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UniProtKB - P00127 (QCR6_YEAST)

Entry version 193 (23 Feb 2022)
Sequence version 2 (01 Nov 1995)
Previous versions | rss
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Protein

Cytochrome b-c1 complex subunit 6, mitochondrial

Gene

QCR6

Organism
Saccharomyces cerevisiae (strain ATCC 204508 / S288c) (Baker's yeast)
Status
Reviewed-Annotation score:

Annotation score:5 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>-Experimental evidence at protein leveli <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 ubiquinol-cytochrome c oxidoreductase, a multisubunit transmembrane complex that is part of the mitochondrial electron transport chain which drives oxidative phosphorylation. The respiratory chain contains 3 multisubunit complexes succinate dehydrogenase (complex II, CII), ubiquinol-cytochrome c oxidoreductase (cytochrome b-c1 complex, complex III, CIII) and cytochrome c oxidase (complex IV, CIV), that cooperate to transfer electrons derived from NADH and succinate to molecular oxygen, creating an electrochemical gradient over the inner membrane that drives transmembrane transport and the ATP synthase. The cytochrome b-c1 complex catalyzes electron transfer from ubiquinol to cytochrome c, linking this redox reaction to translocation of protons across the mitochondrial inner membrane, with protons being carried across the membrane as hydrogens on the quinol. In the process called Q cycle, 2 protons are consumed from the matrix, 4 protons are released into the intermembrane space and 2 electrons are passed to cytochrome c.

1 Publication

Miscellaneous

Present with 4490 molecules/cell in log phase SD medium.1 Publication

<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 - Biological processi

Complete GO annotation on QuickGO ...

<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

Biological processElectron transport, Respiratory chain, Transport

Enzyme and pathway databases

Reactome - a knowledgebase of biological pathways and processes

More...Reactomei		R-SCE-611105, Respiratory electron transport

<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%5Fand%5Ftaxonomy%5Fsection">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 b-c1 complex subunit 6, mitochondrial
Alternative name(s):
Complex III subunit 6
Complex III subunit VI
Cytochrome c1 non-heme 17 kDa protein
Mitochondrial hinge protein
Ubiquinol-cytochrome c oxidoreductase subunit 6
Ubiquinol-cytochrome c reductase 17 kDa protein
<p>This subsection of the <a href="http://www.uniprot.org/help/names%5Fand%5Ftaxonomy%5Fsection">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:QCR6
Synonyms:UCR6
Ordered Locus Names:YFR033C
<p>This subsection of the <a href="http://www.uniprot.org/help/names%5Fand%5Ftaxonomy%5Fsection">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>OrganismiSaccharomyces cerevisiae (strain ATCC 204508 / S288c) (Baker's yeast)
<p>This subsection of the <a href="http://www.uniprot.org/help/names%5Fand%5Ftaxonomy%5Fsection">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 identifieri559292 [NCBI]
<p>This subsection of the <a href="http://www.uniprot.org/help/names%5Fand%5Ftaxonomy%5Fsection">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 lineageiEukaryota › Fungi › Dikarya › Ascomycota › Saccharomycotina › Saccharomycetes › Saccharomycetales › Saccharomycetaceae › Saccharomyces ›
<p>This subsection of the <a href="http://www.uniprot.org/help/names%5Fand%5Ftaxonomy%5Fsection">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
  • UP000002311 <p>A UniProt <a href="http://www.uniprot.org/manual/proteomes%5Fmanual">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 VI

Organism-specific databases

Saccharomyces Genome Database

More...SGDi		S000001929, QCR6

Eukaryotic Pathogen, Vector and Host Database Resources

More...VEuPathDBi		FungiDB:YFR033C

<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

Keywords - Cellular componenti

Membrane, Mitochondrion, Mitochondrion inner membrane

<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 or proteolytic cleavage.<p><a href='/help/chain' target='_top'>More...</a></p>ChainiPRO_00001935421 – 147Cytochrome b-c1 complex subunit 6, mitochondrialAdd BLAST147

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 bondi101 ↔ 1236 Publications

Keywords - PTMi

Disulfide bond

Proteomic databases

MaxQB - The MaxQuant DataBase

More...MaxQBi		P00127

PaxDb, a database of protein abundance averages across all three domains of life

More...PaxDbi		P00127

PRoteomics IDEntifications database

More...PRIDEi		P00127

PTM databases

CarbonylDB database of protein carbonylation sites

More...CarbonylDBi		P00127

<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%5Fsection">'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%5Fsection">'Function'</a> section).<p><a href='/help/subunit_structure' target='_top'>More...</a></p>Subunit structurei

Component of the ubiquinol-cytochrome c oxidoreductase (cytochrome b-c1 complex, complex III, CIII), a multisubunit enzyme composed of 10 subunits. The complex is composed of 3 respiratory subunits cytochrome b (COB), cytochrome c1 (CYT1) and Rieske protein (RIP1), 2 core protein subunits COR1 and QCR2, and 5 low-molecular weight protein subunits QCR6, QCR7, QCR8, QCR9 and QCR10 (PubMed:10873857, PubMed:11880631, PubMed:18390544, PubMed:30598554). The complex exists as an obligatory dimer and forms supercomplexes (SCs) in the inner mitochondrial membrane with a monomer or a dimer of cytochrome c oxidase (complex IV, CIV), resulting in 2 different assemblies (supercomplexes III2IV and III2IV2) (PubMed:10775262, PubMed:10764779, PubMed:30598556, PubMed:30598554). QCR6 interacts with COX5A at the CIII-CIV interface (PubMed:30598554).

