AC MF_01316; DC Protein; auto TR HAMAP; MF_01316; -; 1; level=0 XX Names: PSII_PsbI XX ID PSBI case not DE RecName: Full=Photosystem II reaction center protein I; DE Short=PSII-I; DE AltName: Full=PSII 4.4 kDa protein; else case DE RecName: Full=Photosystem II reaction center protein I; DE Short=PSII-I; DE AltName: Full=PSII 4.8 kDa protein; end case GN Name=psbI; XX CC -!- FUNCTION: One of the components of the core complex of photosystem II CC (PSII), required for its stability and/or assembly. PSII is a light- CC driven water:plastoquinone oxidoreductase that uses light energy to CC abstract electrons from H(2)O, generating O(2) and a proton gradient CC subsequently used for ATP formation. It consists of a core antenna CC complex that captures photons, and an electron transfer chain that CC converts photonic excitation into a charge separation. case CC -!- SUBUNIT: PSII is composed of 1 copy each of membrane proteins PsbA, CC PsbB, PsbC, PsbD, PsbE, PsbF, PsbH, PsbI, PsbJ, PsbK, PsbL, PsbM, PsbT, CC PsbX, PsbY, PsbZ, Psb30/Ycf12, peripheral proteins PsbO, CyanoQ (PsbQ), CC PsbU, PsbV and a large number of cofactors. It forms dimeric complexes. else CC -!- SUBUNIT: PSII is composed of 1 copy each of membrane proteins PsbA, CC PsbB, PsbC, PsbD, PsbE, PsbF, PsbH, PsbI, PsbJ, PsbK, PsbL, PsbM, PsbT, CC PsbX, PsbY, PsbZ, Psb30/Ycf12, at least 3 peripheral proteins of the CC oxygen-evolving complex and a large number of cofactors. It forms CC dimeric complexes. end case case CC -!- SUBCELLULAR LOCATION: Plastid, chloroplast thylakoid membrane; Single- CC pass membrane protein. else case CC -!- SUBCELLULAR LOCATION: Cell inner membrane; Single-pass membrane CC protein. else CC -!- SUBCELLULAR LOCATION: Cellular thylakoid membrane; Single-pass membrane CC protein. end case CC -!- SIMILARITY: Belongs to the PsbI family. XX DR Pfam; PF02532; PsbI; 1; trigger=no DR General; Transmembrane; -; 1; trigger=yes XX KW Membrane KW Photosynthesis KW Photosystem II KW Reaction center KW Transmembrane case KW Formylation end case case KW Cell membrane KW Cell inner membrane else KW Thylakoid end case KW Transmembrane helix XX GO GO:0015979; P:photosynthesis case GO GO:0009535; C:chloroplast thylakoid membrane else case GO GO:0005886; C:plasma membrane else GO GO:0042651; C:thylakoid membrane end case XX FT None XX Size: 35-53; Related: None; Template: P62103; Q8DJZ6; Q54697; P59763; P12240; P62102; Scope: Bacteria; Cyanobacteriota Plastid Fusion: Nter: None Cter: None Duplicate: None Plasmid: None Comments: None XX # Revision 1.31 2023/06/26 //