Protein
Cytochrome b559 subunit beta
Organism
Prochlorococcus marinus subsp. pastoris (strain CCMP1986 / NIES-2087 / MED4)
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.
Similarity
Belongs to the PsbE/PsbF family.
Sequence
MSNSQAPMQAVEVRVYPIFTIRWLAVHALAIPSVFFLGAIAAMQFLR