Skip Header

You are using a version of browser that may not display all the features of this website. Please consider upgrading your browser.
The new UniProt website is here! Take me to UniProt BETA

UniProtKB - P31800 (QCR1_BOVIN)

Entry version 166 (25 May 2022)
Sequence version 2 (01 Dec 2000)
Previous versions | rss
Add a publicationFeedback
Protein

Cytochrome b-c1 complex subunit 1, mitochondrial

Gene

UQCRC1

Organism
Bos taurus (Bovine)
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>-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 (By similarity).

The 2 core subunits UQCRC1/QCR1 and UQCRC2/QCR2 are homologous to the 2 mitochondrial-processing peptidase (MPP) subunits beta-MPP and alpha-MPP respectively, and they seem to have preserved their MPP processing properties (PubMed:9694818, PubMed:11073949).

May be involved in the in situ processing of UQCRFS1 into the mature Rieske protein and its mitochondrial targeting sequence (MTS)/subunit 9 when incorporated into complex III (Probable). Seems to play an important role in the maintenance of proper mitochondrial function in nigral dopaminergic neurons (By similarity).

By similarity1 Publication2 Publications

<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

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

BRENDA Comprehensive Enzyme Information System

More...BRENDAi		7.1.1.8, 908

Protein family/group databases

MEROPS protease database

More...MEROPSi		M16.973

<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 1, mitochondrial
Alternative name(s):
Complex III subunit 1
Core protein I
Ubiquinol-cytochrome-c reductase complex core protein 1
<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:UQCRC1
<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>OrganismiBos taurus (Bovine)
<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 identifieri9913 [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 › Metazoa › Chordata › Craniata › Vertebrata › Euteleostomi › Mammalia › Eutheria › Laurasiatheria › Artiodactyla › Ruminantia › Pecora › Bovidae › Bovinae › Bos
<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
  • UP000009136 <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: Unplaced

<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 transit peptide.<p><a href='/help/transit' target='_top'>More...</a></p>Transit peptidei1 – 34Mitochondrion1 PublicationAdd BLAST34
<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_000002678535 – 480Cytochrome b-c1 complex subunit 1, mitochondrialAdd BLAST446

Amino acid modifications

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the 'PTM / Processing' section specifies the position and type of each modified residue excluding <a href="http://www.uniprot.org/manual/lipid">lipids</a>, <a href="http://www.uniprot.org/manual/carbohyd">glycans</a> and <a href="http://www.uniprot.org/manual/crosslnk">protein cross-links</a>.<p><a href='/help/mod_res' target='_top'>More...</a></p>Modified residuei111N6-acetyllysineBy similarity1
Modified residuei138N6-acetyllysineBy similarity1
Modified residuei163N6-acetyllysine; alternateBy similarity1
Modified residuei163N6-succinyllysine; alternateBy similarity1
Modified residuei212PhosphoserineBy similarity1
Modified residuei248N6-acetyllysineBy similarity1

Keywords - PTMi

Acetylation, Phosphoprotein

Proteomic databases

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

More...PaxDbi		P31800

PeptideAtlas

More...PeptideAtlasi		P31800

PRoteomics IDEntifications database

More...PRIDEi		P31800

<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 11 subunits. The complex is composed of 3 respiratory subunits cytochrome b, cytochrome c1 and Rieske protein UQCRFS1, 2 core protein subunits UQCRC1/QCR1 and UQCRC2/QCR2, and 6 low-molecular weight protein subunits UQCRH/QCR6, UQCRB/QCR7, UQCRQ/QCR8, UQCR10/QCR9, UQCR11/QCR10 and subunit 9, the cleavage product of Rieske protein UQCRFS1 (PubMed:9651245). The complex exists as an obligatory dimer and forms supercomplexes (SCs) in the inner mitochondrial membrane with NADH-ubiquinone oxidoreductase (complex I, CI) and cytochrome c oxidase (complex IV, CIV), resulting in different assemblies (supercomplex SCI1III2IV1 and megacomplex MCI2III2IV2) (PubMed:27830641).

