top'>More...</a></p>Interactioni

<p>This subsection of the <a href="http://www.uniprot.org/help/interaction_section">'Interaction'</a> section provides information about the protein quaternary structure and interaction(s) with other proteins or protein complexes (with the exception of physiological receptor-ligand interactions which are annotated in the <a href="http://www.uniprot.org/help/function_section">'Function'</a> section).<p><a href='/help/subunit_structure' target='_top'>More...</a></p>Subunit structurei

The 4 large subunits of the cytochrome b6-f complex are cytochrome b6, subunit IV (17 kDa polypeptide, PetD), cytochrome f and the Rieske protein, while the 4 small subunits are PetG, PetL, PetM and PetN. The complex functions as a dimer.

UniRule annotation

Protein-protein interaction databases

STRING: functional protein association networks

More...
STRINGi
1140.Synpcc7942_1232

<p>This section provides information on sequence similarities with other proteins and the domain(s) present in a protein.<p><a href='/help/family_and_domains_section' target='_top'>More...</a></p>Family & Domainsi

Domains and Repeats

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the <a href="http://www.uniprot.org/help/family_and_domains_section">Family and Domains</a> section describes the position and type of a domain, which is defined as a specific combination of secondary structures organized into a characteristic three-dimensional structure or fold.<p><a href='/help/domain' target='_top'>More...</a></p>Domaini61 – 162RieskeUniRule annotationAdd BLAST102

Keywords - Domaini

Transmembrane, Transmembrane helix

Phylogenomic databases

evolutionary genealogy of genes: Non-supervised Orthologous Groups

More...
eggNOGi
ENOG4105DQV Bacteria
COG0723 LUCA

The HOGENOM Database of Homologous Genes from Fully Sequenced Organisms

More...
HOGENOMi
HOG000255192

KEGG Orthology (KO)

More...
KOi
K02636

Identification of Orthologs from Complete Genome Data

More...
OMAi
KGDPTYI

Database of Orthologous Groups

More...
OrthoDBi
1632945at2

Family and domain databases

Gene3D Structural and Functional Annotation of Protein Families

More...
Gene3Di
2.102.10.10, 1 hit

HAMAP database of protein families

More...
HAMAPi
MF_01335 Cytb6_f_Rieske, 1 hit

Integrated resource of protein families, domains and functional sites

More...
InterProi
View protein in InterPro
IPR014909 Cyt_b6-f_cplx_Fe-S_su
IPR023960 Cyt_b6_f_Rieske
IPR017941 Rieske_2Fe-2S
IPR036922 Rieske_2Fe-2S_sf
IPR014349 Rieske_Fe-S_prot
IPR005805 Rieske_Fe-S_prot_C

The PANTHER Classification System

More...
PANTHERi
PTHR10134 PTHR10134, 1 hit

Pfam protein domain database

More...
Pfami
View protein in Pfam
PF08802 CytB6-F_Fe-S, 1 hit
PF00355 Rieske, 1 hit

Protein Motif fingerprint database; a protein domain database

More...
PRINTSi
PR00162 RIESKE

Superfamily database of structural and functional annotation

More...
SUPFAMi
SSF50022 SSF50022, 1 hit

PROSITE; a protein domain and family database

More...
PROSITEi
View protein in PROSITE
PS51296 RIESKE, 1 hit

<p>This section displays by default the canonical protein sequence and upon request all isoforms described in the entry. It also includes information pertinent to the sequence(s), including <a href="http://www.uniprot.org/help/sequence_length">length</a> and <a href="http://www.uniprot.org/help/sequences">molecular weight</a>. The information is filed in different subsections. The current subsections and their content are listed below:<p><a href='/help/sequences_section' target='_top'>More...</a></p>Sequencei

<p>This subsection of the <a href="http://www.uniprot.org/help/sequences_section">Sequence</a> section indicates if the <a href="http://www.uniprot.org/help/canonical_and_isoforms">canonical sequence</a> displayed by default in the entry is complete or not.<p><a href='/help/sequence_status' target='_top'>More...</a></p>Sequence statusi: Complete.

Q31NV7-1 [UniParc]FASTAAdd to basket
« Hide
        10         20         30         40         50
MTQVSGASDV PSMGRRQFMN LLTFGSVTGV ALGALYPVVN YFIPPSSGGS
60 70 80 90 100
GGGVAAKDAL GNDVVLSKFL ADHNVGDRTL VQGLKGDPTY LVVESSEAIG
110 120 130 140 150
DYGINAVCTH LGCVVPWNAS ENKFKCPCHG SQYDATGKVV RGPAPLSLAL
160 170
AHVSVTDDKV FLSPWTETDF RTGDNPWWA
Length:179
Mass (Da):18,834
Last modified:December 6, 2005 - v1
<p>The checksum is a form of redundancy check that is calculated from the sequence. It is useful for tracking sequence updates.</p> <p>It should be noted that while, in theory, two different sequences could have the same checksum value, the likelihood that this would happen is extremely low.</p> <p>However UniProtKB may contain entries with identical sequences in case of multiple genes (paralogs).</p> <p>The checksum is computed as the sequence 64-bit Cyclic Redundancy Check value (CRC64) using the generator polynomial: x<sup>64</sup> + x<sup>4</sup> + x<sup>3</sup> + x + 1. The algorithm is described in the ISO 3309 standard. </p> <p class="publication">Press W.H., Flannery B.P., Teukolsky S.A. and Vetterling W.T.<br /> <strong>Cyclic redundancy and other checksums</strong><br /> <a href="http://www.nrbook.com/b/bookcpdf.php">Numerical recipes in C 2nd ed., pp896-902, Cambridge University Press (1993)</a>)</p> Checksum:iEC139A4D25CAA047
GO