7 Publications

Protein-protein interaction databases

The Biological General Repository for Interaction Datasets (BioGRID)

More...BioGRIDi		31190, 112 interactors

ComplexPortal: manually curated resource of macromolecular complexes

More...ComplexPortali		CPX-567, Mitochondrial respiratory chain complex III

Database of interacting proteins

More...DIPi		DIP-1621N

Protein interaction database and analysis system

More...IntActi		P00127, 5 interactors

Molecular INTeraction database

More...MINTi		P00127

STRING: functional protein association networks

More...STRINGi		4932.YFR033C

Miscellaneous databases

RNAct, Protein-RNA interaction predictions for model organisms.

More...RNActi		P00127, protein

<p>This section provides information on the tertiary and secondary structure of a protein.<p><a href='/help/structure_section' target='_top'>More...</a></p>Structurei

Secondary structure

1147
Legend: HelixTurnBeta strandPDB Structure known for this area
Show more details

3D structure databases

SWISS-MODEL Repository - a database of annotated 3D protein structure models

More...SMRi		P00127

Database of comparative protein structure models

More...ModBasei		Search...

Protein Data Bank in Europe - Knowledge Base

More...PDBe-KBi		Search...

Miscellaneous databases

Relative evolutionary importance of amino acids within a protein sequence

More...EvolutionaryTracei		P00127

<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

Region

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the 'Family and Domains' section describes a region of interest that cannot be described in other subsections.<p><a href='/help/region' target='_top'>More...</a></p>Regioni25 – 89DisorderedSequence analysisAdd BLAST65

Compositional bias

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the 'Family and Domains' section describes the position of regions of compositional bias within the protein and the particular type of amino acids that are over-represented within those regions.<p><a href='/help/compbias' target='_top'>More...</a></p>Compositional biasi26 – 40Basic and acidic residuesSequence analysisAdd BLAST15
Compositional biasi41 – 77Acidic residuesSequence analysisAdd BLAST37

<p>This subsection of the 'Family and domains' section provides information about the sequence similarity with other proteins.<p><a href='/help/sequence_similarities' target='_top'>More...</a></p>Sequence similaritiesi

Belongs to the UQCRH/QCR6 family.Curated

Phylogenomic databases

evolutionary genealogy of genes: Non-supervised Orthologous Groups

More...eggNOGi		KOG4763, Eukaryota

Ensembl GeneTree

More...GeneTreei		ENSGT00390000003860

The HOGENOM Database of Homologous Genes from Fully Sequenced Organisms

More...HOGENOMi		CLU_115913_0_1_1

InParanoid: Eukaryotic Ortholog Groups

More...InParanoidi		P00127

Identification of Orthologs from Complete Genome Data

More...OMAi		CKNSPQC

Family and domain databases

Database of protein disorder

More...DisProti		DP00853

Gene3D Structural and Functional Annotation of Protein Families

More...Gene3Di		1.10.287.20, 1 hit

Integrated resource of protein families, domains and functional sites

More...InterProi		View protein in InterPro
IPR023184, Ubol_cytC_Rdtase_hinge_dom
IPR036811, Ubol_cytC_Rdtase_hinge_dom_sf

Pfam protein domain database

More...Pfami		View protein in Pfam
PF02320, UCR_hinge, 1 hit

Superfamily database of structural and functional annotation

More...SUPFAMi		SSF81531, SSF81531, 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%5Flength">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%5Fsection">Sequence</a> section indicates if the <a href="http://www.uniprot.org/help/canonical%5Fand%5Fisoforms">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.

