ID   MTAD_LAWIP              Reviewed;         441 AA.
AC   Q1MR44;
DT   04-DEC-2007, integrated into UniProtKB/Swiss-Prot.
DT   04-DEC-2007, sequence version 2.
DT   03-AUG-2022, entry version 77.
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}; OrderedLocusNames=LI0478;
OS   Lawsonia intracellularis (strain PHE/MN1-00).
OC   Bacteria; Proteobacteria; Deltaproteobacteria; Desulfovibrionales;
OC   Desulfovibrionaceae; Lawsonia.
OX   NCBI_TaxID=363253;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=PHE/MN1-00;
RA   Kaur K., Zhang Q., Beckler D., Munir S., Li L., Kinsley K., Herron L.,
RA   Peterson A., May B., Singh S., Gebhart C., Kapur V.;
RT   "The complete genome sequence of Lawsonia intracellularis: the causative
RT   agent of proliferative enteropathy.";
RL   Submitted (NOV-2005) 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}.
CC   -!- SEQUENCE CAUTION:
CC       Sequence=CAJ54532.1; Type=Erroneous initiation; Evidence={ECO:0000305};
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DR   EMBL; AM180252; CAJ54532.1; ALT_INIT; Genomic_DNA.
DR   RefSeq; WP_015353741.1; NC_008011.1.
DR   AlphaFoldDB; Q1MR44; -.
DR   SMR; Q1MR44; -.
DR   STRING; 363253.LI0478; -.
DR   KEGG; lip:LI0478; -.
DR   eggNOG; COG0402; Bacteria.
DR   HOGENOM; CLU_012358_2_1_7; -.
DR   OrthoDB; 1592010at2; -.
DR   Proteomes; UP000002430; 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; Reference proteome; Zinc.
FT   CHAIN           1..441
FT                   /note="5-methylthioadenosine/S-adenosylhomocysteine
FT                   deaminase"
FT                   /id="PRO_0000312456"
FT   BINDING         70
FT                   /ligand="Zn(2+)"
FT                   /ligand_id="ChEBI:CHEBI:29105"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01281"
FT   BINDING         72
FT                   /ligand="Zn(2+)"
FT                   /ligand_id="ChEBI:CHEBI:29105"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01281"
FT   BINDING         99
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01281"
FT   BINDING         191
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01281"
FT   BINDING         218
FT                   /ligand="Zn(2+)"
FT                   /ligand_id="ChEBI:CHEBI:29105"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01281"
FT   BINDING         221
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01281"
FT   BINDING         306
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01281"
FT   BINDING         306
FT                   /ligand="Zn(2+)"
FT                   /ligand_id="ChEBI:CHEBI:29105"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01281"
SQ   SEQUENCE   441 AA;  48842 MW;  490E29F1A849DF2E CRC64;
     MAQLCDTIIH AHCIVTQNKE RVILYNGSLA ITSGNIVALG PKEEICSFWD AKETLDLCNM
     LVMPGLINAH THVAMTFFRG LADDLPLMEW LKSYIFPIER HLTPETVRWS SLLGYAEMLR
     TGTTACLDMY FFEDVVFEAA IKAGIRCTGG ESIFVFPSVS CDTAKTALEH TKKMAELYSD
     NTRINVVVNP HSVYTTTPQV LSQCIEVAEE CSLPLHIHLS ETTTETQICL QKYGLRPVSY
     CRDLGILTPR TTLAHVVDVN LEELTCLAEH GCVISHNPSS NMKLASGVSP IPEMIKRNLS
     VGLGTDGAAS NNCLNMFMEM GRCALLHKVY WNNPTALFAQ TVLDMATLGG AAAIHQPKLG
     VLAPGHPADL IALDMSMPNL QPMFNPISHL IYATTGMEVF LTMVEGEILY YNGTFTRFDY
     DSLSNEMKKV SHWVKEKLQL L