ID B0VX66_SINMA Unreviewed; 95 AA. AC B0VX66; DT 08-APR-2008, integrated into UniProtKB/TrEMBL. DT 08-APR-2008, sequence version 1. DT 27-NOV-2024, entry version 42. DE RecName: Full=Cytochrome b {ECO:0000256|ARBA:ARBA00013531}; DE AltName: Full=Complex III subunit 3 {ECO:0000256|ARBA:ARBA00031681}; DE AltName: Full=Complex III subunit III {ECO:0000256|ARBA:ARBA00032600}; DE AltName: Full=Cytochrome b-c1 complex subunit 3 {ECO:0000256|ARBA:ARBA00029812}; DE AltName: Full=Ubiquinol-cytochrome-c reductase complex cytochrome b subunit {ECO:0000256|ARBA:ARBA00032818}; DE Flags: Fragment; OS Sinomicrurus macclellandi (Macclelland's coral snake) (Calliophis OS macclellandi). OG Mitochondrion {ECO:0000313|EMBL:BAG09251.1}. OC Eukaryota; Metazoa; Chordata; Craniata; Vertebrata; Euteleostomi; OC Lepidosauria; Squamata; Bifurcata; Unidentata; Episquamata; Toxicofera; OC Serpentes; Colubroidea; Elapidae; Elapinae; Sinomicrurus. OX NCBI_TaxID=931069 {ECO:0000313|EMBL:BAG09251.1}; RN [1] {ECO:0000313|EMBL:BAG09251.1} RP NUCLEOTIDE SEQUENCE. RA Eguchi T.; RT "A comparison of nucleotide substitution rates of the mitochondrial DNA RT among the species of Elapidae and Viperidae."; RL Submitted (MAY-1994) 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 -!- SUBUNIT: The cytochrome bc1 complex contains 3 respiratory subunits CC (MT-CYB, CYC1 and UQCRFS1), 2 core proteins (UQCRC1 and UQCRC2) and CC probably 6 low-molecular weight proteins. CC {ECO:0000256|ARBA:ARBA00011660}. CC -!- SUBCELLULAR LOCATION: Mitochondrion inner membrane CC {ECO:0000256|ARBA:ARBA00004448}; Multi-pass membrane protein CC {ECO:0000256|ARBA:ARBA00004448}. 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; D31627; BAG09251.1; -; Genomic_DNA. DR AlphaFoldDB; B0VX66; -. DR GO; GO:0005743; C:mitochondrial inner membrane; IEA:UniProtKB-SubCell. DR GO; GO:0046872; F:metal ion binding; IEA:UniProtKB-KW. DR GO; GO:0008121; F:ubiquinol-cytochrome-c reductase activity; IEA:TreeGrafter. DR GO; GO:0006122; P:mitochondrial electron transport, ubiquinol to cytochrome c; IEA:TreeGrafter. DR InterPro; IPR005797; Cyt_b/b6_N. DR InterPro; IPR027387; Cytb/b6-like_sf. DR InterPro; IPR016174; Di-haem_cyt_TM. DR PANTHER; PTHR19271; CYTOCHROME B; 1. DR PANTHER; PTHR19271:SF16; CYTOCHROME B; 1. DR Pfam; PF00033; Cytochrome_B; 1. DR SUPFAM; SSF81342; Transmembrane di-heme cytochromes; 1. DR PROSITE; PS51002; CYTB_NTER; 1. PE 4: Predicted; KW Electron transport {ECO:0000256|ARBA:ARBA00022982}; KW Heme {ECO:0000256|ARBA:ARBA00022617}; Iron {ECO:0000256|ARBA:ARBA00023004}; KW Membrane {ECO:0000256|ARBA:ARBA00023136, ECO:0000256|SAM:Phobius}; KW Metal-binding {ECO:0000256|ARBA:ARBA00022723}; KW Mitochondrion {ECO:0000256|ARBA:ARBA00023128, ECO:0000313|EMBL:BAG09251.1}; KW Mitochondrion inner membrane {ECO:0000256|ARBA:ARBA00022792}; KW Respiratory chain {ECO:0000256|ARBA:ARBA00022660}; KW Transmembrane {ECO:0000256|ARBA:ARBA00022692, ECO:0000256|SAM:Phobius}; KW Transmembrane helix {ECO:0000256|ARBA:ARBA00022989, KW ECO:0000256|SAM:Phobius}; Transport {ECO:0000256|ARBA:ARBA00022448}; KW Ubiquinone {ECO:0000256|ARBA:ARBA00023075}. FT TRANSMEM 6..24 FT /note="Helical" FT /evidence="ECO:0000256|SAM:Phobius" FT TRANSMEM 45..67 FT /note="Helical" FT /evidence="ECO:0000256|SAM:Phobius" FT TRANSMEM 73..94 FT /note="Helical" FT /evidence="ECO:0000256|SAM:Phobius" FT DOMAIN 1..95 FT /note="Cytochrome b/b6 N-terminal region profile" FT /evidence="ECO:0000259|PROSITE:PS51002" FT NON_TER 1 FT /evidence="ECO:0000313|EMBL:BAG09251.1" FT NON_TER 95 FT /evidence="ECO:0000313|EMBL:BAG09251.1" SQ SEQUENCE 95 AA; 10692 MW; BFCA756C60C5338B CRC64; CLMFQITTGF FLAIHYTANI TLAFSSITHI SRDVPYGWIM QNTHAIAGSL FFICIYTHIA RGVYYGSYLN KEVWLSGTTL LIILVATAFF GYVLP //