ID A0A370DE91_9GAMM Unreviewed; 413 AA.
AC A0A370DE91;
DT 07-NOV-2018, integrated into UniProtKB/TrEMBL.
DT 07-NOV-2018, sequence version 1.
DT 27-MAR-2024, entry version 20.
DE RecName: Full=Cytochrome b {ECO:0000256|ARBA:ARBA00013531, ECO:0000256|RuleBase:RU003385};
GN ORFNames=DIZ78_14640 {ECO:0000313|EMBL:RDH83235.1};
OS endosymbiont of Escarpia spicata.
OC Bacteria; Pseudomonadota; Gammaproteobacteria; sulfur-oxidizing symbionts.
OX NCBI_TaxID=2200908 {ECO:0000313|EMBL:RDH83235.1, ECO:0000313|Proteomes:UP000254771};
RN [1] {ECO:0000313|EMBL:RDH83235.1, ECO:0000313|Proteomes:UP000254771}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=A1462 {ECO:0000313|EMBL:RDH83235.1};
RX PubMed=30022157;
RA Li Y., Liles M.R., Halanych K.M.;
RT "Endosymbiont genomes yield clues of tubeworm success.";
RL ISME J. 0:0-0(2018).
CC -!- FUNCTION: Component of the ubiquinol-cytochrome c reductase complex
CC (complex III or cytochrome b-c1 complex), which is a respiratory chain
CC that generates an electrochemical potential coupled to ATP synthesis.
CC {ECO:0000256|ARBA:ARBA00002444, ECO:0000256|RuleBase:RU003385}.
CC -!- COFACTOR:
CC Name=heme b; Xref=ChEBI:CHEBI:60344;
CC Evidence={ECO:0000256|RuleBase:RU003385};
CC Note=Binds 2 heme groups non-covalently.
CC {ECO:0000256|RuleBase:RU003385};
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 main subunits of complex b-c1 are: cytochrome b,
CC cytochrome c1 and the Rieske protein. {ECO:0000256|ARBA:ARBA00011649,
CC ECO:0000256|RuleBase:RU003385}.
CC -!- SUBCELLULAR LOCATION: Membrane {ECO:0000256|ARBA:ARBA00004141}; Multi-
CC pass membrane protein {ECO:0000256|ARBA:ARBA00004141}.
CC -!- SIMILARITY: Belongs to the cytochrome b family.
CC {ECO:0000256|RuleBase:RU003385}.
CC -!- CAUTION: The sequence shown here is derived from an EMBL/GenBank/DDBJ
CC whole genome shotgun (WGS) entry which is preliminary data.
CC {ECO:0000313|EMBL:RDH83235.1}.
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; QFXE01000020; RDH83235.1; -; Genomic_DNA.
DR AlphaFoldDB; A0A370DE91; -.
DR Proteomes; UP000254771; Unassembled WGS sequence.
DR GO; GO:0045275; C:respiratory chain complex III; IEA:InterPro.
DR GO; GO:0046872; F:metal ion binding; IEA:UniProtKB-KW.
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; 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; IPR048259; Cytochrome_b_N_euk/bac.
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; 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:RU003385};
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|SAM:Phobius};
KW Metal-binding {ECO:0000256|ARBA:ARBA00022723,
KW ECO:0000256|PIRSR:PIRSR038885-2};
KW Reference proteome {ECO:0000313|Proteomes:UP000254771};
KW Respiratory chain {ECO:0000256|ARBA:ARBA00022660,
KW ECO:0000256|RuleBase:RU003385};
KW Transmembrane {ECO:0000256|ARBA:ARBA00022692,
KW ECO:0000256|RuleBase:RU003385};
KW Transmembrane helix {ECO:0000256|ARBA:ARBA00022989,
KW ECO:0000256|SAM:Phobius};
KW Transport {ECO:0000256|ARBA:ARBA00022448, ECO:0000256|RuleBase:RU003385}.
FT TRANSMEM 36..60
FT /note="Helical"
FT /evidence="ECO:0000256|SAM:Phobius"
FT TRANSMEM 88..108
FT /note="Helical"
FT /evidence="ECO:0000256|SAM:Phobius"
FT TRANSMEM 120..141
FT /note="Helical"
FT /evidence="ECO:0000256|SAM:Phobius"
FT TRANSMEM 147..166
FT /note="Helical"
FT /evidence="ECO:0000256|SAM:Phobius"
FT TRANSMEM 187..208
FT /note="Helical"
FT /evidence="ECO:0000256|SAM:Phobius"
FT TRANSMEM 251..276
FT /note="Helical"
FT /evidence="ECO:0000256|SAM:Phobius"
FT TRANSMEM 319..337
FT /note="Helical"
FT /evidence="ECO:0000256|SAM:Phobius"
FT TRANSMEM 349..370
FT /note="Helical"
FT /evidence="ECO:0000256|SAM:Phobius"
FT TRANSMEM 376..395
FT /note="Helical"
FT /evidence="ECO:0000256|SAM:Phobius"
FT DOMAIN 7..218
FT /note="Cytochrome b/b6 N-terminal region profile"
FT /evidence="ECO:0000259|PROSITE:PS51002"
FT DOMAIN 232..409
FT /note="Cytochrome b/b6 C-terminal region profile"
FT /evidence="ECO:0000259|PROSITE:PS51003"
FT BINDING 90
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 104
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 191
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 205
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 210
FT /ligand="a ubiquinone"
FT /ligand_id="ChEBI:CHEBI:16389"
FT /evidence="ECO:0000256|PIRSR:PIRSR038885-1"
SQ SEQUENCE 413 AA; 47031 MW; A0641827B374838E CRC64;
MSMMQNFVGW IDDRFPMTKV WNEHLAQYYA PKNFNFWYFM GSLAMLVLVL QILTGVWLAM
SYKPDAEMAF GSVEYIMRDV DWGWLIRYMH STGASAFFIV IYLHMFRGLM YGSHRKPREL
LWIIGVIIYL AMMATAFMGY LLPWGQMSYW GAQVIVNLFS AVPVIGPDLG VWIRGDYVIS
DATLNRFFAL HFLLPFVLAA LVFVHIVALH KVGSNNPDGI EIKKGPKGNK WSDTAPADGI
PFHPYYSVKD IAGIAGFLFL FAAVVFFAPE MGGYFIEHPN FEPANPLKTP DHIAPVWYFT
PFYAILRAVP SLMGSAFPGV VAMFGSILVM FFLPWLDRSP VKSVRYKGTL YKVILGLFVV
DFFVLGFLGT QPTTDLYIIM AQIGTIYYFA FFLLMPIYSK MDKTKPVPER VTE
//
