MtlA

• Description: trigger enzyme: mannitol-specific phosphotransferase system, EIICB of the PTS
  
  

Gene name	mtlA
Synonyms
Essential	no
Product	trigger enzyme: mannitol-specific phosphotransferase system, EIICB
Function	mannitol uptake and phosphorylation, control of MtlR activity
Gene expression levels in SubtiExpress: mtlA
Interactions involving this protein in SubtInteract: MtlA
Metabolic function and regulation of this protein in SubtiPathways: Sugar catabolism
MW, pI	50 kDa, 8.814
Gene length, protein length	1434 bp, 478 aa
Immediate neighbours	ycnL, mtlF
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

phosphotransferase systems, utilization of specific carbon sources, transcription factors and their control, trigger enzyme, membrane proteins, phosphoproteins

This gene is a member of the following regulons

MtlR regulon

The gene

Basic information

• Locus tag: BSU03981

Database entries

• DBTBS entry: [1]

• SubtiList entry: [2]

The protein

Basic information/ Evolution

• Catalyzed reaction/ biological activity: Protein EIIA N(pi)-phospho-L-histidine + protein EIIB = protein EIIA + protein EIIB N(pi)-phospho-L-histidine/cysteine (according to Swiss-Prot)

• Protein family: PTS permease, fructose/ mannitol permease (Fru) family PubMed

• Paralogous protein(s):

Extended information on the protein

• Kinetic information:

• Domains:

• Modification: phosphorylation on Ser-559 PubMed

• Cofactor(s):

• Effectors of protein activity:

• Interactions:
  • MtlA-MtlR PubMed (the non-phosphorylated IIB domain of MtlA interacts with the two C-terminal EIIB (Gat)-like and EIIA (Mtl)-like domains of MtlR) PubMed

• Localization:
  • cell membrane (according to Swiss-Prot)

Database entries

• Structure: 1A3A (from Escherichia coli k12 mutant, 42% identity, 66% similarity) PubMed

• UniProt: P42956

• KEGG entry: [3]

• E.C. number: 2.7.1.69

Expression and regulation

• Operon: mtlA-mtlF-mtlD PubMed

• Expression browser: mtlA PubMed

• Sigma factor: SigA PubMed

• Regulation:
  • induced by mannitol (MtlR) PubMed
  • repressed by glucose (MtlR) PubMed

• Regulatory mechanism:
  • MtlR: transcription activation PubMed

• Additional information:

Biological materials

• Mutant:

• Expression vector:

• lacZ fusion:

• GFP fusion:

• two-hybrid system:

• Antibody:

References

Original publications

Additional publications: PubMed