METK_COXBU
ID METK_COXBU Reviewed; 393 AA.
AC Q83A78;
DT 25-JUL-2003, integrated into UniProtKB/Swiss-Prot.
DT 01-JUN-2003, sequence version 1.
DT 03-AUG-2022, entry version 108.
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=CBU_2030;
OS Coxiella burnetii (strain RSA 493 / Nine Mile phase I).
OC Bacteria; Proteobacteria; Gammaproteobacteria; Legionellales; Coxiellaceae;
OC Coxiella.
OX NCBI_TaxID=227377;
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=RSA 493 / Nine Mile phase I;
RX PubMed=12704232; DOI=10.1073/pnas.0931379100;
RA Seshadri R., Paulsen I.T., Eisen J.A., Read T.D., Nelson K.E., Nelson W.C.,
RA Ward N.L., Tettelin H., Davidsen T.M., Beanan M.J., DeBoy R.T.,
RA Daugherty S.C., Brinkac L.M., Madupu R., Dodson R.J., Khouri H.M.,
RA Lee K.H., Carty H.A., Scanlan D., Heinzen R.A., Thompson H.A., Samuel J.E.,
RA Fraser C.M., Heidelberg J.F.;
RT "Complete genome sequence of the Q-fever pathogen, Coxiella burnetii.";
RL Proc. Natl. Acad. Sci. U.S.A. 100:5455-5460(2003).
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; AE016828; AAO91517.1; -; Genomic_DNA.
DR RefSeq; NP_821003.1; NC_002971.3.
DR RefSeq; WP_010958613.1; NC_002971.4.
DR AlphaFoldDB; Q83A78; -.
DR SMR; Q83A78; -.
DR STRING; 227377.CBU_2030; -.
DR DNASU; 1209943; -.
DR EnsemblBacteria; AAO91517; AAO91517; CBU_2030.
DR GeneID; 1209943; -.
DR KEGG; cbu:CBU_2030; -.
DR PATRIC; fig|227377.7.peg.2023; -.
DR eggNOG; COG0192; Bacteria.
DR HOGENOM; CLU_041802_1_1_6; -.
DR OMA; MPYLRPD; -.
DR UniPathway; UPA00315; UER00080.
DR Proteomes; UP000002671; Chromosome.
DR GO; GO:0005829; C:cytosol; IBA:GO_Central.
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; IBA:GO_Central.
DR GO; GO:0006730; P:one-carbon metabolic process; IEA:UniProtKB-UniRule.
DR GO; GO:0006556; P:S-adenosylmethionine biosynthetic process; IBA:GO_Central.
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; Reference proteome; Transferase.
FT CHAIN 1..393
FT /note="S-adenosylmethionine synthase"
FT /id="PRO_0000174514"
FT REGION 100..110
FT /note="Flexible loop"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00086"
FT BINDING 16
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 18
FT /ligand="Mg(2+)"
FT /ligand_id="ChEBI:CHEBI:18420"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00086"
FT BINDING 44
FT /ligand="K(+)"
FT /ligand_id="ChEBI:CHEBI:29103"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00086"
FT BINDING 57
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 100
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 165..167
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 231..232
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 240
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 240
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 246..247
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 267
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 271
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 393 AA; 42777 MW; 9AFBE2DA6A03929D CRC64;
MTHTTLFTSE SVSEGHPDKV ADQISDAVLD ALIGQDPNCR VACEAVVKSG MVFVAGEITT
NAWADVEQIT RNTVLQIGYN DPHLGFDGET CAVVTAIGKQ SPDIVMGVDG REDQELGAGD
QGLMFGYASR ETNVFMPAPI TYAHRLVRQQ ALLRKNGRLP WLRPDAKSQV TLRYENGKPV
AADCIVLSTQ HSPEISQESL REAVIDEIIK PIMPPHWLDK HTRFLVNPTG RFVIGGPVGD
CGLTGRKIIV DTYGGMARHG GGCFSGKDPS KVDRSGAYAA RYVAKNIVAG GLADRCEIQV
SYAIGVAEPT SISVETFGTG KIDEVRIQQL IKEHFDLRPG KIIEELNLLR SIYKATATYG
HFGREEPEFT WERTDKAEIL REAAGLAAAN VTN
