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Protein

Photosystem I reaction center subunit PsaK 2

Gene

psaK2

Organism
Synechocystis sp. (strain PCC 6803 / Kazusa)
Status
Reviewed-Annotation score: Annotation score: 2 out of 5-Experimental evidence at protein leveli

Functioni

GO - Biological processi

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

Keywords - Biological processi

Photosynthesis

Enzyme and pathway databases

BioCyciMetaCyc:MONOMER-16589.

Names & Taxonomyi

Protein namesi
Recommended name:
Photosystem I reaction center subunit PsaK 2
Alternative name(s):
Photosystem I subunit X 2
Gene namesi
Name:psaK2
Ordered Locus Names:sll0629
OrganismiSynechocystis sp. (strain PCC 6803 / Kazusa)
Taxonomic identifieri1111708 [NCBI]
Taxonomic lineageiBacteriaCyanobacteriaOscillatoriophycideaeChroococcalesSynechocystis
ProteomesiUP000001425 Componenti: Chromosome

Subcellular locationi

Topology

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Transmembranei20 – 4223HelicalSequence AnalysisAdd
BLAST
Transmembranei67 – 8923HelicalSequence AnalysisAdd
BLAST

GO - Cellular componenti

  1. integral component of membrane Source: UniProtKB-KW
  2. photosystem I Source: UniProtKB-KW
  3. thylakoid membrane Source: UniProtKB-SubCell
Complete GO annotation...

Keywords - Cellular componenti

Membrane, Photosystem I, Thylakoid

PTM / Processingi

Molecule processing

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Chaini? – 90Photosystem I reaction center subunit PsaK 2PRO_0000029411
Propeptidei1 – ?Sequence AnalysisPRO_0000029410

Proteomic databases

PaxDbiP74564.

Interactioni

Protein-protein interaction databases

STRINGi1148.sll0629.

Structurei

Secondary structure

1
90
Legend: HelixTurnBeta strand
Show more details
Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Helixi18 – 3720Combined sources
Helixi64 – 663Combined sources
Helixi67 – 8822Combined sources

3D structure databases

Select the link destinations:
PDBei
RCSB PDBi
PDBji
Links Updated
EntryMethodResolution (Å)ChainPositionsPDBsum
4KT0X-ray2.80K1-90[»]
4L6VX-ray3.800/K/k1-90[»]
SMRiP74564. Positions 28-84.
ModBaseiSearch...
MobiDBiSearch...

Family & Domainsi

Sequence similaritiesi

Belongs to the PsaG/PsaK family.Curated

Keywords - Domaini

Transmembrane, Transmembrane helix

Phylogenomic databases

eggNOGiNOG305738.
HOGENOMiHOG000232829.
KOiK02698.
OMAiFAIQKTG.
OrthoDBiEOG6PS615.

Family and domain databases

Gene3Di1.20.860.20. 1 hit.
HAMAPiMF_00474. PSI_PsaK.
InterProiIPR000549. PSI_PsaG/PsaK.
IPR017492. PSI_PsaK.
[Graphical view]
PfamiPF01241. PSI_PSAK. 1 hit.
[Graphical view]
SUPFAMiSSF81563. SSF81563. 1 hit.
TIGRFAMsiTIGR03049. PS_I_psaK. 1 hit.
PROSITEiPS01026. PHOTOSYSTEM_I_PSAGK. 1 hit.
[Graphical view]

Sequencei

Sequence statusi: Complete.

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

P74564-1 [UniParc]FASTAAdd to basket

« Hide

        10         20         30         40         50
MFNTALLLAQ ASPTTAGWSL SVGIIMCLCN VFAFVIGYFA IQKTGKGKDL
60 70 80 90
ALPQLASKKT FGLPELLATM SFGHILGAGM VLGLASSGIL
Length:90
Mass (Da):9,306
Last modified:August 2, 2002 - v2
Checksum:i1D1C642D3D12589B
GO

Sequence cautioni

The sequence BAA18671.1 differs from that shown. Reason: Erroneous initiation. Translation N-terminally shortened.Curated

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
BA000022 Genomic DNA. Translation: BAA18671.1. Different initiation.
PIRiS76759.
RefSeqiNP_442859.1. NC_000911.1.
YP_007452735.1. NC_020286.1.

