MelA

• Description: alpha-galactosidase
  
  

Gene name	melA
Synonyms
Essential	no
Product	alpha-galactosidase
Function	melibiose utilization
Gene expression levels in SubtiExpress: melA
Metabolic function and regulation of this protein in SubtiPathways: Sugar catabolism
MW, pI	49 kDa, 5.84
Gene length, protein length	1296 bp, 432 aa
Immediate neighbours	amyC, ytwF
Get the DNA and protein sequences (Barbe et al., 2009)
Genetic context This image was kindly provided by SubtiList
Expression at a glance   PubMed

Categories containing this gene/protein

utilization of specific carbon sources

This gene is a member of the following regulons

CcpA regulon

The gene

Basic information

• Locus tag: BSU30300

Database entries

• DBTBS entry: [1]

• SubtiList entry: [2]

The protein

Basic information/ Evolution

• Catalyzed reaction/ biological activity: Hydrolysis of terminal, non-reducing alpha-D-galactose residues in alpha-D-galactosides, including galactose oligosaccharides, galactomannans and galactohydrolase (according to Swiss-Prot)

• Protein family: glycosyl hydrolase 4 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:

Database entries

• Structure:

• UniProt: O34645

• KEGG entry: [3]

• E.C. number: 3.2.1.22

Expression and regulation

• Operon:
  • msmR-msmE-amyD-amyC-melA PubMed
  • msmE-amyD-amyC-melA PubMed
  • melA PubMed

• Expression browser: melA PubMed

• Sigma factor:
  • msmR: SigA PubMed

• Regulation:
  • MsmR
  • repressed by glucose (CcpA) PubMed

• Regulatory mechanism:
  • CcpA: transcription repression PubMed

• Additional information:

Biological materials

• Mutant:

• Expression vector:

• lacZ fusion:

• GFP fusion:

• two-hybrid system:

• Antibody: