ID Q4VWI5_THALA Unreviewed; 368 AA. AC Q4VWI5; DT 05-JUL-2005, integrated into UniProtKB/TrEMBL. DT 05-JUL-2005, sequence version 1. DT 22-FEB-2023, entry version 70. DE RecName: Full=Cytochrome b {ECO:0000256|ARBA:ARBA00013531, ECO:0000256|RuleBase:RU362117}; DE Flags: Fragment; OS Thalpomys lasiotis (Hairy-eared cerrado mouse). OG Mitochondrion {ECO:0000313|EMBL:AAQ90240.1}. OC Eukaryota; Metazoa; Chordata; Craniata; Vertebrata; Euteleostomi; Mammalia; OC Eutheria; Euarchontoglires; Glires; Rodentia; Myomorpha; Muroidea; OC Cricetidae; Sigmodontinae; Thalpomys. OX NCBI_TaxID=245787 {ECO:0000313|EMBL:AAQ90240.1}; RN [1] {ECO:0000313|EMBL:AAQ90240.1} RP NUCLEOTIDE SEQUENCE. RC STRAIN=1561 {ECO:0000313|EMBL:AAQ90240.1}; RA Andrade A.F.B., Bovicino C.R., Briani D.C., Kasahara S.; RT "Karyologic diversification and phylogenetic relationships of the genus RT Thalpomys (Rodentia, Sigmodontinae)."; RL Submitted (MAY-2003) to the EMBL/GenBank/DDBJ databases. CC -!- FUNCTION: Component of the ubiquinol-cytochrome c reductase complex CC (complex III or cytochrome b-c1 complex) that is part of the CC mitochondrial respiratory chain. The b-c1 complex mediates electron CC transfer from ubiquinol to cytochrome c. Contributes to the generation CC of a proton gradient across the mitochondrial membrane that is then CC used for ATP synthesis. {ECO:0000256|ARBA:ARBA00002566, CC ECO:0000256|RuleBase:RU362117}. CC -!- COFACTOR: CC Name=heme b; Xref=ChEBI:CHEBI:60344; CC Evidence={ECO:0000256|RuleBase:RU362117}; CC Note=Binds 2 heme groups non-covalently. CC {ECO:0000256|RuleBase:RU362117}; CC -!- COFACTOR: CC Name=heme; Xref=ChEBI:CHEBI:30413; CC Evidence={ECO:0000256|PIRSR:PIRSR038885-2}; CC Note=Binds 2 heme groups non-covalently. CC {ECO:0000256|PIRSR:PIRSR038885-2}; CC -!- SUBUNIT: The cytochrome bc1 complex contains 11 subunits: 3 respiratory CC subunits (MT-CYB, CYC1 and UQCRFS1), 2 core proteins (UQCRC1 and CC UQCRC2) and 6 low-molecular weight proteins (UQCRH/QCR6, UQCRB/QCR7, CC UQCRQ/QCR8, UQCR10/QCR9, UQCR11/QCR10 and a cleavage product of CC UQCRFS1). This cytochrome bc1 complex then forms a dimer. CC {ECO:0000256|ARBA:ARBA00011088}. CC -!- SUBCELLULAR LOCATION: Membrane {ECO:0000256|ARBA:ARBA00004141}; Multi- CC pass membrane protein {ECO:0000256|ARBA:ARBA00004141}. Mitochondrion CC inner membrane {ECO:0000256|ARBA:ARBA00004448}; Multi-pass membrane CC protein {ECO:0000256|ARBA:ARBA00004448}. CC -!- SIMILARITY: Belongs to the cytochrome b family. CC {ECO:0000256|RuleBase:RU362117}. 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; AY310353; AAQ90240.1; -; Genomic_DNA. DR GO; GO:0005743; C:mitochondrial inner membrane; IEA:UniProtKB-SubCell. DR GO; GO:0045275; C:respiratory chain complex III; IEA:InterPro. DR GO; GO:0046872; F:metal ion binding; IEA:UniProtKB-UniRule. DR GO; GO:0008121; F:ubiquinol-cytochrome-c reductase activity; IEA:InterPro. DR GO; GO:0022904; P:respiratory electron transport chain; IEA:InterPro. DR CDD; cd00290; cytochrome_b_C; 1. DR CDD; cd00284; Cytochrome_b_N; 1. DR InterPro; IPR005798; Cyt_b/b6_C. DR InterPro; IPR036150; Cyt_b/b6_C_sf. DR InterPro; IPR005797; Cyt_b/b6_N. DR InterPro; IPR027387; Cytb/b6-like_sf. DR InterPro; IPR030689; Cytochrome_b. DR InterPro; IPR016174; Di-haem_cyt_TM. DR PANTHER; PTHR19271; CYTOCHROME B; 1. DR PANTHER; PTHR19271:SF37; CYTOCHROME B; 1. DR Pfam; PF00032; Cytochrom_B_C; 1. DR Pfam; PF00033; Cytochrome_B; 1. DR PIRSF; PIRSF038885; COB; 1. DR SUPFAM; SSF81648; a domain/subunit of cytochrome bc1 complex (Ubiquinol-cytochrome c reductase); 1. DR SUPFAM; SSF81342; Transmembrane di-heme cytochromes; 1. DR