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METK_SALSV
ID   METK_SALSV              Reviewed;         384 AA.
AC   B4TV58;
DT   24-MAR-2009, integrated into UniProtKB/Swiss-Prot.
DT   23-SEP-2008, sequence version 1.
DT   03-AUG-2022, entry version 65.
DE   RecName: Full=S-adenosylmethionine synthase {ECO:0000255|HAMAP-Rule:MF_00086};
DE            Short=AdoMet synthase {ECO:0000255|HAMAP-Rule:MF_00086};
DE            EC=2.5.1.6 {ECO:0000255|HAMAP-Rule:MF_00086};
DE   AltName: Full=MAT {ECO:0000255|HAMAP-Rule:MF_00086};
DE   AltName: Full=Methionine adenosyltransferase {ECO:0000255|HAMAP-Rule:MF_00086};
GN   Name=metK {ECO:0000255|HAMAP-Rule:MF_00086}; OrderedLocusNames=SeSA_A3263;
OS   Salmonella schwarzengrund (strain CVM19633).
OC   Bacteria; Proteobacteria; Gammaproteobacteria; Enterobacterales;
OC   Enterobacteriaceae; Salmonella.
OX   NCBI_TaxID=439843;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=CVM19633;
RX   PubMed=21602358; DOI=10.1128/jb.00297-11;
RA   Fricke W.F., Mammel M.K., McDermott P.F., Tartera C., White D.G.,
RA   Leclerc J.E., Ravel J., Cebula T.A.;
RT   "Comparative genomics of 28 Salmonella enterica isolates: evidence for
RT   CRISPR-mediated adaptive sublineage evolution.";
RL   J. Bacteriol. 193:3556-3568(2011).
CC   -!- FUNCTION: Catalyzes the formation of S-adenosylmethionine (AdoMet) from
CC       methionine and ATP. The overall synthetic reaction is composed of two
CC       sequential steps, AdoMet formation and the subsequent tripolyphosphate
CC       hydrolysis which occurs prior to release of AdoMet from the enzyme.
CC       {ECO:0000255|HAMAP-Rule:MF_00086}.
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=ATP + H2O + L-methionine = diphosphate + phosphate + S-
CC         adenosyl-L-methionine; Xref=Rhea:RHEA:21080, ChEBI:CHEBI:15377,
CC         ChEBI:CHEBI:30616, ChEBI:CHEBI:33019, ChEBI:CHEBI:43474,
CC         ChEBI:CHEBI:57844, ChEBI:CHEBI:59789; EC=2.5.1.6;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_00086};
CC   -!- COFACTOR:
CC       Name=Mg(2+); Xref=ChEBI:CHEBI:18420;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_00086};
CC       Note=Binds 2 divalent ions per subunit. {ECO:0000255|HAMAP-
CC       Rule:MF_00086};
CC   -!- COFACTOR:
CC       Name=K(+); Xref=ChEBI:CHEBI:29103;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_00086};
CC       Note=Binds 1 potassium ion per subunit. {ECO:0000255|HAMAP-
CC       Rule:MF_00086};
CC   -!- PATHWAY: Amino-acid biosynthesis; S-adenosyl-L-methionine biosynthesis;
CC       S-adenosyl-L-methionine from L-methionine: step 1/1.
CC       {ECO:0000255|HAMAP-Rule:MF_00086}.
CC   -!- SUBUNIT: Homotetramer; dimer of dimers. {ECO:0000255|HAMAP-
CC       Rule:MF_00086}.
CC   -!- SUBCELLULAR LOCATION: Cytoplasm {ECO:0000255|HAMAP-Rule:MF_00086}.
CC   -!- SIMILARITY: Belongs to the AdoMet synthase family. {ECO:0000255|HAMAP-
CC       Rule:MF_00086}.
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DR   EMBL; CP001127; ACF88644.1; -; Genomic_DNA.
DR   RefSeq; WP_001062140.1; NC_011094.1.
DR   AlphaFoldDB; B4TV58; -.
DR   SMR; B4TV58; -.
DR   EnsemblBacteria; ACF88644; ACF88644; SeSA_A3263.
DR   KEGG; sew:SeSA_A3263; -.
DR   HOGENOM; CLU_041802_1_1_6; -.
DR   OMA; MPYLRPD; -.
DR   UniPathway; UPA00315; UER00080.
DR   Proteomes; UP000001865; Chromosome.
DR   GO; GO:0005737; C:cytoplasm; IEA:UniProtKB-SubCell.
DR   GO; GO:0005524; F:ATP binding; IEA:UniProtKB-UniRule.
DR   GO; GO:0000287; F:magnesium ion binding; IEA:UniProtKB-UniRule.
DR   GO; GO:0004478; F:methionine adenosyltransferase activity; IEA:UniProtKB-UniRule.
DR   GO; GO:0006730; P:one-carbon metabolic process; IEA:UniProtKB-UniRule.
DR   GO; GO:0006556; P:S-adenosylmethionine biosynthetic process; IEA:UniProtKB-UniPathway.
DR   HAMAP; MF_00086; S_AdoMet_synth1; 1.
DR   InterPro; IPR022631; ADOMET_SYNTHASE_CS.
DR   InterPro; IPR022630; S-AdoMet_synt_C.
DR   InterPro; IPR022629; S-AdoMet_synt_central.
