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Protein

S-adenosylmethionine synthase

Gene

metK

Organism
Methylobacterium extorquens (strain PA1) (Methylorubrum extorquens)
Status
Reviewed-Annotation score: -Protein inferred from homologyi

Functioni

Catalyzes the formation of S-adenosylmethionine (AdoMet) from methionine and ATP. The overall synthetic reaction is composed of two sequential steps, AdoMet formation and the subsequent tripolyphosphate hydrolysis which occurs prior to release of AdoMet from the enzyme.UniRule annotation

Catalytic activityi

ATP + L-methionine + H2O = phosphate + diphosphate + S-adenosyl-L-methionine.UniRule annotation

Cofactori

Protein has several cofactor binding sites:

Pathwayi: S-adenosyl-L-methionine biosynthesis

This protein is involved in step 1 of the subpathway that synthesizes S-adenosyl-L-methionine from L-methionine.UniRule annotation
Proteins known to be involved in this subpathway in this organism are:
  1. S-adenosylmethionine synthase (metK)
This subpathway is part of the pathway S-adenosyl-L-methionine biosynthesis, which is itself part of Amino-acid biosynthesis.
View all proteins of this organism that are known to be involved in the subpathway that synthesizes S-adenosyl-L-methionine from L-methionine, the pathway S-adenosyl-L-methionine biosynthesis and in Amino-acid biosynthesis.

Sites

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Binding sitei17ATPUniRule annotation1
Metal bindingi19MagnesiumUniRule annotation1
Metal bindingi45PotassiumUniRule annotation1
Binding sitei58MethionineUniRule annotation1
Binding sitei102MethionineUniRule annotation1
Binding sitei244ATP; shared with neighboring subunitUniRule annotation1
Binding sitei244Methionine; shared with neighboring subunitUniRule annotation1
Binding sitei267ATP; via amide nitrogen; shared with neighboring subunitUniRule annotation1
Binding sitei271ATP; shared with neighboring subunitUniRule annotation1
Binding sitei275MethionineUniRule annotation1

Regions

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Nucleotide bindingi169 – 171ATPUniRule annotation3
Nucleotide bindingi235 – 236ATPUniRule annotation2
Nucleotide bindingi250 – 251ATPUniRule annotation2

GO - Molecular functioni

GO - Biological processi

Keywordsi

Molecular functionTransferase
Biological processOne-carbon metabolism
LigandATP-binding, Magnesium, Metal-binding, Nucleotide-binding, Potassium

Enzyme and pathway databases

UniPathwayi
UPA00315;UER00080

Names & Taxonomyi

Protein namesi
Recommended name:
S-adenosylmethionine synthaseUniRule annotation (EC:2.5.1.6UniRule annotation)
Short name:
AdoMet synthaseUniRule annotation
Alternative name(s):
MATUniRule annotation
Methionine adenosyltransferaseUniRule annotation
Gene namesi
Name:metKUniRule annotation
Ordered Locus Names:Mext_3306
OrganismiMethylobacterium extorquens (strain PA1) (Methylorubrum extorquens)
Taxonomic identifieri419610 [NCBI]
Taxonomic lineageiBacteriaProteobacteriaAlphaproteobacteriaRhizobialesMethylobacteriaceaeMethylorubrum
Proteomesi
  • UP000008546 Componenti: Chromosome

Subcellular locationi

GO - Cellular componenti

Keywords - Cellular componenti

Cytoplasm

PTM / Processingi

Molecule processing

Feature keyPosition(s)DescriptionActionsGraphical viewLength
ChainiPRO_10000930611 – 391S-adenosylmethionine synthaseAdd BLAST391

Interactioni

Subunit structurei

Homotetramer; dimer of dimers.UniRule annotation

Protein-protein interaction databases

STRINGi419610.Mext_3306

Structurei

3D structure databases

ProteinModelPortaliA9W731
SMRiA9W731
ModBaseiSearch...
MobiDBiSearch...

Family & Domainsi

Region

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Regioni102 – 112Flexible loopUniRule annotationAdd BLAST11

Sequence similaritiesi

Belongs to the AdoMet synthase family.UniRule annotation

Phylogenomic databases

eggNOGiENOG4105CPH Bacteria
COG0192 LUCA
HOGENOMiHOG000245710
KOiK00789
OMAiPGHFLFT
OrthoDBiPOG091H00IO

Family and domain databases

HAMAPiMF_00086 S_AdoMet_synth1, 1 hit
InterProiView protein in InterPro
IPR022631 ADOMET_SYNTHASE_CS
IPR022630 S-AdoMet_synt_C
IPR022629 S-AdoMet_synt_central
IPR022628 S-AdoMet_synt_N
IPR002133 S-AdoMet_synthetase
IPR022636 S-AdoMet_synthetase_sfam
PANTHERiPTHR11964 PTHR11964, 1 hit
PfamiView protein in Pfam
PF02773 S-AdoMet_synt_C, 1 hit
PF02772 S-AdoMet_synt_M, 1 hit
PF00438 S-AdoMet_synt_N, 1 hit
PIRSFiPIRSF000497 MAT, 1 hit
SUPFAMiSSF55973 SSF55973, 3 hits
TIGRFAMsiTIGR01034 metK, 1 hit
PROSITEiView protein in PROSITE
PS00376 ADOMET_SYNTHASE_1, 1 hit
PS00377 ADOMET_SYNTHASE_2, 1 hit

Sequencei

Sequence statusi: Complete.

