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HAMAP rule MF_00642

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General rule information [?]

Accession MF_00642
Dates 26-MAY-2003 (Created)
20-JUN-2023 (Last updated, Version 49)
Name PSII_PsbE
Scope(s) Bacteria
Cyanobacteriota
Plastid
Template(s) P69383 (PSBE_SPIOL); P09190 (PSBE_SYNY3); Q8DIP0 (PSBE_THEVB); P12238 (PSBE_THEVL); [ Recover all ]
Triggered by HAMAP; MF_00642 (Get profile general information and statistics)

Propagated annotation [?]

Identifier, protein and gene names [?]

Identifier PSBE
Protein name RecName: Full=Cytochrome b559 subunit alpha;
AltName: Full=PSII reaction center subunit V;
Gene name Name=psbE;

Comments [?]

FUNCTIONThis 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.
COFACTOR Name=heme b; Xref=ChEBI:CHEBI:60344; Note=With its partner (PsbF) binds heme. PSII binds additional chlorophylls, carotenoids and specific lipids.;
case <OC:Cyanobacteriota>
SUBUNITHeterodimer of an alpha subunit and beta subunit. 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, Psb30/Ycf12, peripheral proteins PsbO, CyanoQ (PsbQ), PsbU, PsbV and a large number of cofactors. It forms dimeric complexes.
else
SUBUNITHeterodimer of an alpha subunit and a beta subunit. 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, Psb30/Ycf12, at least 3 peripheral proteins of the oxygen-evolving complex and a large number of cofactors. It forms dimeric complexes.
end case
case <OG:Chloroplast>
SUBCELLULAR LOCATIONPlastid, chloroplast thylakoid membrane; Single- pass membrane protein.
else case <OC:Gloeobacter>
SUBCELLULAR LOCATIONCell inner membrane; Single-pass membrane protein.
else
SUBCELLULAR LOCATIONCellular thylakoid membrane; Single-pass membrane protein.
end case
SIMILARITYBelongs to the PsbE/PsbF family.

Keywords [?]


Gene Ontology [?]

GO:0009055; Molecular function:electron transfer activity
GO:0005506; Molecular function:iron ion binding
GO:0015979; Biological process:photosynthesis
case <OG:Chloroplast>
GO:0009535; Cellular component:chloroplast thylakoid membrane
else case <OCellular component:Gloeobacter>
GO:0005886; Cellular component:plasma membrane
else; https://www.ebi.ac.uk/QuickGO/term/else
GO:0042651; Cellular component:thylakoid membrane
end case

Cross-references [?]

Pfam PF00283; Cytochrom_B559; 1;
Pfam PF00284; Cytochrom_B559a; 1;
PIRSF PIRSF000036; PsbE; 1;
NCBIfam TIGR01332; Cyt_b559_alpha; 1;
PROSITE PS00537; CYTOCHROME_B559; 1;

Features [?]

From: PSBE_THEVL (P12238)
Key From To Description Tag Condition FTGroup
TRANSMEM 21 35 /note="Helical"
BINDING 23 23 /ligand="heme"
/ligand_id="ChEBI:CHEBI:30413"
/ligand_note="ligand shared with beta subunit"
/ligand_part="Fe"
/ligand_part_id="ChEBI:CHEBI:18248"
/note="axial binding residue"
H

Additional information [?]

Size range 73-84 amino acids
Related rules MF_00643
Fusion Nter: None Cter: None



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