MtnK

• Description: 5-methylthioribose kinase
  
  

Gene name	mtnK
Synonyms	ykrT
Essential	no
Product	5-methylthioribose kinase
Function	methionine salvage
Gene expression levels in SubtiExpress: mtnK
Metabolic function and regulation of this protein in SubtiPathways: mtnK
MW, pI	45 kDa, 4.856
Gene length, protein length	1197 bp, 399 aa
Immediate neighbours	mtnA, mtnU
Sequences	Protein DNA DNA_with_flanks
Genetic context This image was kindly provided by SubtiList
Expression at a glance   PubMed

Categories containing this gene/protein

biosynthesis/ acquisition of amino acids, membrane proteins, phosphoproteins, most abundant proteins

This gene is a member of the following regulons

S-box

The gene

Basic information

• Locus tag: BSU13560

Database entries

• BsubCyc: BSU13560

• DBTBS entry: [1]

• SubtiList entry: [2]

The protein

Basic information/ Evolution

• Catalyzed reaction/ biological activity: ATP + S-methyl-5-thio-D-ribose = ADP + S-methyl-5-thio-alpha-D-ribose 1-phosphate (according to Swiss-Prot)

• Protein family: methylthioribose kinase family (according to Swiss-Prot)

• Paralogous protein(s):

Extended information on the protein

• Kinetic information:

• Domains:

• Modification:
  • phosphorylated on Arg-80 OR Arg-82 and Arg-365 PubMed

• Cofactors:

• Effectors of protein activity:

• Interactions:

• Localization:
  • membrane associated PubMed

Database entries

• BsubCyc: BSU13560

• Structure: 2PUP

• UniProt: O31663

• KEGG entry: [3]

• E.C. number: 2.7.1.100

Additional information

• subject to Clp-dependent proteolysis upon glucose starvation PubMed

Expression and regulation

• Operon: mtnK-mtnA PubMed

• Expression browser: mtnK PubMed

• Sigma factor: SigA PubMed

• 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:
  • subject to Clp-dependent proteolysis upon glucose starvation PubMed
  • belongs to the 100 most abundant proteins PubMed
  • number of protein molecules per cell (minimal medium with glucose and ammonium): 5079 PubMed
  • number of protein molecules per cell (complex medium with amino acids, without glucose): 16333 PubMed
  • number of protein molecules per cell (minimal medium with glucose and ammonium, exponential phase): 13437 PubMed
  • number of protein molecules per cell (minimal medium with glucose and ammonium, early stationary phase after glucose exhaustion): 7764 PubMed
  • number of protein molecules per cell (minimal medium with glucose and ammonium, late stationary phase after glucose exhaustion): 10257 PubMed

Biological materials

• Mutant:

• Expression vector:

• lacZ fusion:

• GFP fusion:

• two-hybrid system:

• Antibody: