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Protein

Cytochrome c oxidase subunit 1

Gene

ctaD

Organism
Rhizobium leguminosarum
Status
Reviewed-Annotation score: Annotation score: 4 out of 5-Experimental evidence at transcript leveli

Functioni

Cytochrome c oxidase is the component of the respiratory chain that catalyzes the reduction of oxygen to water. Subunits 1-3 form the functional core of the enzyme complex. CO I is the catalytic subunit of the enzyme. Electrons originating in cytochrome c are transferred via the copper A center of subunit 2 and heme A of subunit 1 to the bimetallic center formed by heme A3 and copper B.

Catalytic activityi

4 ferrocytochrome c + O2 + 4 H+ = 4 ferricytochrome c + 2 H2O.

Pathway: oxidative phosphorylation

This protein is involved in the pathway oxidative phosphorylation, which is part of Energy metabolism.
View all proteins of this organism that are known to be involved in the pathway oxidative phosphorylation and in Energy metabolism.

Sites

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Metal bindingi82 – 821Iron (heme A axial ligand)Curated
Metal bindingi265 – 2651Copper BCurated
Metal bindingi269 – 2691Copper BCurated
Metal bindingi314 – 3141Copper BCurated
Metal bindingi315 – 3151Copper BCurated
Metal bindingi400 – 4001Iron (heme A3 axial ligand)Curated
Metal bindingi402 – 4021Iron (heme A axial ligand)Curated

GO - Molecular functioni

GO - Biological processi

Complete GO annotation...

Keywords - Molecular functioni

Oxidoreductase

Keywords - Biological processi

Electron transport, Respiratory chain, Transport

Keywords - Ligandi

Copper, Heme, Iron, Metal-binding

Enzyme and pathway databases

UniPathwayiUPA00705.

Names & Taxonomyi

Protein namesi
Recommended name:
Cytochrome c oxidase subunit 1 (EC:1.9.3.1)
Alternative name(s):
Cytochrome aa3 subunit 1
Cytochrome c oxidase polypeptide I
Gene namesi
Name:ctaD
Synonyms:coxA
OrganismiRhizobium leguminosarum
Taxonomic identifieri384 [NCBI]
Taxonomic lineageiBacteriaProteobacteriaAlphaproteobacteriaRhizobialesRhizobiaceaeRhizobium/Agrobacterium groupRhizobium

Subcellular locationi

Topology

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Transmembranei37 – 5721HelicalSequence AnalysisAdd
BLAST
Transmembranei84 – 10421HelicalSequence AnalysisAdd
BLAST
Transmembranei121 – 14121HelicalSequence AnalysisAdd
BLAST
Transmembranei170 – 19021HelicalSequence AnalysisAdd
BLAST
Transmembranei208 – 22821HelicalSequence AnalysisAdd
BLAST
Transmembranei259 – 27921HelicalSequence AnalysisAdd
BLAST
Transmembranei291 – 31121HelicalSequence AnalysisAdd
BLAST
Transmembranei329 – 34921HelicalSequence AnalysisAdd
BLAST
Transmembranei362 – 38221HelicalSequence AnalysisAdd
BLAST
Transmembranei401 – 42121HelicalSequence AnalysisAdd
BLAST
Transmembranei438 – 45821HelicalSequence AnalysisAdd
BLAST
Transmembranei476 – 49621HelicalSequence AnalysisAdd
BLAST

GO - Cellular componenti

Complete GO annotation...

Keywords - Cellular componenti

Cell membrane, Membrane

PTM / Processingi

Molecule processing

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Chaini1 – 538538Cytochrome c oxidase subunit 1PRO_0000183447Add
BLAST

Amino acid modifications

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Cross-linki265 ↔ 2691'-histidyl-3'-tyrosine (His-Tyr)By similarity

Expressioni

Developmental stagei

Free in soil (not as bacteroid).

Structurei

3D structure databases

ProteinModelPortaliQ08855.
SMRiQ08855. Positions 24-538.
ModBaseiSearch...
MobiDBiSearch...

Family & Domainsi

Sequence similaritiesi

Keywords - Domaini

Transmembrane, Transmembrane helix

Family and domain databases

Gene3Di1.20.210.10. 1 hit.
InterProiIPR000883. COX1.
IPR023615. Cyt_c_Oxase_su1_BS.
IPR023616. Cyt_c_Oxase_su1_dom.
IPR014241. Cyt_c_oxidase_su1_bac.
[Graphical view]
PANTHERiPTHR10422. PTHR10422. 1 hit.
PfamiPF00115. COX1. 1 hit.
[Graphical view]
PRINTSiPR01165. CYCOXIDASEI.
SUPFAMiSSF81442. SSF81442. 1 hit.
TIGRFAMsiTIGR02891. CtaD_CoxA. 1 hit.
PROSITEiPS50855. COX1. 1 hit.
PS00077. COX1_CUB. 1 hit.
[Graphical view]

Sequencei

Sequence statusi: Complete.