Sequence databases

Select the link destinations:

EMBL nucleotide sequence database

More...
EMBLi

GenBank nucleotide sequence database

More...
GenBanki

DNA Data Bank of Japan; a nucleotide sequence database

More...
DDBJi
Links Updated
CP000100 Genomic DNA Translation: ABB57262.1

NCBI Reference Sequences

More...
RefSeqi
WP_011242632.1, NC_007604.1

Genome annotation databases

Ensembl bacterial and archaeal genome annotation project

More...
EnsemblBacteriai
ABB57262; ABB57262; Synpcc7942_1232

KEGG: Kyoto Encyclopedia of Genes and Genomes

More...
KEGGi
syf:Synpcc7942_1232

<p>This section provides links to proteins that are similar to the protein sequence(s) described in this entry at different levels of sequence identity thresholds (100%, 90% and 50%) based on their membership in UniProt Reference Clusters (<a href="http://www.uniprot.org/help/uniref">UniRef</a>).<p><a href='/help/similar_proteins_section' target='_top'>More...</a></p>Similar proteinsi

<p>This section is used to point to information related to entries and found in data collections other than UniProtKB.<p><a href='/help/cross_references_section' target='_top'>More...</a></p>Cross-referencesi

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
CP000100 Genomic DNA Translation: ABB57262.1
RefSeqiWP_011242632.1, NC_007604.1

3D structure databases

Database of comparative protein structure models

More...
ModBasei
Search...

SWISS-MODEL Interactive Workspace

More...
SWISS-MODEL-Workspacei
Submit a new modelling project...

Protein-protein interaction databases

STRINGi1140.Synpcc7942_1232

Protein family/group databases

TCDBi3.D.3.5.3 the proton-translocating quinol:cytochrome c reductase (qcr) superfamily

Proteomic databases

PRIDEiQ31NV7

Genome annotation databases

EnsemblBacteriaiABB57262; ABB57262; Synpcc7942_1232
KEGGisyf:Synpcc7942_1232

Phylogenomic databases

eggNOGiENOG4105DQV Bacteria
COG0723 LUCA
HOGENOMiHOG000255192
KOiK02636
OMAiKGDPTYI
OrthoDBi1632945at2

Enzyme and pathway databases

BioCyciMetaCyc:SYNPCC7942_1232-MONOMER
SYNEL:SYNPCC7942_1232-MONOMER

Family and domain databases

Gene3Di2.102.10.10, 1 hit
HAMAPiMF_01335 Cytb6_f_Rieske, 1 hit
InterProiView protein in InterPro
IPR014909 Cyt_b6-f_cplx_Fe-S_su
IPR023960 Cyt_b6_f_Rieske
IPR017941 Rieske_2Fe-2S
IPR036922 Rieske_2Fe-2S_sf
IPR014349 Rieske_Fe-S_prot
IPR005805 Rieske_Fe-S_prot_C
PANTHERiPTHR10134 PTHR10134, 1 hit
PfamiView protein in Pfam
PF08802 CytB6-F_Fe-S, 1 hit
PF00355 Rieske, 1 hit
PRINTSiPR00162 RIESKE
SUPFAMiSSF50022 SSF50022, 1 hit
PROSITEiView protein in PROSITE
PS51296 RIESKE, 1 hit

ProtoNet; Automatic hierarchical classification of proteins

More...
ProtoNeti
Search...

MobiDB: a database of protein disorder and mobility annotations

More...
MobiDBi
Search...

<p>This section provides general information on the entry.<p><a href='/help/entry_information_section' target='_top'>More...</a></p>Entry informationi

<p>This subsection of the ‘Entry information’ section provides a mnemonic identifier for a UniProtKB entry, but it is not a stable identifier. Each reviewed entry is assigned a unique entry name upon integration into UniProtKB/Swiss-Prot.<p><a href='/help/entry_name' target='_top'>More...</a></p>Entry nameiUCRI_SYNE7
<p>This subsection of the ‘Entry information’ section provides one or more accession number(s). These are stable identifiers and should be used to cite UniProtKB entries. Upon integration into UniProtKB, each entry is assigned a unique accession number, which is called ‘Primary (citable) accession number’.<p><a href='/help/accession_numbers' target='_top'>More...</a></p>AccessioniPrimary (citable) accession number: Q31NV7
<p>This subsection of the ‘Entry information’ section shows the date of integration of the entry into UniProtKB, the date of the last sequence update and the date of the last annotation modification (‘Last modified’). The version number for both the entry and the <a href="http://www.uniprot.org/help/canonical_and_isoforms">canonical sequence</a> are also displayed.<p><a href='/help/entry_history' target='_top'>More...</a></p>Entry historyiIntegrated into UniProtKB/Swiss-Prot: August 21, 2007
Last sequence update: December 6, 2005
Last modified: December 11, 2019
This is version 95 of the entry and version 1 of the sequence. See complete history.
<p>This subsection of the ‘Entry information’ section indicates whether the entry has been manually annotated and reviewed by UniProtKB curators or not, in other words, if the entry belongs to the Swiss-Prot section of UniProtKB (<strong>reviewed</strong>) or to the computer-annotated TrEMBL section (<strong>unreviewed</strong>).<p><a href='/help/entry_status' target='_top'>More...</a></p>Entry statusiReviewed (UniProtKB/Swiss-Prot)
Annotation programProkaryotic Protein Annotation Program

<p>This section contains any relevant information that doesn’t fit in any other defined sections<p><a href='/help/miscellaneous_section' target='_top'>More...</a></p>Miscellaneousi

Keywords - Technical termi

Reference proteome
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