HAMAP rule MF_00589

General rule information [?]

Accession	MF_00589
Dates	28-OCT-2002 (Created) 17-FEB-2023 (Last updated, Version 25)

Name

PSII_PsbU

Scope

Bacteria; Cyanobacteriota

Templates

Q55332 (PSBU_SYNY3); Q9F1L5 (PSBU_THEVB): [Recover all]

Triggered by

Propagated annotation [?]

Identifier, protein and gene names [?]

Identifier

PSBU

Protein name

RecName:		Full=Photosystem II 12 kDa extrinsic protein;
AltName:		Full=PS II complex 12 kDa extrinsic protein;
AltName:		Full=PSII-U;
Flags:		Precursor;

Gene name

psbU

Comments [?]

Function	Stabilizes the structure of photosystem II oxygen-evolving complex (OEC), the ion environment of oxygen evolution and protects the OEC against heat-induced inactivation.
Subunit	With PsbO,P,Q and V forms the oxygen-evolving complex of photosystem II.
Subcellular location	Cellular thylakoid membrane; Peripheral membrane protein; Lumenal side. Note=Associated with photosystem II at the Lumenal side of the thylakoid membrane.
Similarity	Belongs to the PsbU family.

Keywords [?]

Gene Ontology [?]

GO:0015979; Biological process: photosynthesis.
GO:0042651; Cellular component: thylakoid membrane.

Cross-references [?]

Pfam	PF06514; PsbU; 1;

Computed features [?]

General

Signal; -; 1; trigger=yes;

Additional information [?]

Size range	120-143 amino acids
Related rules	None
Fusion	None
Comments	GLOVI is very divergent, and hence atypical. For a review on the composition of the oxygen-evolving complex see: PubMed=17200881; DOI=10.1007/s11120-006-9117-1; Roose J.L., Wegener K.M., Pakrasi H.B.; "The extrinsic proteins of Photosystem II."; Photosyn. Res. 92:369-387(2007).