DR   InterPro; IPR022628; S-AdoMet_synt_N.
DR   InterPro; IPR002133; S-AdoMet_synthetase.
DR   InterPro; IPR022636; S-AdoMet_synthetase_sfam.
DR   PANTHER; PTHR11964; PTHR11964; 1.
DR   Pfam; PF02773; S-AdoMet_synt_C; 1.
DR   Pfam; PF02772; S-AdoMet_synt_M; 1.
DR   Pfam; PF00438; S-AdoMet_synt_N; 1.
DR   PIRSF; PIRSF000497; MAT; 1.
DR   SUPFAM; SSF55973; SSF55973; 3.
DR   TIGRFAMs; TIGR01034; metK; 1.
DR   PROSITE; PS00376; ADOMET_SYNTHASE_1; 1.
DR   PROSITE; PS00377; ADOMET_SYNTHASE_2; 1.
PE   3: Inferred from homology;
KW   ATP-binding; Cytoplasm; Magnesium; Metal-binding; Nucleotide-binding;
KW   One-carbon metabolism; Potassium; Transferase.
FT   CHAIN           1..384
FT                   /note="S-adenosylmethionine synthase"
FT                   /id="PRO_1000093084"
FT   REGION          99..109
FT                   /note="Flexible loop"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00086"
FT   BINDING         15
FT                   /ligand="ATP"
FT                   /ligand_id="ChEBI:CHEBI:30616"
FT                   /ligand_note="ligand shared between two neighboring
FT                   subunits"
FT                   /note="in other chain"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00086"
FT   BINDING         17
FT                   /ligand="Mg(2+)"
FT                   /ligand_id="ChEBI:CHEBI:18420"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00086"
FT   BINDING         43
FT                   /ligand="K(+)"
FT                   /ligand_id="ChEBI:CHEBI:29103"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00086"
FT   BINDING         56
FT                   /ligand="L-methionine"
FT                   /ligand_id="ChEBI:CHEBI:57844"
FT                   /ligand_note="ligand shared between two neighboring
FT                   subunits"
FT                   /note="in other chain"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00086"
FT   BINDING         99
FT                   /ligand="L-methionine"
FT                   /ligand_id="ChEBI:CHEBI:57844"
FT                   /ligand_note="ligand shared between two neighboring
FT                   subunits"
FT                   /note="in other chain"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00086"
FT   BINDING         164..166
FT                   /ligand="ATP"
FT                   /ligand_id="ChEBI:CHEBI:30616"
FT                   /ligand_note="ligand shared between two neighboring
FT                   subunits"
FT                   /note="in other chain"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00086"
FT   BINDING         230..231
FT                   /ligand="ATP"
FT                   /ligand_id="ChEBI:CHEBI:30616"
FT                   /ligand_note="ligand shared between two neighboring
FT                   subunits"
FT                   /note="in other chain"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00086"
FT   BINDING         239
FT                   /ligand="ATP"
FT                   /ligand_id="ChEBI:CHEBI:30616"
FT                   /ligand_note="ligand shared between two neighboring
FT                   subunits"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00086"
FT   BINDING         239
FT                   /ligand="L-methionine"
FT                   /ligand_id="ChEBI:CHEBI:57844"
FT                   /ligand_note="ligand shared between two neighboring
FT                   subunits"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00086"
FT   BINDING         245..246
FT                   /ligand="ATP"
FT                   /ligand_id="ChEBI:CHEBI:30616"
FT                   /ligand_note="ligand shared between two neighboring
FT                   subunits"
FT                   /note="in other chain"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00086"
FT   BINDING         262
FT                   /ligand="ATP"
FT                   /ligand_id="ChEBI:CHEBI:30616"
FT                   /ligand_note="ligand shared between two neighboring
FT                   subunits"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00086"
FT   BINDING         266
FT                   /ligand="ATP"
FT                   /ligand_id="ChEBI:CHEBI:30616"
FT                   /ligand_note="ligand shared between two neighboring
FT                   subunits"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00086"
FT   BINDING         270
FT                   /ligand="L-methionine"
FT                   /ligand_id="ChEBI:CHEBI:57844"
FT                   /ligand_note="ligand shared between two neighboring
FT                   subunits"
FT                   /note="in other chain"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00086"
SQ   SEQUENCE   384 AA;  41953 MW;  C1E559234666B39C CRC64;
     MAKHLFTSES VSEGHPDKIA DQISDAVLDA ILQQDPKARV ACETYVKTGM VLVGGEITTS
     AWVDIEEITR NTVREIGYVH SDMGFDANSC AVLSAIGKQS PDINQGVDRA DPLEQGAGDQ
     GLMFGYATNE TDVLMPAPIT YAHRLVQRQA EVRKNGTLPW LRPDAKSQVT FQYDDGKIVG
     IDAVVLSTQH AEDIDQKSLQ EAVMEEIIKP ILPSEWLNTS TKFFINPTGR FVIGGPMGDC
     GLTGRKIIVD TYGGMARHGG GAFSGKDPSK VDRSAAYAAR YVAKNIVAAG LADRCEIQVS
     YAIGVAEPTS IMVETFGTEK VPAEQLILLV REFFDLRPYG LIQMLDLLHP IYKETAAYGH
     FGRENFPWEK TDKAQLLRDA AGLK
 
 
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