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Protein

Photosystem I reaction center subunit psaK, chloroplastic

Gene

PSAK

Organism
Spinacia oleracea (Spinach)
Status
Reviewed-Annotation score: Annotation score: 2 out of 5-Experimental evidence at protein leveli

Functioni

GO - Molecular functioni

  1. chlorophyll binding Source: InterPro

GO - Biological processi

  1. photosynthesis Source: UniProtKB-KW
Complete GO annotation...

Keywords - Biological processi

Photosynthesis

Names & Taxonomyi

Protein namesi
Recommended name:
Photosystem I reaction center subunit psaK, chloroplastic
Alternative name(s):
Light-harvesting 5 kDa protein
PSI-K
Photosystem I subunit X
Gene namesi
Name:PSAK
OrganismiSpinacia oleracea (Spinach)
Taxonomic identifieri3562 [NCBI]
Taxonomic lineageiEukaryotaViridiplantaeStreptophytaEmbryophytaTracheophytaSpermatophytaMagnoliophytaeudicotyledonsGunneridaePentapetalaeCaryophyllalesAmaranthaceaeChenopodioideaeAnserineaeSpinacia

Subcellular locationi

Topology

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Transmembranei3 – 2321HelicalSequence AnalysisAdd
BLAST

GO - Cellular componenti

  1. chloroplast thylakoid membrane Source: UniProtKB-SubCell
  2. integral component of membrane Source: UniProtKB-KW
  3. 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
Chaini1 – ›29›29Photosystem I reaction center subunit psaK, chloroplasticPRO_0000206211Add
BLAST

Family & Domainsi

Sequence similaritiesi

Belongs to the PsaG/PsaK family.Curated

Keywords - Domaini

Transmembrane, Transmembrane helix

Family and domain databases

Gene3Di1.10.286.40. 1 hit.
InterProiIPR000549. PSI_PsaG/PsaK.
IPR023618. PSI_PsaG/PsaK_dom.
[Graphical view]
PfamiPF01241. PSI_PSAK. 1 hit.
[Graphical view]

Sequencei

Sequence statusi: Fragment.

P14627-1 [UniParc]FASTAAdd to basket

« Hide

        10         20 
GDFIGSSTNL IMVTSTTLML FAGRFGLXP
Length:29
Mass (Da):3,059
Last modified:August 1, 1990 - v2
Checksum:i38AECD218210B24D
GO

Experimental Info

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Non-terminal residuei29 – 291

Sequence databases

PIRiS07055.
S09734.

Cross-referencesi

Sequence databases

PIRiS07055.
S09734.

3D structure databases

ModBaseiSearch...
MobiDBiSearch...

Protocols and materials databases

Structural Biology KnowledgebaseSearch...

Family and domain databases

Gene3Di1.10.286.40. 1 hit.
InterProiIPR000549. PSI_PsaG/PsaK.
IPR023618. PSI_PsaG/PsaK_dom.
[Graphical view]
PfamiPF01241. PSI_PSAK. 1 hit.
[Graphical view]
ProtoNetiSearch...

Publicationsi

  1. "Characterization and N-terminal sequence of a 5 kDa polypeptide in the photosystem I core complex from spinach."
    Hoshina S., Sue S., Kunishima N., Kamide K., Wada K., Itoh S.
    FEBS Lett. 258:305-308(1988) [PubMed] [Europe PMC] [Abstract]
    Cited for: PROTEIN SEQUENCE.
  2. "Polypeptide composition of higher plant photosystem I complex. Identification of psaI, psaJ and psaK gene products."
    Ikeuchi M., Hirano A., Hiyama T., Inoue Y.
    FEBS Lett. 263:274-278(1989) [PubMed] [Europe PMC] [Abstract]
    Cited for: PROTEIN SEQUENCE OF 1-27.
  3. "The photosystem I 5.5 kDa subunit (the psaK gene product). An intrinsic subunit of the PSI reaction center complex."
    Wynn R.M., Malkin R.
    FEBS Lett. 262:45-48(1989)
    Cited for: PROTEIN SEQUENCE OF 1-10.

Entry informationi

Entry nameiPSAK_SPIOL
AccessioniPrimary (citable) accession number: P14627
Entry historyi
Integrated into UniProtKB/Swiss-Prot: April 1, 1990
Last sequence update: August 1, 1990
Last modified: January 7, 2015
This is version 72 of the entry and version 2 of the sequence. [Complete history]
Entry statusiReviewed (UniProtKB/Swiss-Prot)
Annotation programPlant Protein Annotation Program

Miscellaneousi

Keywords - Technical termi

Direct protein sequencing

Documents

  1. 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.