ID CYB_CHEMY Reviewed; 381 AA. AC Q9TEC1; DT 04-JAN-2005, integrated into UniProtKB/Swiss-Prot. DT 01-MAY-2000, sequence version 1. DT 01-MAY-2007, entry version 32. DE Cytochrome b. GN Name=MT-CYB; Synonyms=COB, CYTB, MTCYB; OS Chelonia mydas (Green sea-turtle) (Chelonia agassizi). OG Mitochondrion. OC Eukaryota; Metazoa; Chordata; Craniata; Vertebrata; Euteleostomi; OC Testudines; Cryptodira; Chelonioidea; Cheloniidae; Chelonia. OX NCBI_TaxID=8469; RN [1] RP NUCLEOTIDE SEQUENCE [GENOMIC DNA]. RX MEDLINE=99297345; PubMed=10368956; RA Kumazawa Y., Nishida M.; RT "Complete mitochondrial DNA sequences of the green turtle and blue- RT tailed mole skink: statistical evidence for archosaurian affinity of RT turtles."; RL Mol. Biol. Evol. 16:784-792(1999). CC -!- FUNCTION: Component of the ubiquinol-cytochrome c reductase CC complex (complex III or cytochrome b-c1 complex), which is a CC respiratory chain that generates an electrochemical potential CC coupled to ATP synthesis (By similarity). CC -!- COFACTOR: Binds 2 heme groups non-covalently (By similarity). CC -!- SUBUNIT: The main subunits of complex b-c1 are: cytochrome b, CC cytochrome c1 and the Rieske protein (By similarity). CC -!- MISCELLANEOUS: Heme 1 (or BL or b562) is low-potential and absorbs CC at about 562 nm, and heme 2 (or BH or b566) is high-potential and CC absorbs at about 566 nm (By similarity). CC -!- SIMILARITY: Belongs to the cytochrome b family. 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; AB012104; BAA79209.1; -; Genomic_DNA. DR HSSP; P18946; 2BCC. DR SMR; Q9TEC1; 2-379. DR InterPro; IPR005798; Cytb_b6_C. DR InterPro; IPR005797; Cytb_b6_N. DR Gene3D; G3DSA:1.20.810.10; G3DSA:1.20.810.10; 1. DR Pfam; PF00032; Cytochrom_B_C; 1. DR Pfam; PF00033; Cytochrom_B_N; 1. DR PROSITE; PS51003; CYTB_CTER; 1. DR PROSITE; PS51002; CYTB_NTER; 1. KW Electron transport; Heme; Iron; Membrane; Metal-binding; KW Mitochondrion; Respiratory chain; Transmembrane; Transport. FT CHAIN 1 381 Cytochrome b. FT /FTId=PRO_0000060775. FT METAL 84 84 Iron 1 (heme b562 axial ligand). FT METAL 98 98 Iron 2 (heme b566 axial ligand). FT METAL 183 183 Iron 1 (heme b562 axial ligand). FT METAL 197 197 Iron 2 (heme b566 axial ligand). SQ SEQUENCE 381 AA; 42859 MW; DE980F3AFE9E17D7 CRC64; MATNLRKTHP MMKIINNLVI DLPSPSNISA WWNFGSLLAT CLALQIITGI FLAMHYSPDI SMAFSSIAHI TRDVQYGWLI RNMHANGASL FFMCIYLHIG RGIYYGSYLY KETWNTGIIL LLLVMATAFV GYVLPWGQMS FWGATVITNL LSAIPYIGNT LVQWIWGGFS VDNATLTRFF TFHFLLPFAI TGLTAVHLLF LHETGSNNPT GLNSNTDKIP FHPYFSYKDL LGLILMLTFL LTLTLFSPYL LGDPDNFTPA NPLSTPPHIK PEWYFLFAYA ILRSIPNKLG GVLALLFSIL ILFLMPTLHT SKQRTASFRP LTQILFWSLV ADLLVLTWIG GQPVEDPFII IGQVASTFYF LILLLLMPAA GMIENKMLNL K //