HAMAP annotation rule MF_00589
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Accession MF_00589
Dates 28-OCT-2002 (Created)
19-JUL-2012 (Last updated, Version 22)
Name PSII_PsbU
Scope Bacteria; Cyanobacteria
Triggered by



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


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 (By similarity).
SUBUNIT With PsbO,P,Q and V forms the oxygen-evolving complex of photosystem II (By similarity).
SUBCELLULAR LOCATION Cellular thylakoid membrane; Peripheral membrane protein; Lumenal side (By similarity). Note=Associated with photosystem II at the Lumenal side of the thylakoid membrane (By similarity).
SIMILARITY Belongs to the PsbU family.


Electron transport
Membrane
Photosynthesis
Photosystem II
Thylakoid
Transport


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


Pfam PF06514; PsbU; 1;


General Signal; -; 1; trigger=yes;


Size range: 120-143 amino acids
Related Rules: None
Templates: Q55332 (PSBU_SYNY3); Q9F1L5 (PSBU_THEEB): [Recover all]
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).


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