CTAA_ANAPZ
ID CTAA_ANAPZ Reviewed; 328 AA.
AC Q2GLK1;
DT 02-SEP-2008, integrated into UniProtKB/Swiss-Prot.
DT 21-MAR-2006, sequence version 1.
DT 03-AUG-2022, entry version 86.
DE RecName: Full=Heme A synthase {ECO:0000255|HAMAP-Rule:MF_01665};
DE Short=HAS {ECO:0000255|HAMAP-Rule:MF_01665};
DE EC=1.17.99.9 {ECO:0000255|HAMAP-Rule:MF_01665};
DE AltName: Full=Cytochrome aa3-controlling protein {ECO:0000255|HAMAP-Rule:MF_01665};
GN Name=ctaA {ECO:0000255|HAMAP-Rule:MF_01665}; OrderedLocusNames=APH_0123;
OS Anaplasma phagocytophilum (strain HZ).
OC Bacteria; Proteobacteria; Alphaproteobacteria; Rickettsiales;
OC Anaplasmataceae; Anaplasma; phagocytophilum group.
OX NCBI_TaxID=212042;
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=HZ;
RX PubMed=16482227; DOI=10.1371/journal.pgen.0020021;
RA Dunning Hotopp J.C., Lin M., Madupu R., Crabtree J., Angiuoli S.V.,
RA Eisen J.A., Seshadri R., Ren Q., Wu M., Utterback T.R., Smith S., Lewis M.,
RA Khouri H., Zhang C., Niu H., Lin Q., Ohashi N., Zhi N., Nelson W.C.,
RA Brinkac L.M., Dodson R.J., Rosovitz M.J., Sundaram J.P., Daugherty S.C.,
RA Davidsen T., Durkin A.S., Gwinn M.L., Haft D.H., Selengut J.D.,
RA Sullivan S.A., Zafar N., Zhou L., Benahmed F., Forberger H., Halpin R.,
RA Mulligan S., Robinson J., White O., Rikihisa Y., Tettelin H.;
RT "Comparative genomics of emerging human ehrlichiosis agents.";
RL PLoS Genet. 2:208-222(2006).
CC -!- FUNCTION: Catalyzes the conversion of heme O to heme A by two
CC successive hydroxylations of the methyl group at C8. The first
CC hydroxylation forms heme I, the second hydroxylation results in an
CC unstable dihydroxymethyl group, which spontaneously dehydrates,
CC resulting in the formyl group of heme A. {ECO:0000255|HAMAP-
CC Rule:MF_01665}.
CC -!- CATALYTIC ACTIVITY:
CC Reaction=2 A + Fe(II)-heme o + H2O = 2 AH2 + Fe(II)-heme a;
CC Xref=Rhea:RHEA:63388, ChEBI:CHEBI:13193, ChEBI:CHEBI:15377,
CC ChEBI:CHEBI:17499, ChEBI:CHEBI:60530, ChEBI:CHEBI:61715;
CC EC=1.17.99.9; Evidence={ECO:0000255|HAMAP-Rule:MF_01665};
CC PhysiologicalDirection=left-to-right; Xref=Rhea:RHEA:63389;
CC Evidence={ECO:0000255|HAMAP-Rule:MF_01665};
CC -!- COFACTOR:
CC Name=heme b; Xref=ChEBI:CHEBI:60344;
CC Evidence={ECO:0000255|HAMAP-Rule:MF_01665};
CC -!- PATHWAY: Porphyrin-containing compound metabolism; heme A biosynthesis;
CC heme A from heme O: step 1/1. {ECO:0000255|HAMAP-Rule:MF_01665}.
CC -!- SUBUNIT: Interacts with CtaB. {ECO:0000255|HAMAP-Rule:MF_01665}.
CC -!- SUBCELLULAR LOCATION: Cell membrane {ECO:0000255|HAMAP-Rule:MF_01665};
CC Multi-pass membrane protein {ECO:0000255|HAMAP-Rule:MF_01665}.
