ID   MTAD_BACC4              Reviewed;         435 AA.
AC   B7HIQ2;
DT   14-APR-2009, integrated into UniProtKB/Swiss-Prot.
DT   10-FEB-2009, sequence version 1.
DT   03-AUG-2022, entry version 67.
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=BCB4264_A1866;
OS   Bacillus cereus (strain B4264).
OC   Bacteria; Firmicutes; Bacilli; Bacillales; Bacillaceae; Bacillus;
OC   Bacillus cereus group.
OX   NCBI_TaxID=405532;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=B4264;
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 B4264.";
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; CP001176; ACK60992.1; -; Genomic_DNA.
DR   AlphaFoldDB; B7HIQ2; -.
DR   SMR; B7HIQ2; -.
DR   EnsemblBacteria; ACK60992; ACK60992; BCB4264_A1866.
DR   KEGG; bcb:BCB4264_A1866; -.
DR   HOGENOM; CLU_012358_2_1_9; -.
DR   OMA; ALIGKVC; -.
DR   Proteomes; UP000007096; 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_1000140347"
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;  48096 MW;  1AAF873B4CA70678 CRC64;
     MKTTYVNATI VTMNEQNEVI ENGYIIVEND QIIDVKSGKF ANDFEVDEVI DMKGKWVLPG
     LVNTHTHVVM SLLRGIGDDM LLQPWLETRI WPLESQFTPQ IAVASTELGL LEMVKSGTTS
     FSDMFNPIGV DQDAIMETVS RSGMRAAVSR TLFSFGTKDD EKKAIEEAEK YVKRYYNESG
     MLTTMVAPHS PYTCSTELLE ECARIAVENQ TMVHIHLSET EREVRDIEAQ YGKRPVEYAA
     SCGLFKRPTV IAHGVVLNDD ERAFLAENDV RVAHNPNSNL KLGSGIANVK AMLEAGIKVG
     IATDSVASNN NLDMFEEMRI ATLLQKGIHQ DATALPVETA LTLATKGAAE VIGMKQTGSL
     EIGKCADFIT IDPSNKPHLQ PADEVLSHLV YAASGKDISD VIINGKHVVW NGECKTLDEE
     RIIFEASRYK RGLQR