A9W731-1 [UniParc]FASTAAdd to basket
« Hide
        10         20         30         40         50
MPRSDYLFTS ESVSEGHPDK VSDRISDTVV DAYLSAMPEA RLGVETLTTT
60 70 80 90 100
NRVVIAGEVR GPDSVTFKDL EELTREAVRD IGYEQSGFHW KNNDVAIHLH
110 120 130 140 150
AQSADIAQGV DAAGNKDEGA GDQGIMFGYA ADETPALMPA PIFYAHKILK
160 170 180 190 200
DLADARKAKQ GDAAKLGPDA KSQVTVRYAN GRPVEVTQIV LSTQHLDESL
210 220 230 240 250
DSADVRAIVE PYILKALPQG WVNEGTVWHV NPTGKFVIGG PDGDAGLTGR
260 270 280 290 300
KIIVDTYGGA APHGGGAFSG KDPTKVDRSA AYAARYLAKN VVAAGLARRA
310 320 330 340 350
TIQLSYAIGV AKPLSIYVDL HGTGTVDEAK LETVLMDALD LSPRGIRTAL
360 370 380 390
QLNKPIYART SAYGHFGREP DADGGFSWEK TDLADKLKSA F
Length:391
Mass (Da):41,820
Last modified:February 5, 2008 - v1
Checksum:iEC37C5DB03F79655
GO

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
CP000908 Genomic DNA Translation: ABY31693.1
RefSeqiWP_003599336.1, NC_010172.1

Genome annotation databases

EnsemblBacteriaiABY31693; ABY31693; Mext_3306
KEGGimex:Mext_3306

Similar proteinsi

Cross-referencesi

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
CP000908 Genomic DNA Translation: ABY31693.1
RefSeqiWP_003599336.1, NC_010172.1

3D structure databases

ProteinModelPortaliA9W731
SMRiA9W731
ModBaseiSearch...
MobiDBiSearch...

Protein-protein interaction databases

STRINGi419610.Mext_3306

Protocols and materials databases

Structural Biology KnowledgebaseSearch...

Genome annotation databases

EnsemblBacteriaiABY31693; ABY31693; Mext_3306
KEGGimex:Mext_3306

Phylogenomic databases

eggNOGiENOG4105CPH Bacteria
COG0192 LUCA
HOGENOMiHOG000245710
KOiK00789
OMAiPGHFLFT
OrthoDBiPOG091H00IO

Enzyme and pathway databases

UniPathwayi
UPA00315;UER00080

Family and domain databases

HAMAPiMF_00086 S_AdoMet_synth1, 1 hit
InterProiView protein in InterPro
IPR022631 ADOMET_SYNTHASE_CS
IPR022630 S-AdoMet_synt_C
IPR022629 S-AdoMet_synt_central
IPR022628 S-AdoMet_synt_N
IPR002133 S-AdoMet_synthetase
IPR022636 S-AdoMet_synthetase_sfam
PANTHERiPTHR11964 PTHR11964, 1 hit
PfamiView protein in Pfam
PF02773 S-AdoMet_synt_C, 1 hit
PF02772 S-AdoMet_synt_M, 1 hit
PF00438 S-AdoMet_synt_N, 1 hit
PIRSFiPIRSF000497 MAT, 1 hit
SUPFAMiSSF55973 SSF55973, 3 hits
TIGRFAMsiTIGR01034 metK, 1 hit
PROSITEiView protein in PROSITE
PS00376 ADOMET_SYNTHASE_1, 1 hit
PS00377 ADOMET_SYNTHASE_2, 1 hit
ProtoNetiSearch...

Entry informationi

Entry nameiMETK_METEP
AccessioniPrimary (citable) accession number: A9W731
Entry historyiIntegrated into UniProtKB/Swiss-Prot: March 24, 2009
Last sequence update: February 5, 2008
Last modified: October 10, 2018
This is version 68 of the entry and version 1 of the sequence. See complete history.
Entry statusiReviewed (UniProtKB/Swiss-Prot)
Annotation programProkaryotic Protein Annotation Program

Miscellaneousi

Keywords - Technical termi

Complete proteome

Documents

  1. SIMILARITY comments
    Index of protein domains and families
  2. PATHWAY comments
    Index of metabolic and biosynthesis pathways
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Main funding by: National Institutes of Health

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