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Protein

Photosystem I iron-sulfur center

Gene

psaC

Organism
Oryza sativa subsp. indica (Rice)
Status
Reviewed-Annotation score: Annotation score: 3 out of 5-Protein inferred from homologyi

Functioni

Apoprotein for the two 4Fe-4S centers FA and FB of photosystem I (PSI); essential for photochemical activity. FB is the terminal electron acceptor of PSI, donating electrons to ferredoxin. The C-terminus interacts with PsaA/B/D and helps assemble the protein into the PSI complex. Required for binding of PsaD and PsaE to PSI. PSI is a plastocyanin-ferredoxin oxidoreductase, converting photonic excitation into a charge separation, which transfers an electron from the donor P700 chlorophyll pair to the spectroscopically characterized acceptors A0, A1, FX, FA and FB in turn.UniRule annotation

Catalytic activityi

Reduced plastocyanin + oxidized ferredoxin + light = oxidized plastocyanin + reduced ferredoxin.UniRule annotation

Cofactori

[4Fe-4S] clusterUniRule annotationNote: Binds 2 [4Fe-4S] clusters. Cluster 2 is most probably the spectroscopically characterized electron acceptor FA and cluster 1 is most probably FB.UniRule annotation

Sites

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Metal bindingi11 – 111Iron-sulfur 1 (4Fe-4S)UniRule annotation
Metal bindingi14 – 141Iron-sulfur 1 (4Fe-4S)UniRule annotation
Metal bindingi17 – 171Iron-sulfur 1 (4Fe-4S)UniRule annotation
Metal bindingi21 – 211Iron-sulfur 2 (4Fe-4S)UniRule annotation
Metal bindingi48 – 481Iron-sulfur 2 (4Fe-4S)UniRule annotation
Metal bindingi51 – 511Iron-sulfur 2 (4Fe-4S)UniRule annotation
Metal bindingi54 – 541Iron-sulfur 2 (4Fe-4S)UniRule annotation
Metal bindingi58 – 581Iron-sulfur 1 (4Fe-4S)UniRule annotation

GO - Molecular functioni

GO - Biological processi

Complete GO annotation...

Keywords - Molecular functioni

Oxidoreductase

Keywords - Biological processi

Electron transport, Photosynthesis, Transport

Keywords - Ligandi

4Fe-4S, Iron, Iron-sulfur, Metal-binding

Names & Taxonomyi

Protein namesi
Recommended name:
Photosystem I iron-sulfur centerUniRule annotation (EC:1.97.1.12UniRule annotation)
Alternative name(s):
9 kDa polypeptideUniRule annotation
PSI-CUniRule annotation
Photosystem I subunit VIIUniRule annotation
PsaCUniRule annotation
Gene namesi
Name:psaCUniRule annotation
ORF Names:9311169
Encoded oniPlastid; Chloroplast
OrganismiOryza sativa subsp. indica (Rice)
Taxonomic identifieri39946 [NCBI]
Taxonomic lineageiEukaryotaViridiplantaeStreptophytaEmbryophytaTracheophytaSpermatophytaMagnoliophytaLiliopsidaPoalesPoaceaeBOP cladeOryzoideaeOryzeaeOryzinaeOryza
Proteomesi
  • UP000007015 Componenti: Chloroplast

Subcellular locationi

  • Plastidchloroplast thylakoid membrane UniRule annotation; Peripheral membrane protein UniRule annotation; Stromal side UniRule annotation

GO - Cellular componenti

  • chloroplast thylakoid membrane Source: UniProtKB-SubCell
  • photosystem I Source: UniProtKB-KW
  • plastid Source: Gramene
Complete GO annotation...

Keywords - Cellular componenti

Chloroplast, Membrane, Photosystem I, Plastid, Thylakoid

PTM / Processingi

Molecule processing

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Initiator methionineiRemovedBy similarity
Chaini2 – 8180Photosystem I iron-sulfur centerPRO_0000288986Add
BLAST

Proteomic databases

PRIDEiP0C360.

Interactioni

Subunit structurei

The eukaryotic PSI reaction center is composed of at least 11 subunits.UniRule annotation

Structurei

3D structure databases

ProteinModelPortaliP0C360.
ModBaseiSearch...
MobiDBiSearch...

Family & Domainsi

Domains and Repeats

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Domaini2 – 31304Fe-4S ferredoxin-type 1UniRule annotationAdd
BLAST
Domaini39 – 68304Fe-4S ferredoxin-type 2UniRule annotationAdd
BLAST

Sequence similaritiesi

Contains 2 4Fe-4S ferredoxin-type domains.UniRule annotation

Keywords - Domaini

Repeat

Family and domain databases

HAMAPiMF_01303. PSI_PsaC.
InterProiIPR017896. 4Fe4S_Fe-S-bd.
IPR017900. 4Fe4S_Fe_S_CS.
IPR017491. PSI_PsaC.
[Graphical view]
TIGRFAMsiTIGR03048. PS_I_psaC. 1 hit.
PROSITEiPS00198. 4FE4S_FER_1. 2 hits.
PS51379. 4FE4S_FER_2. 2 hits.
[Graphical view]

Sequencei

Sequence statusi: Complete.

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

P0C360-1 [UniParc]FASTAAdd to basket

« Hide

        10         20         30         40         50
MSHSVKIYDT CIGCTQCVRA CPTDVLEMIP WDGCKAKQIA SAPRTEDCVG
60 70 80
CKRCESACPT DFLSVRVYLG PETTRSMALS Y
Length:81
Mass (Da):8,899
Last modified:May 29, 2007 - v1
Checksum:i681F63DC8FC603BF
GO

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
AY522329 Genomic DNA. Translation: AAS46093.1.
RefSeqiYP_009161420.1. NC_027678.1.
YP_654253.1. NC_008155.1.

Genome annotation databases

GeneIDi25193427.
4126910.

Cross-referencesi

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
AY522329 Genomic DNA. Translation: AAS46093.1.
RefSeqiYP_009161420.1. NC_027678.1.
YP_654253.1. NC_008155.1.

3D structure databases

ProteinModelPortaliP0C360.
ModBaseiSearch...
MobiDBiSearch...

Proteomic databases

PRIDEiP0C360.

Protocols and materials databases

Structural Biology KnowledgebaseSearch...

Genome annotation databases

GeneIDi25193427.
4126910.

Family and domain databases

HAMAPiMF_01303. PSI_PsaC.
InterProiIPR017896. 4Fe4S_Fe-S-bd.
IPR017900. 4Fe4S_Fe_S_CS.
IPR017491. PSI_PsaC.
[Graphical view]
TIGRFAMsiTIGR03048. PS_I_psaC. 1 hit.
PROSITEiPS00198. 4FE4S_FER_1. 2 hits.
PS51379. 4FE4S_FER_2. 2 hits.
[Graphical view]
ProtoNetiSearch...

Publicationsi

  1. Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
    Strain: cv. 93-11.

Entry informationi

Entry nameiPSAC_ORYSI
AccessioniPrimary (citable) accession number: P0C360
Secondary accession number(s): P10794
, P69414, Q6QXX3, Q6QY36
Entry historyi
Integrated into UniProtKB/Swiss-Prot: May 29, 2007
Last sequence update: May 29, 2007
Last modified: February 17, 2016
This is version 49 of the entry and version 1 of the sequence. [Complete history]
Entry statusiReviewed (UniProtKB/Swiss-Prot)
Annotation programPlant Protein Annotation Program

Miscellaneousi

Keywords - Technical termi

Complete proteome, Reference proteome

Documents

  1. 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.