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METK_SERP5
ID   METK_SERP5              Reviewed;         384 AA.
AC   A8GIX9;
DT   05-FEB-2008, integrated into UniProtKB/Swiss-Prot.
DT   13-NOV-2007, sequence version 1.
DT   03-AUG-2022, entry version 78.
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=Spro_3974;
OS   Serratia proteamaculans (strain 568).
OC   Bacteria; Proteobacteria; Gammaproteobacteria; Enterobacterales;
OC   Yersiniaceae; Serratia.
OX   NCBI_TaxID=399741;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=568;
RG   US DOE Joint Genome Institute;
RA   Copeland A., Lucas S., Lapidus A., Barry K., Glavina del Rio T., Dalin E.,
RA   Tice H., Pitluck S., Chain P., Malfatti S., Shin M., Vergez L., Schmutz J.,
RA   Larimer F., Land M., Hauser L., Kyrpides N., Kim E., Taghavi S., Newman L.,
RA   Vangronsveld J., van der Lelie D., Richardson P.;
RT   "Complete sequence of chromosome of Serratia proteamaculans 568.";
RL   Submitted (SEP-2007) to the EMBL/GenBank/DDBJ databases.
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; CP000826; ABV43069.1; -; Genomic_DNA.
DR   RefSeq; WP_012146676.1; NC_009832.1.
DR   AlphaFoldDB; A8GIX9; -.
DR   SMR; A8GIX9; -.
DR   STRING; 399741.Spro_3974; -.
DR   EnsemblBacteria; ABV43069; ABV43069; Spro_3974.
DR   KEGG; spe:Spro_3974; -.
DR   eggNOG; COG0192; Bacteria.
DR   HOGENOM; CLU_041802_1_1_6; -.
DR   OMA; MPYLRPD; -.
DR   OrthoDB; 1024388at2; -.
DR   UniPathway; UPA00315; UER00080.
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_1000057564"
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;  41896 MW;  E43FEFE86B6C38B8 CRC64;
     MAKHLFTSES VSEGHPDKIA DQISDAVLDA ILEQDPKARV ACETYVKTGM VLVGGEITTS
     AWVDIEEITR KTVREIGYVH SDMGFDANSC AVLSAIGKQS PDINQGVDRT DPLEQGAGDQ
     GLMFGYATNE TEVLMPAPVT YAHRLVQRQA EVRKNGTLPW LRPDAKSQVT FQYDDGKIVG
     IDAVVLSTQH SEDISLKDLQ EAVMEEIIKP VLPTEWLSAG TKYHINPTGR FVIGGPMGDC
     GLTGRKIIVD TYGGMARHGG GAFSGKDPSK VDRSAAYAAR YVAKNIVAAG LADRCEIQVS
     YAIGVAEPTS IMVETFGTEK IPTEQLTLLV REFFDLRPYG LIQMMDLLQP IYRETAAYGH
     FGREHFPWEA TDKAALLRDA AGLK
 
 
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