Protein
Photosystem II protein D1 3
Organism
Nostoc sp. (strain PCC 7120 / SAG 25.82 / UTEX 2576)
Function
Photosystem II (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. The D1/D2 (PsbA/PsbA) reaction center heterodimer binds P680, the primary electron donor of PSII as well as several subsequent electron acceptors.
Similarity
Belongs to the reaction center PufL/M/PsbA/D family.
Sequence
MTTLLEQRSSANLWHRFGNWITSTENRMYVGWFGVLLIPTALTAAIVFILAFIAAPPVDVDGIREPVSGSLLYGNNIITATVVPTSAAIGLHLYPIWEAASLDEWLYNGGPYQMIVLHFLIAIYAYMGRQWELSYRLGMRPWIPVAFSAPVAAATAVLLIYPIGQGSFSDGMMLGISGTFNFMIVFSPEHNILMHPFHMIGVAGVFGGALFSAMHGSLVTSTLVRETSEVESANTGYKFGQEEETYNIVAAHGYFGRLIFQYASFNNSRSLHFFLAAWPVIGIWFAALGISTMSFNLNGFNFNNSILDHQGRTIDTWADLLNRANLGIEVMHERNAHNFPLDLASGEVQPIALTAPAIAS