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Protein

Photosystem II reaction center protein H

Gene

psbH

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

Functioni

One of the components of the core complex of photosystem II (PSII), required for its stability and/or assembly. PSII is a light-driven water:plastoquinone oxidoreductase that uses light energy to abstract electrons from H2O, generating O2 and a proton gradient subsequently used for ATP formation. It consists of a core antenna complex that captures photons, and an electron transfer chain that converts photonic excitation into a charge separation.UniRule annotation

GO - Molecular functioni

GO - Biological processi

Keywordsi

Biological processPhotosynthesis

Names & Taxonomyi

Protein namesi
Recommended name:
Photosystem II reaction center protein HUniRule annotation
Short name:
PSII-HUniRule annotation
Gene namesi
Name:psbHUniRule annotation
Encoded oniPlastid; Chloroplast
OrganismiCyanidium caldarium (Red alga)
Taxonomic identifieri2771 [NCBI]
Taxonomic lineageiEukaryotaRhodophytaBangiophyceaeCyanidialesCyanidiaceaeCyanidium

Subcellular locationi

  • chloroplast thylakoid membrane UniRule annotation; Single-pass membrane protein UniRule annotation

Topology

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Transmembranei29 – 49HelicalUniRule annotationAdd BLAST21

GO - Cellular componenti

Keywords - Cellular componenti

Chloroplast, Membrane, Photosystem II, Plastid, Thylakoid

PTM / Processingi

Molecule processing

Feature keyPosition(s)DescriptionActionsGraphical viewLength
ChainiPRO_00000705051 – 67Photosystem II reaction center protein HAdd BLAST67

Interactioni

Subunit structurei

PSII is composed of 1 copy each of membrane proteins PsbA, PsbB, PsbC, PsbD, numerous small proteins, at least 3 peripheral proteins of the oxygen-evolving complex and a large number of cofactors. It forms dimeric complexes.UniRule annotation

Structurei

3D structure databases

Select the link destinations:
PDBei
RCSB PDBi
PDBji
Links Updated
PDB entryMethodResolution (Å)ChainPositionsPDBsum
4YUUX-ray2.77H1/H2/h1/h21-67[»]
ProteinModelPortaliO19925
SMRiO19925
ModBaseiSearch...
MobiDBiSearch...

Family & Domainsi

Sequence similaritiesi

Belongs to the PsbH family.UniRule annotation

Keywords - Domaini

Transmembrane, Transmembrane helix

Family and domain databases

Gene3Di1.20.5.880, 1 hit
HAMAPiMF_00752 PSII_PsbH, 1 hit
InterProiView protein in InterPro
IPR001056 PSII_PsbH
IPR036863 PSII_PsbH_sf
PANTHERiPTHR34469 PTHR34469, 1 hit
PfamiView protein in Pfam
PF00737 PsbH, 1 hit
ProDomiView protein in ProDom or Entries sharing at least one domain
PD003584 PSII_PsbH, 1 hit
SUPFAMiSSF161025 SSF161025, 1 hit

Sequencei

Sequence statusi: Complete.

O19925-1 [UniParc]FASTAAdd to basket

« Hide

        10         20         30         40         50
MALKTRLGEL LRPLNSQYGK VAPGWGTTPI MGIFMALFLL FLIIILQIYN
60
SSLILENLDI SWTTLGI
Length:67
Mass (Da):7,495
Last modified:January 1, 1998 - v1
Checksum:i07F7121B5CB6E00F
GO

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
AF022186 Genomic DNA Translation: AAB82664.1
PIRiT11993
RefSeqiNP_045097.1, NC_001840.1

Genome annotation databases

GeneIDi800137

Similar proteinsi

Entry informationi

Entry nameiPSBH_CYACA
AccessioniPrimary (citable) accession number: O19925
Entry historyiIntegrated into UniProtKB/Swiss-Prot: July 15, 1998
Last sequence update: January 1, 1998
Last modified: March 28, 2018
This is version 73 of the entry and version 1 of the sequence. See complete history.
Entry statusiReviewed (UniProtKB/Swiss-Prot)

Miscellaneousi

Keywords - Technical termi

3D-structure
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Main funding by: National Institutes of Health