PROSITE; PS51003; CYTB_CTER; 1. DR PROSITE; PS51002; CYTB_NTER; 1. PE 3: Inferred from homology; KW Electron transport {ECO:0000256|ARBA:ARBA00022982, KW ECO:0000256|RuleBase:RU362117}; KW Heme {ECO:0000256|ARBA:ARBA00022617, ECO:0000256|PIRSR:PIRSR038885-2}; KW Iron {ECO:0000256|ARBA:ARBA00023004, ECO:0000256|PIRSR:PIRSR038885-2}; KW Membrane {ECO:0000256|ARBA:ARBA00023136, ECO:0000256|RuleBase:RU362117}; KW Metal-binding {ECO:0000256|ARBA:ARBA00022723, KW ECO:0000256|PIRSR:PIRSR038885-2}; KW Mitochondrion {ECO:0000256|ARBA:ARBA00023128, KW ECO:0000256|RuleBase:RU362117}; KW Mitochondrion inner membrane {ECO:0000256|ARBA:ARBA00022792}; KW Respiratory chain {ECO:0000256|ARBA:ARBA00022660, KW ECO:0000256|RuleBase:RU362117}; KW Transmembrane {ECO:0000256|ARBA:ARBA00022692, KW ECO:0000256|RuleBase:RU362117}; KW Transmembrane helix {ECO:0000256|ARBA:ARBA00022989, KW ECO:0000256|RuleBase:RU362117}; KW Transport {ECO:0000256|ARBA:ARBA00022448, ECO:0000256|RuleBase:RU362117}; KW Ubiquinone {ECO:0000256|ARBA:ARBA00023075}. FT TRANSMEM 26..48 FT /note="Helical" FT /evidence="ECO:0000256|RuleBase:RU362117" FT TRANSMEM 77..99 FT /note="Helical" FT /evidence="ECO:0000256|RuleBase:RU362117" FT TRANSMEM 111..129 FT /note="Helical" FT /evidence="ECO:0000256|RuleBase:RU362117" FT TRANSMEM 136..154 FT /note="Helical" FT /evidence="ECO:0000256|RuleBase:RU362117" FT TRANSMEM 174..196 FT /note="Helical" FT /evidence="ECO:0000256|RuleBase:RU362117" FT TRANSMEM 225..242 FT /note="Helical" FT /evidence="ECO:0000256|RuleBase:RU362117" FT TRANSMEM 284..303 FT /note="Helical" FT /evidence="ECO:0000256|RuleBase:RU362117" FT TRANSMEM 315..335 FT /note="Helical" FT /evidence="ECO:0000256|RuleBase:RU362117" FT TRANSMEM 341..362 FT /note="Helical" FT /evidence="ECO:0000256|RuleBase:RU362117" FT DOMAIN 1..205 FT /note="Cytochrome b/b6 N-terminal region profile" FT /evidence="ECO:0000259|PROSITE:PS51002" FT DOMAIN 206..368 FT /note="Cytochrome b/b6 C-terminal region profile" FT /evidence="ECO:0000259|PROSITE:PS51003" FT BINDING 79 FT /ligand="heme b" FT /ligand_id="ChEBI:CHEBI:60344" FT /ligand_label="b562" FT /ligand_part="Fe" FT /ligand_part_id="ChEBI:CHEBI:18248" FT /note="axial binding residue" FT /evidence="ECO:0000256|PIRSR:PIRSR038885-2" FT BINDING 93 FT /ligand="heme b" FT /ligand_id="ChEBI:CHEBI:60344" FT /ligand_label="b566" FT /ligand_part="Fe" FT /ligand_part_id="ChEBI:CHEBI:18248" FT /note="axial binding residue" FT /evidence="ECO:0000256|PIRSR:PIRSR038885-2" FT BINDING 178 FT /ligand="heme b" FT /ligand_id="ChEBI:CHEBI:60344" FT /ligand_label="b562" FT /ligand_part="Fe" FT /ligand_part_id="ChEBI:CHEBI:18248" FT /note="axial binding residue" FT /evidence="ECO:0000256|PIRSR:PIRSR038885-2" FT BINDING 192 FT /ligand="heme b" FT /ligand_id="ChEBI:CHEBI:60344" FT /ligand_label="b566" FT /ligand_part="Fe" FT /ligand_part_id="ChEBI:CHEBI:18248" FT /note="axial binding residue" FT /evidence="ECO:0000256|PIRSR:PIRSR038885-2" FT BINDING 197 FT /ligand="a ubiquinone" FT /ligand_id="ChEBI:CHEBI:16389" FT /evidence="ECO:0000256|PIRSR:PIRSR038885-1" FT NON_TER 1 FT /evidence="ECO:0000313|EMBL:AAQ90240.1" FT NON_TER 368 FT /evidence="ECO:0000313|EMBL:AAQ90240.1" SQ SEQUENCE 368 AA; 41303 MW; 4681E3A041646F00 CRC64; RKNHPLLKIM NHSFIDLPTP SNISSWWNXG SLLGICLMIQ ILTGLFLAMH YTSDTATAFS SVVHICRDVN YGWLIRYLHA NGASMFFICL FIHVGRGIYY GSYVLSETWN IGIILLLTTM ATAFVGYVLP WGQMSLWGAT VITNLLSAIP YIGNTLVEWI WGGFSVDKAT LTRFFAFHFI LPFIITAFVL VHLLFLHETG SNNPSGLNSD SDKIPFHPYY TIKDLLGILL LLMVLIILAL FFPDALGDPD NYIPANPLNT PAHIKPEWYF LFAYAILRSI PNKLGGVLAL ILSILILATF PLLNNSKQHG LIFRPISQII YWTFVANLLV LTWIGGQPVE YPFTVIGQIA SISYFTIIII LMPMSKLS //