COXX_PROM9
ID COXX_PROM9 Reviewed; 333 AA.
AC Q31C87;
DT 08-APR-2008, integrated into UniProtKB/Swiss-Prot.
DT 06-DEC-2005, sequence version 1.
DT 25-MAY-2022, entry version 87.
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=PMT9312_0447;
OS Prochlorococcus marinus (strain MIT 9312).
OC Bacteria; Cyanobacteria; Synechococcales; Prochlorococcaceae;
OC Prochlorococcus.
OX NCBI_TaxID=74546;
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=MIT 9312;
RG US DOE Joint Genome Institute;
RA Copeland A., Lucas S., Lapidus A., Barry K., Detter J.C., Glavina T.,
RA Hammon N., Israni S., Pitluck S., Thiel J., Schmutz J., Larimer F.,
RA Land M., Kyrpides N., Lykidis A., Richardson P.;
RT "Complete sequence of Prochlorococcus marinus str. MIT 9312.";
RL Submitted (JUL-2005) 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; CP000111; ABB49508.1; -; Genomic_DNA.
DR RefSeq; WP_011376007.1; NC_007577.1.
DR AlphaFoldDB; Q31C87; -.
DR SMR; Q31C87; -.
DR STRING; 74546.PMT9312_0447; -.
DR EnsemblBacteria; ABB49508; ABB49508; PMT9312_0447.
DR KEGG; pmi:PMT9312_0447; -.
DR eggNOG; COG0109; Bacteria.
DR HOGENOM; CLU_029631_0_2_3; -.
DR OMA; QFFWQFP; -.
DR OrthoDB; 1875497at2; -.
DR UniPathway; UPA00834; UER00712.
DR Proteomes; UP000002715; 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 Transferase; Transmembrane; Transmembrane helix.
FT CHAIN 1..333
FT /note="Protoheme IX farnesyltransferase"
FT /id="PRO_0000327117"
FT TRANSMEM 64..84
FT /note="Helical"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00154"
FT TRANSMEM 110..130
FT /note="Helical"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00154"
FT TRANSMEM 133..153
FT /note="Helical"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00154"
FT TRANSMEM 161..181
FT /note="Helical"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00154"
FT TRANSMEM 189..209
FT /note="Helical"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00154"
FT TRANSMEM 246..266
FT /note="Helical"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00154"
FT TRANSMEM 287..307
FT /note="Helical"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00154"
SQ SEQUENCE 333 AA; 35998 MW; AC8AC16538ED05FA CRC64;
MNSSNLENFN YKSSIRDEVV PSRKRLTLPP WLEVAKPRLI PLLLATTLGG MALTEEWPLS
SPKLICTLGG GALAAAAAGA LNCLWEMELD KRMIRTSKRA LPSGKLSSET VFLAAVSCTL
AASMLLISGV NYLAAGLTLL GLCSYVILYT VILKPRTTKN IVFGGVAGAI PPLVGASAAT
GHVGLSGWWL FGLVMLWTPA HFWALAILLK DDYASVGIPM LPSVKGSLFT AKAISRYGLA
TVLMSIMGVF ALPEGGLLYG IMLLPFNGRL LQLINKLKKS PDDLLRAKSL FRWSILYMFG
ICLLLLISRT QLSVEFEQQS MQIFFSIGSL LSN
