ID   UCRI_RICTY              Reviewed;         177 AA.
AC   Q68XA0;
DT   15-MAY-2007, integrated into UniProtKB/Swiss-Prot.
DT   11-OCT-2004, sequence version 1.
DT   27-MAR-2024, entry version 106.
DE   RecName: Full=Ubiquinol-cytochrome c reductase iron-sulfur subunit;
DE            EC=7.1.1.8;
DE   AltName: Full=Rieske iron-sulfur protein;
DE            Short=RISP;
GN   Name=petA; OrderedLocusNames=RT0261;
OS   Rickettsia typhi (strain ATCC VR-144 / Wilmington).
OC   Bacteria; Pseudomonadota; Alphaproteobacteria; Rickettsiales;
OC   Rickettsiaceae; Rickettsieae; Rickettsia; typhus group.
OX   NCBI_TaxID=257363;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=ATCC VR-144 / Wilmington;
RX   PubMed=15317790; DOI=10.1128/jb.186.17.5842-5855.2004;
RA   McLeod M.P., Qin X., Karpathy S.E., Gioia J., Highlander S.K., Fox G.E.,
RA   McNeill T.Z., Jiang H., Muzny D., Jacob L.S., Hawes A.C., Sodergren E.,
RA   Gill R., Hume J., Morgan M., Fan G., Amin A.G., Gibbs R.A., Hong C.,
RA   Yu X.-J., Walker D.H., Weinstock G.M.;
RT   "Complete genome sequence of Rickettsia typhi and comparison with sequences
RT   of other Rickettsiae.";
RL   J. Bacteriol. 186:5842-5855(2004).
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   -!- CATALYTIC ACTIVITY:
CC       Reaction=a quinol + 2 Fe(III)-[cytochrome c](out) = a quinone + 2
CC         Fe(II)-[cytochrome c](out) + 2 H(+)(out); Xref=Rhea:RHEA:11484,
CC         Rhea:RHEA-COMP:10350, Rhea:RHEA-COMP:14399, ChEBI:CHEBI:15378,
CC         ChEBI:CHEBI:24646, ChEBI:CHEBI:29033, ChEBI:CHEBI:29034,
CC         ChEBI:CHEBI:132124; EC=7.1.1.8;
CC   -!- COFACTOR:
CC       Name=[2Fe-2S] cluster; Xref=ChEBI:CHEBI:190135;
CC         Evidence={ECO:0000255|PROSITE-ProRule:PRU00628};
CC       Note=Binds 1 [2Fe-2S] cluster per subunit. {ECO:0000255|PROSITE-
CC       ProRule:PRU00628};
CC   -!- SUBUNIT: The main subunits of complex b-c1 are: cytochrome b,
CC       cytochrome c1 and the Rieske protein.
CC   -!- SUBCELLULAR LOCATION: Cell membrane {ECO:0000305}; Single-pass membrane
CC       protein {ECO:0000305}.
CC   -!- MISCELLANEOUS: The Rieske protein is a high potential 2Fe-2S protein.
CC   -!- SIMILARITY: Belongs to the Rieske iron-sulfur protein family.
CC       {ECO:0000305}.
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DR   EMBL; AE017197; AAU03742.1; -; Genomic_DNA.
DR   RefSeq; WP_011190727.1; NC_006142.1.
DR   AlphaFoldDB; Q68XA0; -.
DR   SMR; Q68XA0; -.
DR   KEGG; rty:RT0261; -.
DR   eggNOG; COG0723; Bacteria.
DR   HOGENOM; CLU_055690_0_2_5; -.
DR   OrthoDB; 9767869at2; -.
DR   Proteomes; UP000000604; Chromosome.
DR   GO; GO:0005737; C:cytoplasm; IEA:UniProt.
DR   GO; GO:0043231; C:intracellular membrane-bounded organelle; IEA:UniProt.
DR   GO; GO:0005886; C:plasma membrane; IEA:UniProtKB-SubCell.
