ID A0A059P8S2_9HEMI Unreviewed; 144 AA. AC A0A059P8S2; DT 03-SEP-2014, integrated into UniProtKB/TrEMBL. DT 03-SEP-2014, sequence version 1. DT 24-JUL-2024, entry version 31. DE RecName: Full=Cytochrome b {ECO:0000256|ARBA:ARBA00013531, ECO:0000256|RuleBase:RU362117}; DE Flags: Fragment; GN Name=cytb {ECO:0000313|EMBL:AFN70016.1}; OS Macrosemia matsumurai. OG Mitochondrion {ECO:0000313|EMBL:AFN70016.1}. OC Eukaryota; Metazoa; Ecdysozoa; Arthropoda; Hexapoda; Insecta; Pterygota; OC Neoptera; Paraneoptera; Hemiptera; Auchenorrhyncha; Cicadoidea; Cicadidae; OC Cicadinae; Dundubiini; Macrosemia. OX NCBI_TaxID=1195090 {ECO:0000313|EMBL:AFN70016.1}; RN [1] {ECO:0000313|EMBL:AFN70016.1} RP NUCLEOTIDE SEQUENCE. RA Huo W.X.; RL Submitted (JUL-2011) 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|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 -!- SUBUNIT: The main subunits of complex b-c1 are: cytochrome b, CC cytochrome c1 and the Rieske protein. {ECO:0000256|ARBA:ARBA00011649}. 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. {ECO:0000256|PROSITE- CC ProRule:PRU00967, 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; JN377626; AFN70016.1; -; Genomic_DNA. DR AlphaFoldDB; A0A059P8S2; -. DR GO; GO:0005750; C:mitochondrial respiratory chain complex III; IEA:TreeGrafter. DR GO; GO:0046872; F:metal ion binding; IEA:UniProtKB-UniRule. 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; 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; IPR016174; Di-haem_cyt_TM. DR PANTHER; PTHR19271; CYTOCHROME B; 1. DR PANTHER; PTHR19271:SF16; CYTOCHROME B; 1. DR Pfam; PF00032; Cytochrom_B_C; 1. DR Pfam; PF13631; Cytochrom_B_N_2; 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, ECO:0000256|PROSITE- KW ProRule:PRU00967}; KW Heme {ECO:0000256|ARBA:ARBA00022617, ECO:0000256|RuleBase:RU362117}; KW Iron {ECO:0000256|ARBA:ARBA00023004, ECO:0000256|RuleBase:RU362117}; KW Membrane {ECO:0000256|ARBA:ARBA00023136, ECO:0000256|PROSITE- KW ProRule:PRU00967}; KW Metal-binding {ECO:0000256|ARBA:ARBA00022723, KW ECO:0000256|RuleBase:RU362117}; 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, ECO:0000256|PROSITE- KW ProRule:PRU00967}; KW Transmembrane helix {ECO:0000256|ARBA:ARBA00022989, ECO:0000256|PROSITE- KW ProRule:PRU00967}; KW Transport {ECO:0000256|ARBA:ARBA00022448, ECO:0000256|PROSITE- KW ProRule:PRU00967}; Ubiquinone {ECO:0000256|ARBA:ARBA00023075}. FT TRANSMEM 6..27 FT /note="Helical" FT /evidence="ECO:0000256|RuleBase:RU362117" FT TRANSMEM 39..61 FT /note="Helical" FT /evidence="ECO:0000256|RuleBase:RU362117" FT TRANSMEM 81..104 FT /note="Helical" FT /evidence="ECO:0000256|RuleBase:RU362117" FT DOMAIN 1..70 FT /note="Cytochrome b/b6 N-terminal region profile" FT /evidence="ECO:0000259|PROSITE:PS51002" FT DOMAIN 71..144 FT /note="Cytochrome b/b6 C-terminal region profile" FT /evidence="ECO:0000259|PROSITE:PS51003" FT NON_TER 1 FT /evidence="ECO:0000313|EMBL:AFN70016.1" FT NON_TER 144 FT /evidence="ECO:0000313|EMBL:AFN70016.1" SQ SEQUENCE 144 AA; 16578 MW; 37CEF693034F7D22 CRC64; FWGATVITNL LSAIPYLGLN LVNWIWGGFA VDNATLTRFY SLHFIMPFVI LSLTIIHLIF LHQTGSNNPL GLLSNIDKIP FHPYFSIKDM LGFLLTIMMF MLFIMCEPYM LSDPDNFTPA NPLITPNHIQ PEWYFLFAYA ILRS //