ID A0A318TIA3_9BRAD Unreviewed; 691 AA.
AC A0A318TIA3;
DT 10-OCT-2018, integrated into UniProtKB/TrEMBL.
DT 10-OCT-2018, sequence version 1.
DT 27-MAR-2024, entry version 20.
DE RecName: Full=Cytochrome b {ECO:0000256|RuleBase:RU003385};
GN ORFNames=BJ122_10357 {ECO:0000313|EMBL:PYF04404.1};
OS Rhodopseudomonas faecalis.
OC Bacteria; Pseudomonadota; Alphaproteobacteria; Hyphomicrobiales;
OC Nitrobacteraceae; Rhodopseudomonas.
OX NCBI_TaxID=99655 {ECO:0000313|EMBL:PYF04404.1, ECO:0000313|Proteomes:UP000248148};
RN [1] {ECO:0000313|EMBL:PYF04404.1, ECO:0000313|Proteomes:UP000248148}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=JCM 11668 {ECO:0000313|EMBL:PYF04404.1,
RC ECO:0000313|Proteomes:UP000248148};
RA Goeker M.;
RT "Genomic Encyclopedia of Archaeal and Bacterial Type Strains, Phase II
RT (KMG-II): from individual species to whole genera.";
RL Submitted (JUN-2018) to the EMBL/GenBank/DDBJ databases.
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|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 c; Xref=ChEBI:CHEBI:61717;
CC Evidence={ECO:0000256|PIRSR:PIRSR602326-1};
CC Note=Binds 1 heme c group covalently per subunit.
CC {ECO:0000256|PIRSR:PIRSR602326-1};
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:PYF04404.1}.
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DR EMBL; QJTI01000003; PYF04404.1; -; Genomic_DNA.
DR AlphaFoldDB; A0A318TIA3; -.
DR OrthoDB; 9804503at2; -.
DR Proteomes; UP000248148; Unassembled WGS sequence.
DR GO; GO:0070469; C:respirasome; IEA:UniProtKB-KW.
DR GO; GO:0009055; F:electron transfer activity; IEA:InterPro.
DR GO; GO:0020037; F:heme binding; IEA:InterPro.
DR GO; GO:0046872; F:metal ion binding; IEA:UniProtKB-KW.
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 Gene3D; 1.10.760.10; Cytochrome c-like domain; 1.
DR Gene3D; 1.20.5.100; Cytochrome c1, transmembrane anchor, C-terminal; 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; IPR009056; Cyt_c-like_dom.
DR InterPro; IPR036909; Cyt_c-like_dom_sf.
DR InterPro; IPR002326; Cyt_c1.
DR InterPro; IPR021157; Cyt_c1_TM_anchor_C.
DR InterPro; IPR027387; Cytb/b6-like_sf.
DR InterPro; IPR048260; Cytochrome_b_C_euk/bac.
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; PF02167; Cytochrom_C1; 1.
DR Pfam; PF00033; Cytochrome_B; 1.
DR PRINTS; PR00603; CYTOCHROMEC1.
DR SUPFAM; SSF81648; a domain/subunit of cytochrome bc1 complex (Ubiquinol-cytochrome c reductase); 1.
DR SUPFAM; SSF46626; Cytochrome c; 1.
DR SUPFAM; SSF81496; Cytochrome c1 subunit of cytochrome bc1 complex (Ubiquinol-cytochrome c reductase), transmembrane anchor; 1.
DR SUPFAM; SSF81342; Transmembrane di-heme cytochromes; 1.
DR PROSITE; PS51003; CYTB_CTER; 1.
DR PROSITE; PS51002; CYTB_NTER; 1.
DR PROSITE; PS51007; CYTC; 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:PIRSR602326-1};
KW Iron {ECO:0000256|ARBA:ARBA00023004, ECO:0000256|PIRSR:PIRSR602326-1};
KW Membrane {ECO:0000256|ARBA:ARBA00023136, ECO:0000256|SAM:Phobius};
KW Metal-binding {ECO:0000256|ARBA:ARBA00022723,
KW ECO:0000256|PIRSR:PIRSR602326-1};
KW Mitochondrion {ECO:0000256|ARBA:ARBA00023128};
KW Mitochondrion inner membrane {ECO:0000256|ARBA:ARBA00022792};
KW Reference proteome {ECO:0000313|Proteomes:UP000248148};
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 42..66
FT /note="Helical"
FT /evidence="ECO:0000256|SAM:Phobius"
FT TRANSMEM 97..116
FT /note="Helical"
FT /evidence="ECO:0000256|SAM:Phobius"
FT TRANSMEM 128..148
FT /note="Helical"
FT /evidence="ECO:0000256|SAM:Phobius"
FT TRANSMEM 160..183
FT /note="Helical"
FT /evidence="ECO:0000256|SAM:Phobius"
FT TRANSMEM 195..215
FT /note="Helical"
FT /evidence="ECO:0000256|SAM:Phobius"
FT TRANSMEM 246..263
FT /note="Helical"
FT /evidence="ECO:0000256|SAM:Phobius"
FT TRANSMEM 305..325
FT /note="Helical"
FT /evidence="ECO:0000256|SAM:Phobius"
FT TRANSMEM 337..357
FT /note="Helical"
FT /evidence="ECO:0000256|SAM:Phobius"
FT TRANSMEM 363..386
FT /note="Helical"
FT /evidence="ECO:0000256|SAM:Phobius"
FT TRANSMEM 664..682
FT /note="Helical"
FT /evidence="ECO:0000256|SAM:Phobius"
FT DOMAIN 13..224
FT /note="Cytochrome b/b6 N-terminal region profile"
FT /evidence="ECO:0000259|PROSITE:PS51002"
FT DOMAIN 227..397
FT /note="Cytochrome b/b6 C-terminal region profile"
FT /evidence="ECO:0000259|PROSITE:PS51003"
FT DOMAIN 461..654
FT /note="Cytochrome c"
FT /evidence="ECO:0000259|PROSITE:PS51007"
FT BINDING 474
FT /ligand="heme c"
FT /ligand_id="ChEBI:CHEBI:61717"
FT /note="covalent"
FT /evidence="ECO:0000256|PIRSR:PIRSR602326-1"
FT BINDING 477
FT /ligand="heme c"
FT /ligand_id="ChEBI:CHEBI:61717"
FT /note="covalent"
FT /evidence="ECO:0000256|PIRSR:PIRSR602326-1"
FT BINDING 478
FT /ligand="heme c"
FT /ligand_id="ChEBI:CHEBI:61717"
FT /note="covalent"
FT /evidence="ECO:0000256|PIRSR:PIRSR602326-1"
FT BINDING 620
FT /ligand="heme c"
FT /ligand_id="ChEBI:CHEBI:61717"
FT /note="covalent"
FT /evidence="ECO:0000256|PIRSR:PIRSR602326-1"
SQ SEQUENCE 691 AA; 76991 MW; 49107BD85057FB03 CRC64;
MSGPSTYQPQ HKVLQWIEQR LPVMNFVNSS FVAWPTPRNL NYWWTFGAIL SMMLVVQIIT
GVVLAMHYTP HADMAFDSIE AIVRDVNYGW MMRNIHAAGA SMFFIAVYVH MFRGLYYGSY
KEPRELLWIL GVIIYLLMMA TGFMGYVLPW GQMSFWGATV ITNLFSAIPL VGDSIVTLLW
GGYSVGNPTL NRFFSLHYLL PFVIVGVVVL HVWAVHVTGQ NNPTGVEAKT EKDTVPFTPY
ATLKDLVGMS AFLMFFSWFI FYMPNYLGEA DNYIPANPGV TPPHIVPEWY YLPFYAILRA
IPNKLLGVVA MFGAILVLLF LPWLDSCKVR SSRYRPLAKR FFWAFVAVCL LLGWLGAKPA
EGVYTVMSQV LTACYFAYFL VVLPVLSRKE KTLPLPNSIA DDVLASSASK GKSLASVAVI
AALAGTLVVG ASQDAKASAG GNVPPSLEWS FAGPFGTFDR AQLQRGYKVY KEVCSACHSM
KYVHYRNLTE PGGPGFTVEQ AKAFAAEAAP IKDGPNDSGE MFDRPRRLAD PFPSPYPNEA
AARFSNGGAA PPDLSVITKA RSYERGFPQF LIDLVTQFQE QGPNYVAGLL RGYEDTPPEG
FVLPDGAYYN KYYPGHAIKM PQMLMDGVVT YEDDTPNTAD QYAKDVTAFL MWAAEPHMEA
RKRLGLQVMI FLALLTGLLY FTKRRVWANA H
//
