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CTAA_BACVZ
ID   CTAA_BACVZ              Reviewed;         308 AA.
AC   A7Z4B0;
DT   02-SEP-2008, integrated into UniProtKB/Swiss-Prot.
DT   23-OCT-2007, sequence version 1.
DT   03-AUG-2022, entry version 88.
DE   RecName: Full=Heme A synthase {ECO:0000255|HAMAP-Rule:MF_01664};
DE            Short=HAS {ECO:0000255|HAMAP-Rule:MF_01664};
DE            EC=1.17.99.9 {ECO:0000255|HAMAP-Rule:MF_01664};
DE   AltName: Full=Cytochrome aa3-controlling protein {ECO:0000255|HAMAP-Rule:MF_01664};
GN   Name=ctaA {ECO:0000255|HAMAP-Rule:MF_01664}; OrderedLocusNames=RBAM_014730;
OS   Bacillus velezensis (strain DSM 23117 / BGSC 10A6 / LMG 26770 / FZB42)
OS   (Bacillus amyloliquefaciens subsp. plantarum).
OC   Bacteria; Firmicutes; Bacilli; Bacillales; Bacillaceae; Bacillus;
OC   Bacillus amyloliquefaciens group.
OX   NCBI_TaxID=326423;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=DSM 23117 / BGSC 10A6 / LMG 26770 / FZB42;
RX   PubMed=17704766; DOI=10.1038/nbt1325;
RA   Chen X.H., Koumoutsi A., Scholz R., Eisenreich A., Schneider K.,
RA   Heinemeyer I., Morgenstern B., Voss B., Hess W.R., Reva O., Junge H.,
RA   Voigt B., Jungblut P.R., Vater J., Suessmuth R., Liesegang H.,
RA   Strittmatter A., Gottschalk G., Borriss R.;
RT   "Comparative analysis of the complete genome sequence of the plant growth-
RT   promoting bacterium Bacillus amyloliquefaciens FZB42.";
RL   Nat. Biotechnol. 25:1007-1014(2007).
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_01664}.
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_01664};
CC       PhysiologicalDirection=left-to-right; Xref=Rhea:RHEA:63389;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_01664};
CC   -!- COFACTOR:
CC       Name=heme b; Xref=ChEBI:CHEBI:60344;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_01664};
CC   -!- PATHWAY: Porphyrin-containing compound metabolism; heme A biosynthesis;
CC       heme A from heme O: step 1/1. {ECO:0000255|HAMAP-Rule:MF_01664}.
CC   -!- SUBUNIT: Interacts with CtaB. {ECO:0000255|HAMAP-Rule:MF_01664}.
CC   -!- SUBCELLULAR LOCATION: Cell membrane {ECO:0000255|HAMAP-Rule:MF_01664};
CC       Multi-pass membrane protein {ECO:0000255|HAMAP-Rule:MF_01664}.
CC   -!- SIMILARITY: Belongs to the COX15/CtaA family. Type 1 subfamily.
CC       {ECO:0000255|HAMAP-Rule:MF_01664}.
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DR   EMBL; CP000560; ABS73836.1; -; Genomic_DNA.
DR   RefSeq; WP_007611205.1; NC_009725.2.
DR   AlphaFoldDB; A7Z4B0; -.
DR   SMR; A7Z4B0; -.
DR   STRING; 326423.RBAM_014730; -.
DR   EnsemblBacteria; ABS73836; ABS73836; RBAM_014730.
DR   KEGG; bay:RBAM_014730; -.
DR   HOGENOM; CLU_041525_3_1_9; -.
DR   OMA; YTGAYVR; -.
DR   UniPathway; UPA00269; UER00713.
DR   Proteomes; UP000001120; 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_01664; HemeA_synth_type1; 1.
DR   InterPro; IPR003780; COX15/CtaA_fam.
DR   InterPro; IPR023755; HemeA_Synthase_type1.
DR   Pfam; PF02628; COX15-CtaA; 1.
PE   3: Inferred from homology;
KW   Cell membrane; Heme biosynthesis; Iron; Membrane; Metal-binding;
KW   Oxidoreductase; Transmembrane; Transmembrane helix.
FT   CHAIN           1..308
FT                   /note="Heme A synthase"
FT                   /id="PRO_0000348965"
FT   TRANSMEM        7..27
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01664"
FT   TRANSMEM        66..86
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01664"
FT   TRANSMEM        93..113
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01664"
FT   TRANSMEM        122..142
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01664"
FT   TRANSMEM        162..182
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01664"
FT   TRANSMEM        215..235
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01664"
FT   TRANSMEM        244..264
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01664"
FT   TRANSMEM        276..296
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01664"
FT   BINDING         216
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_01664"
FT   BINDING         278
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_01664"
SQ   SEQUENCE   308 AA;  34067 MW;  4D005514E45E04F8 CRC64;
     MNKALKALGV LTTFVMLVVL IGGALVTKTG SGLGCGRQWP LCHGRFFPEL NAASIIEWSH
     RLASGVSIVL VLSLAFWAWR KVTPVFRETT FLAIMSIIFL FLQALLGALA VVFGSNALVM
     ALHFGISLIS FASVLILTLL IFEADKSDKK LVKPLRIGRK MQFHMIGLSI YTYIVVYTGA
     YVRHTKSSLA CPDVPLCSRL NHGLPSHFQE WVQMGHRTAA LLLFVWILVA FAHAVRSYKD
     QKQILGGWIA ALAFVVLQAL SGIMVVYSEM ATGFALAHSL FIAGLFGVLC YFLLLIARFR
     YESKQRNI
 
 
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