Skip Header

You are using a version of browser that may not display all the features of this website. Please consider upgrading your browser.
Protein

Cytochrome c-550

Gene

psbV

Organism
Cyanidium caldarium (Red alga)
Status
Reviewed-Annotation score: Annotation score: 4 out of 5-Experimental evidence at protein leveli

Functioni

Low-potential cytochrome c that plays a role in the oxygen-evolving complex of photosystem II (PSII). Unlike Synechococcus vulcanus it does not bind by itself to PSII, but requires all extrinsic members of the OEC.

Cofactori

hemeUniRule annotationNote: Binds 1 heme group covalently per subunit.UniRule annotation

Sites

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Binding sitei50Heme (covalent)UniRule annotation1
Binding sitei53Heme (covalent)UniRule annotation1
Metal bindingi54Iron (heme axial ligand)UniRule annotation1
Metal bindingi105Iron (heme axial ligand)UniRule annotation1

GO - Molecular functioni

GO - Biological processi

Keywordsi

Biological processElectron transport, Photosynthesis, Transport
LigandHeme, Iron, Metal-binding

Names & Taxonomyi

Protein namesi
Recommended name:
Cytochrome c-550UniRule annotation
Alternative name(s):
Cytochrome c550UniRule annotation
Gene namesi
Name:psbVUniRule annotation
Encoded oniPlastid; Chloroplast
OrganismiCyanidium caldarium (Red alga)
Taxonomic identifieri2771 [NCBI]
Taxonomic lineageiEukaryotaRhodophytaBangiophyceaeCyanidialesCyanidiaceaeCyanidium

Subcellular locationi

  • Plastidchloroplast thylakoid membrane UniRule annotation1 Publication; Peripheral membrane protein UniRule annotation1 Publication; Lumenal side UniRule annotation1 Publication

  • Note: Associated with photosystem II at the lumenal side of the thylakoid membrane.

GO - Cellular componenti

Keywords - Cellular componenti

Chloroplast, Membrane, Photosystem II, Plastid, Thylakoid

PTM / Processingi

Molecule processing

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Signal peptidei1 – 20UniRule annotation1 PublicationAdd BLAST20
ChainiPRO_000029561221 – 155Cytochrome c-550Add BLAST135

Interactioni

Subunit structurei

The oxygen-evolving complex in red algae is composed of psbO (OEC33), psbQ', cytochrome c-550 and psbU.1 Publication

Structurei

3D structure databases

Select the link destinations:
PDBei
RCSB PDBi
PDBji
Links Updated
PDB entryMethodResolution (Å)ChainPositionsPDBsum
4YUUX-ray2.77V1/V2/v1/v21-155[»]
ProteinModelPortaliQ76FB0.
SMRiQ76FB0.
ModBaseiSearch...
MobiDBiSearch...

Family & Domainsi

Sequence similaritiesi

Belongs to the cytochrome c family. PsbV subfamily.UniRule annotation

Keywords - Domaini

Signal

Family and domain databases

Gene3Di1.10.760.10. 1 hit.
HAMAPiMF_01378. PSII_Cyt550. 1 hit.
InterProiView protein in InterPro
IPR009056. Cyt_c-like_dom.
IPR029490. Cytochrom_C550.
IPR016003. PSII_cyt_c550.
IPR017851. PSII_PsbV_cyt_c550.
PfamiView protein in Pfam
PF14495. Cytochrom_C550. 1 hit.
PIRSFiPIRSF005890. Phot_II_cyt_c550. 1 hit.
SUPFAMiSSF46626. SSF46626. 1 hit.
TIGRFAMsiTIGR03045. PS_II_C550. 1 hit.
PROSITEiView protein in PROSITE
PS51007. CYTC. 1 hit.

Sequencei

Sequence statusi: Complete.

Sequence processingi: The displayed sequence is further processed into a mature form.

Q76FB0-1 [UniParc]FASTAAdd to basket

« Hide

        10         20         30         40         50
MFVKMIGWLV LFLFAHQTWA IEVAKDTNGG ILNIAPEQLK RGKRLFNSHC
60 70 80 90 100
SSCHVGGITK TNPNIGLDLE SLSLATPPRN NLDALVDYMK NPTTYDGSES
110 120 130 140 150
IAQIHPSIAS SDIFPKMRDL SEDDLYAIAA HILTQPQIQA EKWGGGKIYY

TKRSM
Length:155
Mass (Da):17,221
Last modified:July 5, 2004 - v1
Checksum:i9704B6B2335B1571
GO

Experimental Info

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Sequence conflicti52S → D AA sequence (PubMed:8534673).Curated1

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
AB105371 mRNA. Translation: BAC84949.1.

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.

Entry informationi

Entry nameiC550B_CYACA
AccessioniPrimary (citable) accession number: Q76FB0
Entry historyiIntegrated into UniProtKB/Swiss-Prot: July 24, 2007
Last sequence update: July 5, 2004
Last modified: March 15, 2017
This is version 54 of the entry and version 1 of the sequence. See complete history.
Entry statusiReviewed (UniProtKB/Swiss-Prot)

Miscellaneousi

Keywords - Technical termi

3D-structure, Direct protein sequencing

Documents

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