ID CYB6_CHAGL STANDARD; PRT; 215 AA. AC Q8M9Z4; DT 10-OCT-2003 (Rel. 42, Created) DT 10-OCT-2003 (Rel. 42, Last sequence update) DT 05-JUL-2004 (Rel. 44, Last annotation update) DE Cytochrome b6. GN Name=petB; OS Chaetosphaeridium globosum. OG Chloroplast. OC Eukaryota; Viridiplantae; Streptophyta; Coleochaetales; OC Chaetosphaeridiaceae; Chaetosphaeridium. OX NCBI_TaxID=96477; RN [1] RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA]. RC STRAIN=M1311; RX MEDLINE=22177139; PubMed=12161560; DOI=10.1073/pnas.162203299; RA Turmel M., Otis C., Lemieux C.; RT "The chloroplast and mitochondrial genome sequences of the charophyte RT Chaetosphaeridium globosum: insights into the timing of the events RT that restructured organelle DNAs within the green algal lineage that RT led to land plants."; RL Proc. Natl. Acad. Sci. U.S.A. 99:11275-11280(2002). CC -!- FUNCTION: Component of the cytochrome b6/f complex which is part CC of the photosynthetic respiratory chain. CC -!- COFACTOR: Binds two heme groups non-covalently. Heme 1 (or BL or CC b562) is low-potential and absorbs at about 562 nm, and heme 2 (or CC BH or b566) is high-potential and absorbs at about 566 nm. CC -!- SUBUNIT: The main subunits of complex b6-f are: cytochrome b6, 17 CC kDa polypeptide (petD), cytochrome f and the Rieske protein. CC -!- SUBCELLULAR LOCATION: Integral membrane protein. Chloroplast CC thylakoid membrane (By similarity). CC -!- SIMILARITY: Belongs to the cytochrome b family. PetB subfamily. CC --------------------------------------------------------------------------- CC Copyrighted by the UniProt Consortium, see https://www.uniprot.org/terms CC Distributed under the Creative Commons Attribution (CC BY 4.0) License CC --------------------------------------------------------------------------- DR EMBL; AF494278; AAM96527.1; -. DR HAMAP; MF_00633; -; 1. DR InterPro; IPR005797; Cytb_b6_N. DR Pfam; PF00033; Cytochrom_B_N; 1. DR PROSITE; PS51002; CYTB_NTER; 1. KW Chloroplast; Electron transport; Heme; Iron; Metal-binding; KW Photosynthesis; Thylakoid; Transmembrane; Transport. FT TRANSMEM 32 52 Potential. FT TRANSMEM 90 110 Potential. FT TRANSMEM 116 136 Potential. FT TRANSMEM 186 206 Potential. FT METAL 86 86 Iron (heme 1 axial ligand) (By FT similarity). FT METAL 100 100 Iron (heme 2 axial ligand) (By FT similarity). FT METAL 187 187 Iron (heme 1 axial ligand) (By FT similarity). FT METAL 202 202 Iron (heme 2 axial ligand) (By FT similarity). SQ SEQUENCE 215 AA; 24231 MW; 2879F90589E0DDFA CRC64; MGKVYDWFEE RLEIQAIADD ISSKYVPPHV NIFYCLGGIT FTSFVIQVAS GFAMTFYYRP TVTEAFASVQ YIMTEVNFGW LIRSVHRWSA SMMVLMMILH IFRVYLTGGF KKPRELTWVT GVILSVLTVS FGVTGYSLPW DQVGYWAVKI VTGVPDAIPV IGSTVVELLR GSVSVGQSTL TRFYSLHTFV LPLLTAVFML MHFLMIRKQG ISGPL //