ID C3VZR5_9CONI Unreviewed; 215 AA. AC C3VZR5; DT 16-JUN-2009, integrated into UniProtKB/TrEMBL. DT 16-JUN-2009, sequence version 1. DT 01-SEP-2009, entry version 3. DE RecName: Full=Cytochrome b6; GN Name=petB; ORFNames=PLC-449; OS Pinus aristata. OG Plastid; Chloroplast. OC Eukaryota; Viridiplantae; Streptophyta; Embryophyta; Tracheophyta; OC Spermatophyta; Coniferopsida; Coniferales; Pinaceae; Pinus; Strobus. OX NCBI_TaxID=71623; RN [1] RP NUCLEOTIDE SEQUENCE. RC STRAIN=ARIS02; RA Parks M.B., Liston A., Cronn R.C.; RT "Whole Chloroplast Genome Sequences Increase Infrageneric Phylogenetic RT Resolution."; RL Submitted (APR-2009) to the EMBL/GenBank/DDBJ databases. CC -!- FUNCTION: Component of the cytochrome b6-f complex, which mediates CC electron transfer between photosystem II (PSII) and photosystem I CC (PSI), cyclic electron flow around PSI, and state transitions (By CC similarity). CC -!- COFACTOR: Binds 2 heme groups (By similarity). CC -!- SUBUNIT: The 4 large subunits of the cytochrome b6-f complex are CC cytochrome b6, subunit IV (17 kDa polypeptide, petD), cytochrome f CC and the Rieske protein, while the 4 small subunits are petG, petL, CC petM and petN. The complex functions as a dimer (By similarity). CC -!- SUBCELLULAR LOCATION: Plastid, chloroplast thylakoid membrane; CC Multi-pass membrane protein (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; FJ899567; ACP51541.1; -; Genomic_DNA. DR GO; GO:0009507; C:chloroplast; IEA:UniProtKB-KW. DR GO; GO:0016020; C:membrane; IEA:InterPro. DR GO; GO:0009055; F:electron carrier activity; IEA:InterPro. DR GO; GO:0016491; F:oxidoreductase activity; IEA:InterPro. DR GO; GO:0022904; P:respiratory electron transport chain; IEA:InterPro. DR InterPro; IPR016175; Cyt_b/b6. DR InterPro; IPR005797; Cyt_b/b6_N. DR Gene3D; G3DSA:1.20.810.10; Cytochrome_b/b6; 1. DR PANTHER; PTHR19271; Cytochrome_b/b6; 1. DR Pfam; PF00033; Cytochrom_B_N; 1. DR PROSITE; PS51002; CYTB_NTER; 1. PE 3: Inferred from homology; KW Chloroplast; Electron transport; Heme; Iron; Metal-binding; KW Photosynthesis; Plastid; Thylakoid; Transmembrane; Transport. SQ SEQUENCE 215 AA; 24261 MW; E696F7DD72DB3DDD CRC64; MGKVYDWFEE RLEIQAIADD ITSKYVPPHV NIFYCLGGIT LTCFLVQVAT GFAMTFYYRP TVTEAFASVQ YLMTEVNFGW LIRSIHRWSA SMMVLMMILH VFRVYLTGGF KKPRELTWVT GVILAVLTVS FGVTGYSLPW DQIGYWAVKI VTGVPEAIPV IGSPLVELLR GSVSVGQSTL TRFYSLHTFI LPLLTAVFMP MHFLMIRKQG ISGPL //