Genome annotation databases

EnsemblBacteriaiBAA18671; BAA18671; BAA18671.
KEGGisyn:sll0629.
PATRICi23843500. VBISynSp132158_3285.

Cross-referencesi

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
BA000022 Genomic DNA. Translation: BAA18671.1. Different initiation.
PIRiS76759.
RefSeqiNP_442859.1. NC_000911.1.
YP_007452735.1. NC_020286.1.

3D structure databases

Select the link destinations:
PDBei
RCSB PDBi
PDBji
Links Updated
EntryMethodResolution (Å)ChainPositionsPDBsum
4KT0X-ray2.80K1-90[»]
4L6VX-ray3.800/K/k1-90[»]
SMRiP74564. Positions 28-84.
ModBaseiSearch...
MobiDBiSearch...

Protein-protein interaction databases

STRINGi1148.sll0629.

Proteomic databases

PaxDbiP74564.

Protocols and materials databases

Structural Biology KnowledgebaseSearch...

Genome annotation databases

EnsemblBacteriaiBAA18671; BAA18671; BAA18671.
KEGGisyn:sll0629.
PATRICi23843500. VBISynSp132158_3285.

Phylogenomic databases

eggNOGiNOG305738.
HOGENOMiHOG000232829.
KOiK02698.
OMAiFAIQKTG.
OrthoDBiEOG6PS615.

Enzyme and pathway databases

BioCyciMetaCyc:MONOMER-16589.

Family and domain databases

Gene3Di1.20.860.20. 1 hit.
HAMAPiMF_00474. PSI_PsaK.
InterProiIPR000549. PSI_PsaG/PsaK.
IPR017492. PSI_PsaK.
[Graphical view]
PfamiPF01241. PSI_PSAK. 1 hit.
[Graphical view]
SUPFAMiSSF81563. SSF81563. 1 hit.
TIGRFAMsiTIGR03049. PS_I_psaK. 1 hit.
PROSITEiPS01026. PHOTOSYSTEM_I_PSAGK. 1 hit.
[Graphical view]
ProtoNetiSearch...

Publicationsi

  1. "Sequence analysis of the genome of the unicellular cyanobacterium Synechocystis sp. strain PCC6803. II. Sequence determination of the entire genome and assignment of potential protein-coding regions."
    Kaneko T., Sato S., Kotani H., Tanaka A., Asamizu E., Nakamura Y., Miyajima N., Hirosawa M., Sugiura M., Sasamoto S., Kimura T., Hosouchi T., Matsuno A., Muraki A., Nakazaki N., Naruo K., Okumura S., Shimpo S.
    , Takeuchi C., Wada T., Watanabe A., Yamada M., Yasuda M., Tabata S.
    DNA Res. 3:109-136(1996) [PubMed] [Europe PMC] [Abstract]
    Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
    Strain: PCC 6803 / Kazusa.

Entry informationi

Entry nameiPSAK2_SYNY3
AccessioniPrimary (citable) accession number: P74564
Entry historyi
Integrated into UniProtKB/Swiss-Prot: August 2, 2002
Last sequence update: August 2, 2002
Last modified: April 1, 2015
This is version 96 of the entry and version 2 of the sequence. [Complete history]
Entry statusiReviewed (UniProtKB/Swiss-Prot)
Annotation programProkaryotic Protein Annotation Program

Miscellaneousi

Keywords - Technical termi

3D-structure, Complete proteome, Reference proteome

Documents

  1. PDB cross-references
    Index of Protein Data Bank (PDB) cross-references
  2. SIMILARITY comments
    Index of protein domains and families
  3. Synechocystis PCC 6803
    Synechocystis (strain PCC 6803): entries and gene names

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.