P00127-1 [UniParc]FASTAAdd to basket
« Hide
        10         20         30         40         50
MGMLELVGEY WEQLKITVVP VVAAAEDDDN EQHEEKAAEG EEKEEENGDE 
        60         70         80         90        100
DEDEDEDEDD DDDDDEDEEE EEEVTDQLED LREHFKNTEE GKALVHHYEE 
       110        120        130        140 
CAERVKIQQQ QPGYADLEHK EDCVEEFFHL QHYLDTATAP RLFDKLK
Length:147
Mass (Da):17,257
Last modified:November 1, 1995 - v2
<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:i1488B9C0EB57BE8F
GO

Experimental Info

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the 'Sequence' section reports difference(s) between the canonical sequence (displayed by default in the entry) and the different sequence submissions merged in the entry. These various submissions may originate from different sequencing projects, different types of experiments, or different biological samples. Sequence conflicts are usually of unknown origin.<p><a href='/help/conflict' target='_top'>More...</a></p>Sequence conflicti2G → D in CAA25220 (PubMed:6329732).Curated1

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
X00551 Genomic DNA Translation: CAA25220.1
D50617 Genomic DNA Translation: BAA09272.1
BK006940 Genomic DNA Translation: DAA12476.1

Protein sequence database of the Protein Information Resource

More...PIRi		S56288, RDBYUC

NCBI Reference Sequences

More...RefSeqi		NP_116691.3, NM_001179998.3

Genome annotation databases

Ensembl fungal genome annotation project

More...EnsemblFungii		YFR033C_mRNA; YFR033C; YFR033C

Database of genes from NCBI RefSeq genomes

More...GeneIDi		850593

KEGG: Kyoto Encyclopedia of Genes and Genomes

More...KEGGi		sce:YFR033C

<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
X00551 Genomic DNA Translation: CAA25220.1
D50617 Genomic DNA Translation: BAA09272.1
BK006940 Genomic DNA Translation: DAA12476.1
PIRiS56288, RDBYUC
RefSeqiNP_116691.3, NM_001179998.3

3D structure databases

Select the link destinations:

Protein Data Bank Europe

More...PDBei

Protein Data Bank RCSB

More...RCSB PDBi

Protein Data Bank Japan

More...PDBji
Links Updated
PDB entryMethodResolution (Å)ChainPositionsPDBsum
1EZVX-ray2.30H74-147[»]
1KB9X-ray2.30F74-147[»]
1KYOX-ray2.97F/Q75-147[»]
1P84X-ray2.50F74-147[»]
2IBZX-ray2.30H74-147[»]
3CX5X-ray1.90F/Q2-147[»]
3CXHX-ray2.50F/Q2-147[»]
4PD4X-ray3.04F74-147[»]
6GIQelectron microscopy3.23F/Q1-147[»]
6HU9electron microscopy3.35F/Q1-147[»]
6T0Belectron microscopy2.80F/Q1-147[»]
6T15electron microscopy3.29F/Q1-147[»]
SMRiP00127
ModBaseiSearch...
PDBe-KBiSearch...

Protein-protein interaction databases

BioGRIDi31190, 112 interactors
ComplexPortaliCPX-567, Mitochondrial respiratory chain complex III
DIPiDIP-1621N
IntActiP00127, 5 interactors
MINTiP00127
STRINGi4932.YFR033C

PTM databases

CarbonylDBiP00127

Proteomic databases

MaxQBiP00127
PaxDbiP00127
PRIDEiP00127

Genome annotation databases

EnsemblFungiiYFR033C_mRNA; YFR033C; YFR033C
GeneIDi850593
KEGGisce:YFR033C

Organism-specific databases

SGDiS000001929, QCR6
VEuPathDBiFungiDB:YFR033C

Phylogenomic databases

eggNOGiKOG4763, Eukaryota
GeneTreeiENSGT00390000003860
HOGENOMiCLU_115913_0_1_1
InParanoidiP00127
OMAiCKNSPQC

Enzyme and pathway databases

ReactomeiR-SCE-611105, Respiratory electron transport

Miscellaneous databases

EvolutionaryTraceiP00127

Protein Ontology

More...PROi		PR:P00127
RNActiP00127, protein

Family and domain databases

DisProtiDP00853
Gene3Di1.10.287.20, 1 hit
InterProiView protein in InterPro
IPR023184, Ubol_cytC_Rdtase_hinge_dom
IPR036811, Ubol_cytC_Rdtase_hinge_dom_sf
PfamiView protein in Pfam
PF02320, UCR_hinge, 1 hit
SUPFAMiSSF81531, SSF81531, 1 hit

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 nameiQCR6_YEAST
<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: P00127
Secondary accession number(s): D6VTR6
<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%5Fand%5Fisoforms">canonical sequence</a> are also displayed.<p><a href='/help/entry_history' target='_top'>More...</a></p>Entry historyiIntegrated into UniProtKB/Swiss-Prot: July 21, 1986
Last sequence update: November 1, 1995
Last modified: February 23, 2022
This is version 193 of the entry and version 2 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 programFungal 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

3D-structure, Reference proteome

Documents

  1. Yeast
    Yeast (Saccharomyces cerevisiae): entries, gene names and cross-references to SGD
  2. Yeast chromosome VI
    Yeast (Saccharomyces cerevisiae) chromosome VI: entries and gene names
  3. PDB cross-references
    Index of Protein Data Bank (PDB) cross-references
  4. SIMILARITY comments
    Index of protein domains and families
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