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MTAD_THEON
ID   MTAD_THEON              Reviewed;         424 AA.
AC   B6YUF8;
DT   14-APR-2009, integrated into UniProtKB/Swiss-Prot.
DT   20-JAN-2009, sequence version 1.
DT   03-AUG-2022, entry version 85.
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=TON_1653;
OS   Thermococcus onnurineus (strain NA1).
OC   Archaea; Euryarchaeota; Thermococci; Thermococcales; Thermococcaceae;
OC   Thermococcus.
OX   NCBI_TaxID=523850;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=NA1;
RX   PubMed=18790866; DOI=10.1128/jb.00746-08;
RA   Lee H.S., Kang S.G., Bae S.S., Lim J.K., Cho Y., Kim Y.J., Jeon J.H.,
RA   Cha S.-S., Kwon K.K., Kim H.-T., Park C.-J., Lee H.-W., Kim S.I., Chun J.,
RA   Colwell R.R., Kim S.-J., Lee J.-H.;
RT   "The complete genome sequence of Thermococcus onnurineus NA1 reveals a
RT   mixed heterotrophic and carboxydotrophic metabolism.";
RL   J. Bacteriol. 190:7491-7499(2008).
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; CP000855; ACJ17143.1; -; Genomic_DNA.
DR   RefSeq; WP_012572615.1; NC_011529.1.
DR   AlphaFoldDB; B6YUF8; -.
DR   SMR; B6YUF8; -.
DR   STRING; 523850.TON_1653; -.
DR   EnsemblBacteria; ACJ17143; ACJ17143; TON_1653.
DR   GeneID; 7017322; -.
DR   KEGG; ton:TON_1653; -.
DR   PATRIC; fig|523850.10.peg.1666; -.
DR   eggNOG; arCOG00695; Archaea.
DR   HOGENOM; CLU_012358_2_1_2; -.
DR   OMA; ALIGKVC; -.
DR   OrthoDB; 40873at2157; -.
DR   Proteomes; UP000002727; 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..424
FT                   /note="5-methylthioadenosine/S-adenosylhomocysteine
FT                   deaminase"
FT                   /id="PRO_1000140353"
FT   BINDING         60
FT                   /ligand="Zn(2+)"
FT                   /ligand_id="ChEBI:CHEBI:29105"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01281"
FT   BINDING         62
FT                   /ligand="Zn(2+)"
FT                   /ligand_id="ChEBI:CHEBI:29105"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01281"
FT   BINDING         89
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01281"
FT   BINDING         181
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01281"
FT   BINDING         208
FT                   /ligand="Zn(2+)"
FT                   /ligand_id="ChEBI:CHEBI:29105"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01281"
FT   BINDING         211
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01281"
FT   BINDING         296
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01281"
FT   BINDING         296
FT                   /ligand="Zn(2+)"
FT                   /ligand_id="ChEBI:CHEBI:29105"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01281"
SQ   SEQUENCE   424 AA;  46658 MW;  5A3E71C3A2703096 CRC64;
     MSILIKNGYV VYGENLEVIK ADVLIESNKI VEVAKNINKS ADTVIDAKGK VVSPGFVNLH
     THSPMGLFRG LADDLPLMDW LQDHIWPKEA KLTREYTKVG AYLGALEMIK SGTTTFLDMY
     FFMDAVAEVT LESGLRGYLS YGMIDLGDPE KTEKEVNEAL RIMKFIEGLD SDRVHFVFGP
     HAPYTCSIAL LKEVRRLANE HGKLITIHVS ETMAEIGQIS ERYGKSPVVL LDDIGFFGRD
     VIIAHGVWLD SRDIQILARH GVTVAHNPAS NMKLASGVMP LQRLLNAGVN VGLGTDGSAS
     NNNLDMLDEM KLAALLHKVH NLDPTVADAE TVFRMATVNG ARALGLKAGI IKEGYLADIA
     IIDFNKPHLR PINNVISHLV YSANGNDVET TIVDGKVLML DRELFTLDEE KILNDAERVI
     GELT
 
 
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