Interacts with BRAWNIN (By similarity).

By similarity2 Publications

Protein-protein interaction databases

CORUM comprehensive resource of mammalian protein complexes

More...CORUMi		P31800

Database of interacting proteins

More...DIPi		DIP-1105N

Protein interaction database and analysis system

More...IntActi		P31800, 3 interactors

STRING: functional protein association networks

More...STRINGi		9913.ENSBTAP00000025422

<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

1480
Legend: HelixTurnBeta strandPDB Structure known for this area
Show more details

3D structure databases

AlphaFold Protein Structure Database

More...AlphaFoldDBi		P31800

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

More...SMRi		P31800

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		P31800

<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

<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 peptidase M16 family. UQCRC1/QCR1 subfamily.Curated

Keywords - Domaini

Transit peptide

Phylogenomic databases

evolutionary genealogy of genes: Non-supervised Orthologous Groups

More...eggNOGi		KOG0960, Eukaryota

InParanoid: Eukaryotic Ortholog Groups

More...InParanoidi		P31800

Database of Orthologous Groups

More...OrthoDBi		638125at2759

Family and domain databases

Integrated resource of protein families, domains and functional sites

More...InterProi		View protein in InterPro
IPR011249, Metalloenz_LuxS/M16
IPR011765, Pept_M16_N
IPR007863, Peptidase_M16_C

Pfam protein domain database

More...Pfami		View protein in Pfam
PF00675, Peptidase_M16, 1 hit
PF05193, Peptidase_M16_C, 1 hit

Superfamily database of structural and functional annotation

More...SUPFAMi		SSF63411, SSF63411, 2 hits

<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.

<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 in its mature form or if it represents the precursor.<p><a href='/help/sequence_processing' target='_top'>More...</a></p>Sequence processingi: The displayed sequence is further processed into a mature form.

P31800-1 [UniParc]FASTAAdd to basket
« Hide
        10         20         30         40         50
MAASAVCRAA GAGTRVLLRT RRSPALLRSS DLRGTATYAQ ALQSVPETQV 
        60         70         80         90        100
SQLDNGLRVA SEQSSQPTCT VGVWIDAGSR YESEKNNGAG YFVEHLAFKG 
       110        120        130        140        150
TKNRPGNALE KEVESMGAHL NAYSTREHTA YYIKALSKDL PKAVELLADI 
       160        170        180        190        200
VQNCSLEDSQ IEKERDVILQ ELQENDTSMR DVVFNYLHAT AFQGTPLAQS 
       210        220        230        240        250
VEGPSENVRK LSRADLTEYL SRHYKAPRMV LAAAGGLEHR QLLDLAQKHF 
       260        270        280        290        300
SGLSGTYDED AVPTLSPCRF TGSQICHRED GLPLAHVAIA VEGPGWAHPD 
       310        320        330        340        350
NVALQVANAI IGHYDCTYGG GAHLSSPLAS IAATNKLCQS FQTFNICYAD 
       360        370        380        390        400
TGLLGAHFVC DHMSIDDMMF VLQGQWMRLC TSATESEVLR GKNLLRNALV 
       410        420        430        440        450
SHLDGTTPVC EDIGRSLLTY GRRIPLAEWE SRIAEVDARV VREVCSKYFY 
       460        470        480
DQCPAVAGFG PIEQLPDYNR IRSGMFWLRF
Length:480
Mass (Da):52,736
Last modified:December 1, 2000 - 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:i4E54DD28C1905392
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
X59692 mRNA Translation: CAA42213.1

Protein sequence database of the Protein Information Resource

More...PIRi		S16220, ZPBOC1

NCBI Reference Sequences

More...RefSeqi		NP_777054.1, NM_174629.2

Genome annotation databases

Database of genes from NCBI RefSeq genomes

More...GeneIDi		282393

KEGG: Kyoto Encyclopedia of Genes and Genomes

More...KEGGi		bta:282393

<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
X59692 mRNA Translation: CAA42213.1
PIRiS16220, ZPBOC1
RefSeqiNP_777054.1, NM_174629.2

