MetK

• Description: S-adenosylmethionine synthetase
  
  

Gene name	metK
Synonyms	metE
Essential	yes PubMed
Product	S-adenosylmethionine synthetase
Function	S-adenosylmethionine synthesis
MW, pI	43 kDa, 5.025
Gene length, protein length	1200 bp, 400 aa
Immediate neighbours	asnB, pckA
Get the DNA and protein sequences (Barbe et al., 2009)
Genetic context This image was kindly provided by SubtiList

The gene

Basic information

• Locus tag: BSU30550

Phenotypes of a mutant

essential PubMed

Database entries

• DBTBS entry: [1]

• SubtiList entry: [2]

The protein

Basic information/ Evolution

• Catalyzed reaction/ biological activity: ATP + L-methionine + H₂O = phosphate + diphosphate + S-adenosyl-L-methionine (according to Swiss-Prot)

• Protein family: AdoMet synthetase family (according to Swiss-Prot)

• Paralogous protein(s):

Extended information on the protein

• Kinetic information:

• Domains:

• Modification:

• Cofactor(s):

• Effectors of protein activity:

• Interactions:

• Localization: cytoplasm (according to Swiss-Prot)

Database entries

• Structure:

• Swiss prot entry: P54419

• KEGG entry: [3]

• E.C. number: 2.5.1.6

Expression and regulation

• Operon:

• Sigma factor:

• Regulation: induced by methionine starvation (S-box) PubMed

• Regulatory mechanism: S-box: transcription termination/ antitermination, the S-box riboswitch binds S-adenosylmethionine resulting in termination PubMed

• Additional information:

Biological materials

• Mutant:

• Expression vector:

• lacZ fusion:

• GFP fusion:

• two-hybrid system:

• Antibody:

References

Brooke A McDaniel, Frank J Grundy, Vineeta P Kurlekar, Jerneja Tomsic, Tina M Henkin
Identification of a mutation in the Bacillus subtilis S-adenosylmethionine synthetase gene that results in derepression of S-box gene expression.
J Bacteriol: 2006, 188(10);3674-81
[PubMed:16672621] [WorldCat.org] [DOI] (P p)

F J Grundy, T M Henkin
The S box regulon: a new global transcription termination control system for methionine and cysteine biosynthesis genes in gram-positive bacteria.
Mol Microbiol: 1998, 30(4);737-49
[PubMed:10094622] [WorldCat.org] [DOI] (P p)