ID   COXX_BARBK              Reviewed;         311 AA.
AC   A1URX1;
DT   08-APR-2008, integrated into UniProtKB/Swiss-Prot.
DT   06-FEB-2007, sequence version 1.
DT   03-AUG-2022, entry version 83.
DE   RecName: Full=Protoheme IX farnesyltransferase {ECO:0000255|HAMAP-Rule:MF_00154};
DE            EC=2.5.1.141 {ECO:0000255|HAMAP-Rule:MF_00154};
DE   AltName: Full=Heme B farnesyltransferase {ECO:0000255|HAMAP-Rule:MF_00154};
DE   AltName: Full=Heme O synthase {ECO:0000255|HAMAP-Rule:MF_00154};
GN   Name=ctaB {ECO:0000255|HAMAP-Rule:MF_00154};
GN   OrderedLocusNames=BARBAKC583_0405;
OS   Bartonella bacilliformis (strain ATCC 35685 / NCTC 12138 / KC583).
OC   Bacteria; Proteobacteria; Alphaproteobacteria; Hyphomicrobiales;
OC   Bartonellaceae; Bartonella.
OX   NCBI_TaxID=360095;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=ATCC 35685 / NCTC 12138 / KC583;
RA   Hendrix L., Mohamoud Y., Radune D., Shvartsbeyn A., Daugherty S.,
RA   Dodson R., Durkin A.S., Harkins D., Huot H., Kothari S.P., Madupu R.,
RA   Li J., Nelson W.C., Shrivastava S., Giglio M.G., Haft D., Selengut J.,
RA   Fraser-Ligget C., Seshadri R.;
RL   Submitted (DEC-2006) to the EMBL/GenBank/DDBJ databases.
CC   -!- FUNCTION: Converts heme B (protoheme IX) to heme O by substitution of
CC       the vinyl group on carbon 2 of heme B porphyrin ring with a
CC       hydroxyethyl farnesyl side group. {ECO:0000255|HAMAP-Rule:MF_00154}.
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=(2E,6E)-farnesyl diphosphate + H2O + heme b = diphosphate +
CC         Fe(II)-heme o; Xref=Rhea:RHEA:28070, ChEBI:CHEBI:15377,
CC         ChEBI:CHEBI:33019, ChEBI:CHEBI:60344, ChEBI:CHEBI:60530,
CC         ChEBI:CHEBI:175763; EC=2.5.1.141; Evidence={ECO:0000255|HAMAP-
CC         Rule:MF_00154};
CC   -!- PATHWAY: Porphyrin-containing compound metabolism; heme O biosynthesis;
CC       heme O from protoheme: step 1/1. {ECO:0000255|HAMAP-Rule:MF_00154}.
CC   -!- SUBCELLULAR LOCATION: Cell inner membrane {ECO:0000255|HAMAP-
CC       Rule:MF_00154}; Multi-pass membrane protein {ECO:0000255|HAMAP-
CC       Rule:MF_00154}.
CC   -!- MISCELLANEOUS: Carbon 2 of the heme B porphyrin ring is defined
CC       according to the Fischer nomenclature. {ECO:0000255|HAMAP-
CC       Rule:MF_00154}.
CC   -!- SIMILARITY: Belongs to the UbiA prenyltransferase family. Protoheme IX
CC       farnesyltransferase subfamily. {ECO:0000255|HAMAP-Rule:MF_00154}.
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DR   EMBL; CP000524; ABM44828.1; -; Genomic_DNA.
DR   RefSeq; WP_005766421.1; NC_008783.1.
DR   AlphaFoldDB; A1URX1; -.
DR   SMR; A1URX1; -.
DR   STRING; 360095.BARBAKC583_0405; -.
DR   EnsemblBacteria; ABM44828; ABM44828; BARBAKC583_0405.
DR   KEGG; bbk:BARBAKC583_0405; -.
DR   PATRIC; fig|360095.6.peg.388; -.
DR   eggNOG; COG0109; Bacteria.
DR   HOGENOM; CLU_029631_0_2_5; -.
DR   OMA; QFFWQFP; -.
DR   OrthoDB; 1875497at2; -.
DR   UniPathway; UPA00834; UER00712.
DR   Proteomes; UP000000643; Chromosome.
DR   GO; GO:0016021; C:integral component of membrane; IEA:UniProtKB-KW.
DR   GO; GO:0005886; C:plasma membrane; IEA:UniProtKB-SubCell.
DR   GO; GO:0008495; F:protoheme IX farnesyltransferase activity; IEA:UniProtKB-UniRule.
DR   GO; GO:0048034; P:heme O biosynthetic process; IEA:UniProtKB-UniRule.
DR   CDD; cd13957; PT_UbiA_Cox10; 1.
DR   Gene3D; 1.10.357.140; -; 1.
DR   HAMAP; MF_00154; CyoE_CtaB; 1.
DR   InterPro; IPR006369; Protohaem_IX_farnesylTrfase.
DR   InterPro; IPR000537; UbiA_prenyltransferase.
DR   InterPro; IPR030470; UbiA_prenylTrfase_CS.
DR   InterPro; IPR044878; UbiA_sf.
DR   PANTHER; PTHR43448; PTHR43448; 1.
DR   Pfam; PF01040; UbiA; 1.
DR   TIGRFAMs; TIGR01473; cyoE_ctaB; 1.
DR   PROSITE; PS00943; UBIA; 1.
PE   3: Inferred from homology;
KW   Cell inner membrane; Cell membrane; Heme biosynthesis; Membrane;
KW   Reference proteome; Transferase; Transmembrane; Transmembrane helix.
FT   CHAIN           1..311
FT                   /note="Protoheme IX farnesyltransferase"
FT                   /id="PRO_0000327010"
FT   TRANSMEM        32..52
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00154"
FT   TRANSMEM        53..73
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00154"
FT   TRANSMEM        98..118
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00154"
FT   TRANSMEM        120..140
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00154"
FT   TRANSMEM        153..173
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00154"
FT   TRANSMEM        180..200
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00154"
FT   TRANSMEM        226..246
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00154"
FT   TRANSMEM        248..268
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00154"
FT   TRANSMEM        285..305
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00154"
SQ   SEQUENCE   311 AA;  34330 MW;  0FA329A8C40E5E80 CRC64;
     MSISGKLLTE DNQLISPVAT VYDYIALLKP RVMSLVVFTA LVGLVVSPVV VDPLYGFVAI
     LCIAIGGGGA GALNMWYEAD IDALMKRTQK RPIPSGKISR GKALIFSSIL SVLSVFLMGV
     LINWFSALFL AFTIFFYIVI YTIWLKRITP QNIVIGGAAG AFPPMIGWAA ATGTISLDSF
     LLFLIIFMWT PPHFWSLCLF SSSDYEAAGI PMMPNVRGER STKNQILVYA IITAVCAIGP
     YITGYAGIIY GISSTILGGM FVYFAYRLWK TDTHDETVPI AKKTFFFSLF YLGAIFGILL
     IEFLIWHFII R