CC -!- SIMILARITY: Belongs to the COX15/CtaA family. Type 2 subfamily.
CC {ECO:0000255|HAMAP-Rule:MF_01665}.
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DR EMBL; CP000235; ABD43505.1; -; Genomic_DNA.
DR RefSeq; WP_011450276.1; NC_007797.1.
DR AlphaFoldDB; Q2GLK1; -.
DR SMR; Q2GLK1; -.
DR STRING; 212042.APH_0123; -.
DR EnsemblBacteria; ABD43505; ABD43505; APH_0123.
DR GeneID; 56368305; -.
DR KEGG; aph:APH_0123; -.
DR eggNOG; COG1612; Bacteria.
DR HOGENOM; CLU_017627_0_0_5; -.
DR OMA; YVHELNA; -.
DR OrthoDB; 1135592at2; -.
DR UniPathway; UPA00269; UER00713.
DR Proteomes; UP000001943; 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:0046872; F:metal ion binding; IEA:UniProtKB-KW.
DR GO; GO:0016653; F:oxidoreductase activity, acting on NAD(P)H, heme protein as acceptor; IEA:InterPro.
DR GO; GO:0006784; P:heme A biosynthetic process; IEA:UniProtKB-UniRule.
DR HAMAP; MF_01665; HemeA_synth_type2; 1.
DR InterPro; IPR003780; COX15/CtaA_fam.
DR InterPro; IPR023754; HemeA_Synthase_type2.
DR PANTHER; PTHR23289; PTHR23289; 1.
DR Pfam; PF02628; COX15-CtaA; 1.
PE 3: Inferred from homology;
KW Cell membrane; Heme biosynthesis; Iron; Membrane; Metal-binding;
KW Oxidoreductase; Reference proteome; Transmembrane; Transmembrane helix.
FT CHAIN 1..328
FT /note="Heme A synthase"
FT /id="PRO_0000349010"
FT TRANSMEM 6..26
FT /note="Helical"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01665"
FT TRANSMEM 88..108
FT /note="Helical"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01665"
FT TRANSMEM 121..141
FT /note="Helical"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01665"
FT TRANSMEM 154..174
FT /note="Helical"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01665"
FT TRANSMEM 190..210
FT /note="Helical"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01665"
FT TRANSMEM 252..272
FT /note="Helical"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01665"
FT TRANSMEM 279..299
FT /note="Helical"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01665"
FT TRANSMEM 301..321
FT /note="Helical"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01665"
FT BINDING 254
FT /ligand="heme"
FT /ligand_id="ChEBI:CHEBI:30413"
FT /ligand_part="Fe"
FT /ligand_part_id="ChEBI:CHEBI:18248"
FT /note="axial binding residue"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01665"
FT BINDING 307
FT /ligand="heme"
FT /ligand_id="ChEBI:CHEBI:30413"
FT /ligand_part="Fe"
FT /ligand_part_id="ChEBI:CHEBI:18248"
FT /note="axial binding residue"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01665"
SQ SEQUENCE 328 AA; 36594 MW; 102C1CC365022E75 CRC64;
MRTSHIATWL GTCCIMVLLM VFVGGVTRLT NSGLSITEWR PVTGVLPPIS DADWAKEHEK
YAKTPEYLYI NSGISLSDFK RIYMTEYVHR LLGRILGIIF FVPMLYFAVK RQIKGALAAR
LGIVALLGAL QGAMGWFMVK SGLVDVPYVS HFRLAAHLFL TILLFSLLWH SFLESRGVVA
VHKVTHGKYI FAIFMLVITV LQMVLGALVA GLDAGLIFNT FPLMDGDIIP SQILSGELLT
GKFLYNAVVV QFLHRFFATV VLVGAVAIPL LMRFKESWML CFGIVLQFLF GVATLVHGVP
LYLASLHQIW SFVVVALEVY ILKVIRKV
