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Protein

Cytochrome c2

Gene

cycA

Organism
Rhodobacter sphaeroides (Rhodopseudomonas sphaeroides)
Status
Reviewed-Annotation score: Annotation score: 5 out of 5-Experimental evidence at protein leveli

Functioni

Cytochrome c2 is found mainly in purple, non-sulfur, photosynthetic bacteria where it functions as the electron donor to the oxidized bacteriochlorophyll in the photophosphorylation pathway. However, it may also have a role in the respiratory chain and is found in some non-photosynthetic bacteria.

Sites

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Binding sitei15Heme (covalent)1
Binding sitei18Heme (covalent)1
Metal bindingi19Iron (heme axial ligand)1
Metal bindingi100Iron (heme axial ligand)1

GO - Molecular functioni

GO - Biological processi

Complete GO annotation...

Keywords - Biological processi

Electron transport, Photosynthesis, Transport

Keywords - Ligandi

Heme, Iron, Metal-binding

Names & Taxonomyi

Protein namesi
Recommended name:
Cytochrome c2
Short name:
Cyt c2
Gene namesi
Name:cycA
OrganismiRhodobacter sphaeroides (Rhodopseudomonas sphaeroides)
Taxonomic identifieri1063 [NCBI]
Taxonomic lineageiBacteriaProteobacteriaAlphaproteobacteriaRhodobacteralesRhodobacteraceaeRhodobacter

Subcellular locationi

GO - Cellular componenti

Complete GO annotation...

Keywords - Cellular componenti

Periplasm

PTM / Processingi

Molecule processing

Feature keyPosition(s)DescriptionActionsGraphical viewLength
ChainiPRO_00001083461 – 124Cytochrome c2Add BLAST124

Amino acid modifications

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Modified residuei1Pyrrolidone carboxylic acid1

Post-translational modificationi

Binds 1 heme group per subunit.

Keywords - PTMi

Pyrrolidone carboxylic acid

Interactioni

Protein-protein interaction databases

STRINGi272943.RSP_0296.

Structurei

Secondary structure

1124
Legend: HelixTurnBeta strandPDB Structure known for this area
Show more details
Feature keyPosition(s)DescriptionActionsGraphical viewLength
Helixi5 – 11Combined sources7
Helixi12 – 17Combined sources6
Beta strandi20 – 22Combined sources3
Beta strandi28 – 30Combined sources3
Helixi59 – 66Combined sources8
Helixi73 – 81Combined sources9
Helixi83 – 91Combined sources9
Helixi107 – 120Combined sources14

3D structure databases

Select the link destinations:
PDBei
RCSB PDBi
PDBji
Links Updated
PDB entryMethodResolution (Å)ChainPositionsPDBsum
1CXAX-ray2.20A1-124[»]
1CXCX-ray1.60A1-124[»]
1L9BX-ray2.40C1-124[»]
1L9JX-ray3.25C/D1-124[»]
2CXBX-ray1.95A/B1-124[»]
ProteinModelPortaliP0C0X8.
SMRiP0C0X8.
ModBaseiSearch...
MobiDBiSearch...

Miscellaneous databases

EvolutionaryTraceiP0C0X8.

Family & Domainsi

Sequence similaritiesi

Belongs to the cytochrome c family.Curated

Phylogenomic databases

eggNOGiENOG4105KNK. Bacteria.
COG3474. LUCA.

Family and domain databases

Gene3Di1.10.760.10. 1 hit.
InterProiIPR009056. Cyt_c-like_dom.
[Graphical view]
PfamiPF00034. Cytochrom_C. 1 hit.
[Graphical view]
SUPFAMiSSF46626. SSF46626. 1 hit.
PROSITEiPS51007. CYTC. 1 hit.
[Graphical view]

Sequencei

Sequence statusi: Complete.

P0C0X8-1 [UniParc]FASTAAdd to basket

« Hide

        10         20         30         40         50
QEGDPEAGAK AFNQCQTCHV IVDDSGTTIA GRNAKTGPNL YGVVGRTAGT
60 70 80 90 100
QADFKGYGEG MKEAGAKGLA WDEEHFVQYV QDPTKFLKEY TGDAKAKGKM
110 120
TFKLKKEADA HNIWAYLQQV AVRP
Length:124
Mass (Da):13,469
Last modified:January 24, 2006 - v1
Checksum:i79560DEADA7A1758
GO

Mass spectrometryi

Molecular mass is 14069±2.1 Da from positions 1 - 124. Determined by ESI. 1 Publication

Sequence databases

PIRiA38896. CCRF2S.

Cross-referencesi

Sequence databases

PIRiA38896. CCRF2S.

3D structure databases

Select the link destinations:
PDBei
RCSB PDBi
PDBji
Links Updated
PDB entryMethodResolution (Å)ChainPositionsPDBsum
1CXAX-ray2.20A1-124[»]
1CXCX-ray1.60A1-124[»]
1L9BX-ray2.40C1-124[»]
1L9JX-ray3.25C/D1-124[»]
2CXBX-ray1.95A/B1-124[»]
ProteinModelPortaliP0C0X8.
SMRiP0C0X8.
ModBaseiSearch...
MobiDBiSearch...

Protein-protein interaction databases

STRINGi272943.RSP_0296.

Protocols and materials databases

Structural Biology KnowledgebaseSearch...

Phylogenomic databases

eggNOGiENOG4105KNK. Bacteria.
COG3474. LUCA.

Miscellaneous databases

EvolutionaryTraceiP0C0X8.

Family and domain databases

Gene3Di1.10.760.10. 1 hit.
InterProiIPR009056. Cyt_c-like_dom.
[Graphical view]
PfamiPF00034. Cytochrom_C. 1 hit.
[Graphical view]
SUPFAMiSSF46626. SSF46626. 1 hit.
PROSITEiPS51007. CYTC. 1 hit.
[Graphical view]
ProtoNetiSearch...

Entry informationi

Entry nameiCYC2_RHOSH
AccessioniPrimary (citable) accession number: P0C0X8
Secondary accession number(s): P00095
Entry historyi
Integrated into UniProtKB/Swiss-Prot: July 21, 1986
Last sequence update: January 24, 2006
Last modified: November 2, 2016
This is version 54 of the entry and version 1 of the sequence. [Complete history]
Entry statusiReviewed (UniProtKB/Swiss-Prot)
Annotation programProkaryotic Protein Annotation Program

Miscellaneousi

Caution

The sequence shown here has been extracted from PDB entry 1CXA.Curated

Keywords - Technical termi

3D-structure

Documents

  1. PDB cross-references
    Index of Protein Data Bank (PDB) cross-references
  2. SIMILARITY comments
    Index of protein domains and families

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 one 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.