Q08855-1 [UniParc]FASTAAdd to basket

« Hide

        10         20         30         40         50
MATSAAAHGE HAEDHGHDEH AHPTGWRRST NHKDIGTLYL IFAIIAGVIG
60 70 80 90 100
AAMSLAIRAE LMYPGVEYFH NTHLYNVFVT SHGVIMIFFM VMPAMIGGFG
110 120 130 140 150
NWFLPLMIGA PDMAFPRMNN ISFWLLPASF GLLLMSTFVE GEPGANGAGA
160 170 180 190 200
GWTMYVPLSS SGHPGPAVDL AIFSLHIAGA SSILGAINFI TTILNMRAPG
210 220 230 240 250
MTLHKMPLFA WSVLITAFLL LLSLPVLAGA ITMLLTDRNF GTTFFAPEGG
260 270 280 290 300
GDPLLYQHLF WFFGHPEVYI LILPGFGMIS HIISTFSRKP VFGYIGMVYA
310 320 330 340 350
MAAIGGLGFV VWAHHMYIVG MDLDTEAYFV SATMIIAVPT GIKIFSWIAT
360 370 380 390 400
MWGGSIEFAT PMLWALAFIF LFTVGGVTGV VLANASLDRV LHDTYYVVAH
410 420 430 440 450
FHYVLSLGAI FAIFAGWYYW FPKMSGYMYN ETLAEAHFWL IFIGVNLIFF
460 470 480 490 500
PEHFLGISGM PRRYIDYPDA FAGWNLVSSI GSYISGFSVL LFIYCVYDAF
510 520 530
AKNVPVGDNP WGAGATTLEW TLPSPPPVHE FEVLPRVE
Length:538
Mass (Da):59,133
Last modified:February 1, 1996 - v1
Checksum:i740C8FE6C902D9BF
GO

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
X74341 Genomic DNA. Translation: CAA52388.1.
PIRiS36424.

Cross-referencesi

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
X74341 Genomic DNA. Translation: CAA52388.1.
PIRiS36424.

3D structure databases

ProteinModelPortaliQ08855.
SMRiQ08855. Positions 24-538.
ModBaseiSearch...
MobiDBiSearch...

Protocols and materials databases

Structural Biology KnowledgebaseSearch...

Enzyme and pathway databases

UniPathwayiUPA00705.

Family and domain databases

Gene3Di1.20.210.10. 1 hit.
InterProiIPR000883. COX1.
IPR023615. Cyt_c_Oxase_su1_BS.
IPR023616. Cyt_c_Oxase_su1_dom.
IPR014241. Cyt_c_oxidase_su1_bac.
[Graphical view]
PANTHERiPTHR10422. PTHR10422. 1 hit.
PfamiPF00115. COX1. 1 hit.
[Graphical view]
PRINTSiPR01165. CYCOXIDASEI.
SUPFAMiSSF81442. SSF81442. 1 hit.
TIGRFAMsiTIGR02891. CtaD_CoxA. 1 hit.
PROSITEiPS50855. COX1. 1 hit.
PS00077. COX1_CUB. 1 hit.
[Graphical view]
ProtoNetiSearch...

Publicationsi

  1. "Cytochrome aa3 gene regulation in members of the family Rhizobiaceae: comparison of copper and oxygen effects in Bradyrhizobium japonicum and Rhizobium tropici."
    Gabel C., Bittinger M.A., Maier R.J.
    Appl. Environ. Microbiol. 60:141-148(1994) [PubMed] [Europe PMC] [Abstract]
    Cited for: NUCLEOTIDE SEQUENCE [GENOMIC DNA].

Entry informationi

Entry nameiCOX1_RHILE
AccessioniPrimary (citable) accession number: Q08855
Entry historyi
Integrated into UniProtKB/Swiss-Prot: February 1, 1996
Last sequence update: February 1, 1996
Last modified: January 7, 2015
This is version 92 of the entry and version 1 of the sequence. [Complete history]
Entry statusiReviewed (UniProtKB/Swiss-Prot)
Annotation programProkaryotic Protein Annotation Program

Miscellaneousi

Documents

  1. PATHWAY comments
    Index of metabolic and biosynthesis pathways
  2. SIMILARITY comments
    Index of protein domains and families

External Data

Dasty 3

Similar proteinsi

Links to similar proteins from the UniProt Reference Clusters (UniRef) at 100%, 90% and 50% sequence identity:
100%UniRef100 combines identical sequences and sub-fragments with 11 or more residues from any organism into Uniref entry.
90%UniRef90 is built by clustering UniRef100 sequences that have at least 90% sequence identity to, and 80% overlap with, the longest sequence (a.k.a seed sequence).
50%UniRef50 is built by clustering UniRef90 seed sequences that have at least 50% sequence identity to, and 80% overlap with, the longest sequence in the cluster.