ID   MTAD_BACC0              Reviewed;         435 AA.
AC   B7JJI0;
DT   14-APR-2009, integrated into UniProtKB/Swiss-Prot.
DT   10-FEB-2009, sequence version 1.
DT   03-AUG-2022, entry version 68.
DE   RecName: Full=5-methylthioadenosine/S-adenosylhomocysteine deaminase {ECO:0000255|HAMAP-Rule:MF_01281};
DE            Short=MTA/SAH deaminase {ECO:0000255|HAMAP-Rule:MF_01281};
DE            EC=3.5.4.28 {ECO:0000255|HAMAP-Rule:MF_01281};
DE            EC=3.5.4.31 {ECO:0000255|HAMAP-Rule:MF_01281};
GN   Name=mtaD {ECO:0000255|HAMAP-Rule:MF_01281};
GN   OrderedLocusNames=BCAH820_1903;
OS   Bacillus cereus (strain AH820).
OC   Bacteria; Firmicutes; Bacilli; Bacillales; Bacillaceae; Bacillus;
OC   Bacillus cereus group.
OX   NCBI_TaxID=405535;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=AH820;
RA   Dodson R.J., Durkin A.S., Rosovitz M.J., Rasko D.A., Hoffmaster A.,
RA   Ravel J., Sutton G.;
RT   "Genome sequence of Bacillus cereus AH820.";
RL   Submitted (OCT-2008) to the EMBL/GenBank/DDBJ databases.
CC   -!- FUNCTION: Catalyzes the deamination of 5-methylthioadenosine and S-
CC       adenosyl-L-homocysteine into 5-methylthioinosine and S-inosyl-L-
CC       homocysteine, respectively. Is also able to deaminate adenosine.
CC       {ECO:0000255|HAMAP-Rule:MF_01281}.
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=H(+) + H2O + S-adenosyl-L-homocysteine = NH4(+) + S-inosyl-L-
CC         homocysteine; Xref=Rhea:RHEA:20716, ChEBI:CHEBI:15377,
CC         ChEBI:CHEBI:15378, ChEBI:CHEBI:28938, ChEBI:CHEBI:57856,
CC         ChEBI:CHEBI:57985; EC=3.5.4.28; Evidence={ECO:0000255|HAMAP-
CC         Rule:MF_01281};
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=H(+) + H2O + S-methyl-5'-thioadenosine = NH4(+) + S-methyl-5'-
CC         thioinosine; Xref=Rhea:RHEA:25025, ChEBI:CHEBI:15377,
CC         ChEBI:CHEBI:15378, ChEBI:CHEBI:17509, ChEBI:CHEBI:28938,
CC         ChEBI:CHEBI:48595; EC=3.5.4.31; Evidence={ECO:0000255|HAMAP-
CC         Rule:MF_01281};
CC   -!- COFACTOR:
CC       Name=Zn(2+); Xref=ChEBI:CHEBI:29105;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_01281};
CC       Note=Binds 1 zinc ion per subunit. {ECO:0000255|HAMAP-Rule:MF_01281};
CC   -!- SIMILARITY: Belongs to the metallo-dependent hydrolases superfamily.
CC       MTA/SAH deaminase family. {ECO:0000255|HAMAP-Rule:MF_01281}.
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DR   EMBL; CP001283; ACK87794.1; -; Genomic_DNA.
DR   AlphaFoldDB; B7JJI0; -.
DR   SMR; B7JJI0; -.
DR   EnsemblBacteria; ACK87794; ACK87794; BCAH820_1903.
DR   KEGG; bcu:BCAH820_1903; -.
DR   HOGENOM; CLU_012358_2_0_9; -.
DR   OMA; ALIGKVC; -.
DR   Proteomes; UP000001363; Chromosome.
DR   GO; GO:0090614; F:5'-methylthioadenosine deaminase activity; IEA:UniProtKB-UniRule.
DR   GO; GO:0046872; F:metal ion binding; IEA:UniProtKB-KW.
DR   GO; GO:0050270; F:S-adenosylhomocysteine deaminase activity; IEA:UniProtKB-UniRule.
DR   Gene3D; 2.30.40.10; -; 1.
DR   HAMAP; MF_01281; MTA_SAH_deamin; 1.
DR   InterPro; IPR006680; Amidohydro-rel.
DR   InterPro; IPR023512; Deaminase_MtaD/DadD.
DR   InterPro; IPR011059; Metal-dep_hydrolase_composite.
DR   InterPro; IPR032466; Metal_Hydrolase.
DR   Pfam; PF01979; Amidohydro_1; 1.
DR   SUPFAM; SSF51338; SSF51338; 1.
DR   SUPFAM; SSF51556; SSF51556; 1.
PE   3: Inferred from homology;
KW   Hydrolase; Metal-binding; Zinc.
FT   CHAIN           1..435
FT                   /note="5-methylthioadenosine/S-adenosylhomocysteine
FT                   deaminase"
FT                   /id="PRO_1000140345"
FT   BINDING         65
FT                   /ligand="Zn(2+)"
FT                   /ligand_id="ChEBI:CHEBI:29105"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01281"
FT   BINDING         67
FT                   /ligand="Zn(2+)"
FT                   /ligand_id="ChEBI:CHEBI:29105"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01281"
FT   BINDING         94
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01281"
FT   BINDING         150
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01281"
FT   BINDING         189
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01281"
FT   BINDING         216
FT                   /ligand="Zn(2+)"
FT                   /ligand_id="ChEBI:CHEBI:29105"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01281"
FT   BINDING         219
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01281"
FT   BINDING         304
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01281"
FT   BINDING         304
FT                   /ligand="Zn(2+)"
FT                   /ligand_id="ChEBI:CHEBI:29105"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01281"
SQ   SEQUENCE   435 AA;  48144 MW;  2D9289BAA5819B33 CRC64;
     MKTTYVNATI VTMNEQNEVI ENGYIIVEND KIIDVNSGEF ASDFEVDEVI DMKGKWVLPG
     LVNTHTHVVM SLLRGIGDDM LLQPWLETRI WPLESQFTPE LAVASTELGL LEMVKSGTTS
     FSDMFNPIGV DQDAIMETVS RSGMRAAVSR TLFSFGTQED EKKAIEEAEK YVKRYYNESG
     MLTTMVAPHS PYTCSTELLE ECARIAVENQ TMVHIHLSET EREVRDIEAQ YGKRPVEYVA
     SCGLFKRPTV IAHGVVLNDN ERAFLAEHDV RVAHNPNSNL KLGSGIANVK AMLEAGMKVG
     IATDSVASNN NLDMFEEMRI ATLLQKGIHQ DATALPVETA LTLATKGAAE VIGMKQTGSL
     EVGKCADFIT IDPSNKPHLQ PADEVLSHLV YAASGKDISD VIINGKRVVW NGECKTLDEE
     RIIFEASRYK RGLQR