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
1BCCX-ray3.16A35-480[»]
1BE3X-ray3.00A35-480[»]
1BGYX-ray3.00A/M35-480[»]
1L0LX-ray2.35A35-480[»]
1L0NX-ray2.60A35-480[»]
1NTKX-ray2.60A35-480[»]
1NTMX-ray2.40A35-480[»]
1NTZX-ray2.60A35-480[»]
1NU1X-ray3.20A35-480[»]
1PP9X-ray2.10A/N35-480[»]
1PPJX-ray2.10A/N35-480[»]
1QCRX-ray2.70A35-480[»]
1SQBX-ray2.69A1-480[»]
1SQPX-ray2.70A1-480[»]
1SQQX-ray3.00A35-480[»]
1SQVX-ray2.85A35-480[»]
1SQXX-ray2.60A35-480[»]
2A06X-ray2.10A/N35-480[»]
2BCCX-ray3.50A35-480[»]
2FYUX-ray2.26A35-480[»]
2YBBelectron microscopy19.00A/a35-480[»]
3BCCX-ray3.70A35-480[»]
4D6TX-ray3.57A/N1-480[»]
4D6UX-ray4.09A1-480[»]
5GPNelectron microscopy5.40A/M35-480[»]
5KLVX-ray2.65A35-480[»]
5LUFelectron microscopy9.10c/l35-480[»]
5NMIX-ray3.50A/N36-479[»]
5OKDX-ray3.10A1-480[»]
6FO0electron microscopy4.10A/N1-480[»]
6FO2electron microscopy4.40A/N1-480[»]
6FO6electron microscopy4.10A/N1-480[»]
6HAWX-ray3.45A36-479[»]
6NHGX-ray2.80A35-480[»]
6XVFX-ray3.50A36-480[»]
6ZFSX-ray3.50A36-479[»]
6ZFTX-ray3.30A37-480[»]
6ZFUX-ray3.50A36-479[»]
AlphaFoldDBiP31800
SMRiP31800
ModBaseiSearch...
PDBe-KBiSearch...

Protein-protein interaction databases

CORUMiP31800
DIPiDIP-1105N
IntActiP31800, 3 interactors
STRINGi9913.ENSBTAP00000025422

Protein family/group databases

MEROPSiM16.973

Proteomic databases

PaxDbiP31800
PeptideAtlasiP31800
PRIDEiP31800

Genome annotation databases

GeneIDi282393
KEGGibta:282393

Organism-specific databases

Comparative Toxicogenomics Database

More...CTDi		7384

Phylogenomic databases

eggNOGiKOG0960, Eukaryota
InParanoidiP31800
OrthoDBi638125at2759

Enzyme and pathway databases

BRENDAi7.1.1.8, 908

Miscellaneous databases

EvolutionaryTraceiP31800

Family and domain databases

InterProiView protein in InterPro
IPR011249, Metalloenz_LuxS/M16
IPR011765, Pept_M16_N
IPR007863, Peptidase_M16_C
PfamiView protein in Pfam
PF00675, Peptidase_M16, 1 hit
PF05193, Peptidase_M16_C, 1 hit
SUPFAMiSSF63411, SSF63411, 2 hits

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 nameiQCR1_BOVIN
<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: P31800
<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 1, 1993
Last sequence update: December 1, 2000
Last modified: May 25, 2022
This is version 166 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 programChordata 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, Direct protein sequencing, Reference proteome

Documents

  1. Peptidase families
    Classification of peptidase families and list of entries
  2. PDB cross-references
    Index of Protein Data Bank (PDB) cross-references
  3. SIMILARITY comments
    Index of protein domains and families
UniProt is an ELIXIR core data resource
Main funding by: National Institutes of Health

We'd like to inform you that we have updated our Privacy Notice to comply with Europe’s new General Data Protection Regulation (GDPR) that applies since 25 May 2018.

Do not show this banner again