COXX_PARUW
ID COXX_PARUW Reviewed; 283 AA.
AC Q6MBY2;
DT 08-APR-2008, integrated into UniProtKB/Swiss-Prot.
DT 05-JUL-2004, sequence version 1.
DT 03-AUG-2022, entry version 92.
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}; OrderedLocusNames=pc1193;
OS Protochlamydia amoebophila (strain UWE25).
OC Bacteria; Chlamydiae; Parachlamydiales; Parachlamydiaceae;
OC Candidatus Protochlamydia.
OX NCBI_TaxID=264201;
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=UWE25;
RX PubMed=15073324; DOI=10.1126/science.1096330;
RA Horn M., Collingro A., Schmitz-Esser S., Beier C.L., Purkhold U.,
RA Fartmann B., Brandt P., Nyakatura G.J., Droege M., Frishman D., Rattei T.,
RA Mewes H.-W., Wagner M.;
RT "Illuminating the evolutionary history of chlamydiae.";
RL Science 304:728-730(2004).
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; BX908798; CAF23917.1; -; Genomic_DNA.
DR RefSeq; WP_011175743.1; NC_005861.1.
DR AlphaFoldDB; Q6MBY2; -.
DR SMR; Q6MBY2; -.
DR STRING; 264201.pc1193; -.
DR EnsemblBacteria; CAF23917; CAF23917; PC_RS05750.
DR KEGG; pcu:PC_RS05750; -.
DR eggNOG; COG0109; Bacteria.
DR HOGENOM; CLU_029631_0_0_0; -.
DR OMA; QFFWQFP; -.
DR OrthoDB; 1875497at2; -.
DR UniPathway; UPA00834; UER00712.
DR Proteomes; UP000000529; 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; IPR044878; UbiA_sf.
DR PANTHER; PTHR43448; PTHR43448; 1.
DR Pfam; PF01040; UbiA; 1.
DR TIGRFAMs; TIGR01473; cyoE_ctaB; 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..283
FT /note="Protoheme IX farnesyltransferase"
FT /id="PRO_0000327124"
FT TRANSMEM 6..26
FT /note="Helical"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00154"
FT TRANSMEM 35..55
FT /note="Helical"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00154"
FT TRANSMEM 85..105
FT /note="Helical"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00154"
FT TRANSMEM 106..126
FT /note="Helical"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00154"
FT TRANSMEM 131..151
FT /note="Helical"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00154"
FT TRANSMEM 160..180
FT /note="Helical"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00154"
FT TRANSMEM 207..227
FT /note="Helical"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00154"
FT TRANSMEM 230..250
FT /note="Helical"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00154"
FT TRANSMEM 262..282
FT /note="Helical"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00154"
SQ SEQUENCE 283 AA; 31731 MW; 15DBA02BD3BB79B3 CRC64;
MINYYLLLTK PGIILGNLVT VMAGFLLASK GQFQFGLFFS TILGLAFIMA SGCVFNNYID
LEKDRLMKRT QNRPLVIGVI FEKQAIVFGL ALAIVGAIIL YFYTNLLTLV IAELGFIIYV
FFYSIWKSRT VYGTAIGSLA GAVPPLVGYC AVSNQLDLGA FILFAMMVFW QMPHFFSIAI
YRLQDYSAAN IPVLPLKKGI QITKIRILLY IIIFTLTSSL LTFFHFTGSL YLILTIGLGL
TWLLMGLRGL KTSNDQQWAQ QMFRFSLVII SVLSLTIPFD LVN
