UniProt functional annotation for P12239



	UniProt functional annotation for P12239

UniProt code: P12239.

Organism: Thermosynechococcus vulcanus (Synechococcus vulcanus).

Taxonomy: Bacteria; Cyanobacteria; Synechococcales; Synechococcaceae; Thermosynechococcus.

Function: This b-type cytochrome is tightly associated with the reaction center of photosystem II (PSII). PSII is a light-driven water:plastoquinone oxidoreductase that uses light energy to abstract electrons from H(2)O, generating O(2) 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. {ECO:0000255|HAMAP-Rule:MF_00643, ECO:0000269|PubMed:19433803, ECO:0000269|PubMed:23426624}.

Cofactor: Name=heme b; Xref=ChEBI:CHEBI:60344; Evidence={ECO:0000255|HAMAP-Rule:MF_00643}; Note=With its partner (PsbE) binds heme. PSII binds additional chlorophylls, carotenoids and specific lipids. {ECO:0000255|HAMAP- Rule:MF_00643, ECO:0000269|PubMed:12518057, ECO:0000269|PubMed:19433803, ECO:0000269|PubMed:21499260, ECO:0000269|PubMed:23426624};

Subunit: Heterodimer of an alpha subunit and a beta subunit. Cyanobacterial PSII is composed of 1 copy each of membrane proteins PsbA, PsbB, PsbC, PsbD, PsbE, PsbF, PsbH, PsbI, PsbJ, PsbK, PsbL, PsbM, PsbT, PsbX, PsbY, PsbZ, Ycf12, at least 3 peripheral proteins PsbO, PsbU, PsbV and a large number of cofactors. It forms dimeric complexes. {ECO:0000255|HAMAP-Rule:MF_00643, ECO:0000269|PubMed:12461137, ECO:0000269|PubMed:12518057, ECO:0000269|PubMed:19433803, ECO:0000269|PubMed:21499260, ECO:0000269|PubMed:23426624}.

Subcellular location: Cellular thylakoid membrane {ECO:0000255|HAMAP- Rule:MF_00643, ECO:0000269|PubMed:12518057, ECO:0000269|PubMed:19433803, ECO:0000269|PubMed:21499260, ECO:0000269|PubMed:23426624}; Single-pass membrane protein {ECO:0000255|HAMAP-Rule:MF_00643, ECO:0000269|PubMed:12518057, ECO:0000269|PubMed:19433803, ECO:0000269|PubMed:21499260, ECO:0000269|PubMed:23426624}.

Similarity: Belongs to the PsbE/PsbF family. {ECO:0000255|HAMAP- Rule:MF_00643}.

Annotations taken from UniProtKB at the EBI.


Organism:		Thermosynechococcus vulcanus (Synechococcus vulcanus).
Taxonomy:		Bacteria; Cyanobacteria; Synechococcales; Synechococcaceae; Thermosynechococcus.



Function:		This b-type cytochrome is tightly associated with the reaction center of photosystem II (PSII). PSII is a light-driven water:plastoquinone oxidoreductase that uses light energy to abstract electrons from H(2)O, generating O(2) 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. {ECO:0000255\|HAMAP-Rule:MF_00643, ECO:0000269\|PubMed:19433803, ECO:0000269\|PubMed:23426624}.


Cofactor:		Name=heme b; Xref=ChEBI:CHEBI:60344; Evidence={ECO:0000255\|HAMAP-Rule:MF_00643}; Note=With its partner (PsbE) binds heme. PSII binds additional chlorophylls, carotenoids and specific lipids. {ECO:0000255\|HAMAP- Rule:MF_00643, ECO:0000269\|PubMed:12518057, ECO:0000269\|PubMed:19433803, ECO:0000269\|PubMed:21499260, ECO:0000269\|PubMed:23426624};
Subunit:		Heterodimer of an alpha subunit and a beta subunit. Cyanobacterial PSII is composed of 1 copy each of membrane proteins PsbA, PsbB, PsbC, PsbD, PsbE, PsbF, PsbH, PsbI, PsbJ, PsbK, PsbL, PsbM, PsbT, PsbX, PsbY, PsbZ, Ycf12, at least 3 peripheral proteins PsbO, PsbU, PsbV and a large number of cofactors. It forms dimeric complexes. {ECO:0000255\|HAMAP-Rule:MF_00643, ECO:0000269\|PubMed:12461137, ECO:0000269\|PubMed:12518057, ECO:0000269\|PubMed:19433803, ECO:0000269\|PubMed:21499260, ECO:0000269\|PubMed:23426624}.
Subcellular location:		Cellular thylakoid membrane {ECO:0000255\|HAMAP- Rule:MF_00643, ECO:0000269\|PubMed:12518057, ECO:0000269\|PubMed:19433803, ECO:0000269\|PubMed:21499260, ECO:0000269\|PubMed:23426624}; Single-pass membrane protein {ECO:0000255\|HAMAP-Rule:MF_00643, ECO:0000269\|PubMed:12518057, ECO:0000269\|PubMed:19433803, ECO:0000269\|PubMed:21499260, ECO:0000269\|PubMed:23426624}.
Similarity:		Belongs to the PsbE/PsbF family. {ECO:0000255\|HAMAP- Rule:MF_00643}.