MtlR

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  • Description: transcriptional activator of the mtlA-mtlF-mtlD operon

Gene name mtlR
Synonyms ydaA
Essential no
Product transcriptional activator, PRD-type
Function regulation of mannitol utilization
Metabolic function and regulation of this protein in SubtiPathways:
Sugar catabolism
MW, pI 78 kDa, 5.313
Gene length, protein length 2082 bp, 694 aa
Immediate neighbours ycsN, ydaB
Get the DNA and protein sequences
(Barbe et al., 2009)
Genetic context
MtlR context.gif
This image was kindly provided by SubtiList







The gene

Basic information

  • Locus tag: BSU04160

Phenotypes of a mutant

Database entries

  • DBTBS entry: [1]
  • SubtiList entry: [2]

Additional information

Categories containing this gene/protein

utilization of specific carbon sources, transcription factors and their control, phosphoproteins

The protein

Basic information/ Evolution

  • Catalyzed reaction/ biological activity:
  • Protein family:
  • Paralogous protein(s):

Extended information on the protein

  • Kinetic information:
  • Domains: N-terminal DNA-binding domains, two PTS-regulation domains (PRD1 and PRD2), EIIB (Gat)-like domain, EIIA (Mtl)-like domain
  • Modification:
  • Cofactor(s):
  • Effectors of protein activity:
    • activity is stimulated by PtsH-dependent phosphorylation in PRD2 (mechnism of carbon catabolite repression) PubMed
    • activity is inhibited by MtlF-dependent phosphorylation in the EIIB(Gat)-like domain on Cys-419 (this prevents activity in the absence of mannitol and allows induction in presence of mannitol) PubMed
  • Localization:

Database entries

  • Structure:
  • KEGG entry: [3]
  • E.C. number:

Additional information

Expression and regulation

  • Regulation:
  • Regulatory mechanism:
  • Additional information:

Biological materials

  • Mutant:
  • Expression vector:
  • lacZ fusion:
  • GFP fusion:
  • two-hybrid system:
  • Antibody:

Labs working on this gene/protein

Your additional remarks

References

Philippe Joyet, Meriem Derkaoui, Sandrine Poncet, Josef Deutscher
Control of Bacillus subtilis mtl operon expression by complex phosphorylation-dependent regulation of the transcriptional activator MtlR.
Mol Microbiol: 2010, 76(5);1279-94
[PubMed:20444094] [WorldCat.org] [DOI] (I p)

Shouji Watanabe, Miyuki Hamano, Hiroshi Kakeshita, Keigo Bunai, Shigeo Tojo, Hirotake Yamaguchi, Yasutaro Fujita, Sui-Lam Wong, Kunio Yamane
Mannitol-1-phosphate dehydrogenase (MtlD) is required for mannitol and glucitol assimilation in Bacillus subtilis: possible cooperation of mtl and gut operons.
J Bacteriol: 2003, 185(16);4816-24
[PubMed:12897001] [WorldCat.org] [DOI] (P p)

S A Henstra, R H Duurkens, G T Robillard
Multiple phosphorylation events regulate the activity of the mannitol transcriptional regulator MtlR of the Bacillus stearothermophilus phosphoenolpyruvate-dependent mannitol phosphotransferase system.
J Biol Chem: 2000, 275(10);7037-44
[PubMed:10702268] [WorldCat.org] [DOI] (P p)

Jonathan Reizer, Steffi Bachem, Aiala Reizer, Maryvonne Arnaud, Milton H Saier, Jörg Stülke
Novel phosphotransferase system genes revealed by genome analysis - the complete complement of PTS proteins encoded within the genome of Bacillus subtilis.
Microbiology (Reading): 1999, 145 ( Pt 12);3419-3429
[PubMed:10627040] [WorldCat.org] [DOI] (P p)

S A Henstra, M Tuinhof, R H Duurkens, G T Robillard
The Bacillus stearothermophilus mannitol regulator, MtlR, of the phosphotransferase system. A DNA-binding protein, regulated by HPr and iicbmtl-dependent phosphorylation.
J Biol Chem: 1999, 274(8);4754-63
[PubMed:9988713] [WorldCat.org] [DOI] (P p)