DR   GO; GO:0051537; F:2 iron, 2 sulfur cluster binding; IEA:UniProtKB-KW.
DR   GO; GO:0046872; F:metal ion binding; IEA:UniProtKB-KW.
DR   GO; GO:0008121; F:ubiquinol-cytochrome-c reductase activity; IEA:UniProtKB-EC.
DR   CDD; cd03470; Rieske_cytochrome_bc1; 1.
DR   Gene3D; 2.102.10.10; Rieske [2Fe-2S] iron-sulphur domain; 1.
DR   Gene3D; 1.20.5.510; Single helix bin; 1.
DR   InterPro; IPR017941; Rieske_2Fe-2S.
DR   InterPro; IPR036922; Rieske_2Fe-2S_sf.
DR   InterPro; IPR014349; Rieske_Fe-S_prot.
DR   InterPro; IPR005805; Rieske_Fe-S_prot_C.
DR   InterPro; IPR006311; TAT_signal.
DR   InterPro; IPR019546; TAT_signal_bac_arc.
DR   InterPro; IPR019470; Ubiq_cytC_Rdtase_Fe-S_su_TAT.
DR   InterPro; IPR006317; Ubiquinol_cyt_c_Rdtase_Fe-S-su.
DR   NCBIfam; TIGR01416; Rieske_proteo; 1.
DR   NCBIfam; TIGR01409; TAT_signal_seq; 1.
DR   PANTHER; PTHR10134; CYTOCHROME B-C1 COMPLEX SUBUNIT RIESKE, MITOCHONDRIAL; 1.
DR   PANTHER; PTHR10134:SF20; CYTOCHROME B-C1 COMPLEX SUBUNIT RIESKE, MITOCHONDRIAL-RELATED; 1.
DR   Pfam; PF00355; Rieske; 1.
DR   Pfam; PF10399; UCR_Fe-S_N; 1.
DR   PRINTS; PR00162; RIESKE.
DR   SUPFAM; SSF50022; ISP domain; 1.
DR   PROSITE; PS51296; RIESKE; 1.
DR   PROSITE; PS51318; TAT; 1.
PE   3: Inferred from homology;
KW   2Fe-2S; Cell membrane; Disulfide bond; Electron transport; Iron;
KW   Iron-sulfur; Membrane; Metal-binding; Translocase; Transmembrane;
KW   Transmembrane helix; Transport.
FT   CHAIN           1..177
FT                   /note="Ubiquinol-cytochrome c reductase iron-sulfur
FT                   subunit"
FT                   /id="PRO_0000286644"
FT   TRANSMEM        18..38
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
FT   DOMAIN          88..175
FT                   /note="Rieske"
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU00628"
FT   BINDING         120
FT                   /ligand="[2Fe-2S] cluster"
FT                   /ligand_id="ChEBI:CHEBI:190135"
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU00628"
FT   BINDING         122
FT                   /ligand="[2Fe-2S] cluster"
FT                   /ligand_id="ChEBI:CHEBI:190135"
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU00628"
FT   BINDING         139
FT                   /ligand="[2Fe-2S] cluster"
FT                   /ligand_id="ChEBI:CHEBI:190135"
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU00628"
FT   BINDING         142
FT                   /ligand="[2Fe-2S] cluster"
FT                   /ligand_id="ChEBI:CHEBI:190135"
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU00628"
FT   DISULFID        125..141
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU00628"
SQ   SEQUENCE   177 AA;  19191 MW;  3ADC9B2B6E69DB59 CRC64;
     MSDTEDNRNK QTTRRDFIVL TASSVAAVGA ACAFWPIIDS LNPSTDVLAL SSIEVDLSSI
     AIGQTVTVKW QGKPIFITNR TPDGIASARA VKMSELIDPE KDEVRVKAGH DNWLVTIGIC
     THLGCVPLSN QGEYNGWFCP CHGSQYDSSG RVRKGPASLN LVVPPYIFIS DTKIRIG
//