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P10793

- PSAC_PEA

UniProt

P10793 - PSAC_PEA

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Protein
Photosystem I iron-sulfur center
Gene
psaC, frxA
Organism
Pisum sativum (Garden pea)
Status
Reviewed - Annotation score: 4 out of 5 - Experimental evidence at protein leveli

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 By similarity.UniRule annotation

Catalytic activityi

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

Cofactori

Binds 2 4Fe-4S clusters. Cluster 2 is most probably the spectroscopically characterized electron acceptor FA and cluster 1 is most probably FB By similarity.

Sites

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

GO - Molecular functioni

  1. 4 iron, 4 sulfur cluster binding Source: UniProtKB-KW
  2. electron carrier activity Source: UniProtKB-HAMAP
  3. metal ion binding Source: UniProtKB-KW
  4. oxidoreductase activity Source: UniProtKB-KW
Complete GO annotation...

GO - Biological processi

  1. photosynthetic electron transport in photosystem I Source: InterPro
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 center (EC:1.97.1.12)
Alternative name(s):
9 kDa polypeptide
PSI-C
Photosystem I subunit VII
PsaC
Gene namesi
Name:psaC
Synonyms:frxA
Encoded oniPlastid; Chloroplast
OrganismiPisum sativum (Garden pea)
Taxonomic identifieri3888 [NCBI]
Taxonomic lineageiEukaryotaViridiplantaeStreptophytaEmbryophytaTracheophytaSpermatophytaMagnoliophytaeudicotyledonsGunneridaePentapetalaerosidsfabidsFabalesFabaceaePapilionoideaeFabeaePisum

Subcellular locationi

GO - Cellular componenti

  1. chloroplast thylakoid membrane Source: UniProtKB-SubCell
  2. photosystem I Source: UniProtKB-KW
Complete GO annotation...

Keywords - Cellular componenti

Chloroplast, Membrane, Photosystem I, Plastid, Thylakoid

PTM / Processingi

Molecule processing

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Initiator methioninei1 – 11Removed1 Publication
Chaini2 – 8180Photosystem I iron-sulfur centerUniRule annotation
PRO_0000061996Add
BLAST

Interactioni

Subunit structurei

The eukaryotic PSI reaction center is composed of at least 11 subunits By similarity.

Protein-protein interaction databases

DIPiDIP-60283N.

Structurei

Secondary structure

Legend: HelixTurnBeta strand
Show more details
Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Beta strandi15 – 173
Turni22 – 243
Turni35 – 373
Turni54 – 563
Helixi75 – 773

3D structure databases

Select the link destinations:
PDBe
RCSB PDB
PDBj
Links Updated
EntryMethodResolution (Å)ChainPositionsPDBsum
1YO9model-C2-81[»]
2O01X-ray3.40C2-81[»]
2WSCX-ray3.30C1-81[»]
2WSEX-ray3.49C1-81[»]
2WSFX-ray3.48C1-81[»]
3LW5X-ray3.30C1-81[»]
ProteinModelPortaliP10793.
SMRiP10793. Positions 2-81.

Miscellaneous databases

EvolutionaryTraceiP10793.

Family & Domainsi

Domains and Repeats

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

Sequence similaritiesi

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.

P10793-1 [UniParc]FASTAAdd to Basket

« Hide

MSHSVKIYDT CIGCTQCVRA CPTDVLEMIP WGGCKAKQIA SAPRTEDCVG   50
CKRCESACPT DFLSVRVYLW HETTRSMGLA Y 81
Length:81
Mass (Da):8,980
Last modified:January 23, 2007 - v3
Checksum:i680556D8CB5603BF
GO

Sequence databases

Select the link destinations:
EMBL
GenBank
DDBJ
Links Updated
X13157 Genomic DNA. Translation: CAA31554.1.
PIRiS04033. FEPM1S.
RefSeqiYP_003587533.1. NC_014057.1.

Genome annotation databases

GeneIDi9073063.

Cross-referencesi

Sequence databases

Select the link destinations:
EMBL
GenBank
DDBJ
Links Updated
X13157 Genomic DNA. Translation: CAA31554.1 .
PIRi S04033. FEPM1S.
RefSeqi YP_003587533.1. NC_014057.1.

3D structure databases

Select the link destinations:
PDBe
RCSB PDB
PDBj
Links Updated
Entry Method Resolution (Å) Chain Positions PDBsum
1YO9 model - C 2-81 [» ]
2O01 X-ray 3.40 C 2-81 [» ]
2WSC X-ray 3.30 C 1-81 [» ]
2WSE X-ray 3.49 C 1-81 [» ]
2WSF X-ray 3.48 C 1-81 [» ]
3LW5 X-ray 3.30 C 1-81 [» ]
ProteinModelPortali P10793.
SMRi P10793. Positions 2-81.
ModBasei Search...

Protein-protein interaction databases

DIPi DIP-60283N.

Protocols and materials databases

Structural Biology Knowledgebase Search...

Genome annotation databases

GeneIDi 9073063.

Miscellaneous databases

EvolutionaryTracei P10793.

Family and domain databases

HAMAPi MF_01303. PSI_PsaC.
InterProi IPR017896. 4Fe4S_Fe-S-bd.
IPR017900. 4Fe4S_Fe_S_CS.
IPR017491. PSI_PsaC.
[Graphical view ]
TIGRFAMsi TIGR03048. PS_I_psaC. 1 hit.
PROSITEi PS00198. 4FE4S_FER_1. 2 hits.
PS51379. 4FE4S_FER_2. 2 hits.
[Graphical view ]
ProtoNeti Search...

Publicationsi

  1. "Localization and nucleotide sequence of the gene for the 8 kDa subunit of photosystem I in pea and wheat chloroplast DNA."
    Dunn P.P.J., Gray J.C.
    Plant Mol. Biol. 11:311-319(1988)
    [AGRICOLA] [Europe PMC]
    Cited for: NUCLEOTIDE SEQUENCE [GENOMIC DNA].
  2. "N-terminal amino acid sequence analysis of the subunits of pea photosystem I."
    Dunn P.P.J., Packman L.C., Pappin D., Gray J.C.
    FEBS Lett. 228:157-161(1988) [PubMed] [Europe PMC] [Abstract]
    Cited for: PROTEIN SEQUENCE OF 2-49.

Entry informationi

Entry nameiPSAC_PEA
AccessioniPrimary (citable) accession number: P10793
Entry historyi
Integrated into UniProtKB/Swiss-Prot: July 1, 1989
Last sequence update: January 23, 2007
Last modified: May 14, 2014
This is version 103 of the entry and version 3 of the sequence. [Complete history]
Entry statusiReviewed (UniProtKB/Swiss-Prot)
Annotation programPlant Protein Annotation Program

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

External Data

Dasty 3

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