ProA

• Description: glutamate-5-semialdehyde dehydrogenase, required for normal and osmoadaptive proline biosynthesis
  
  

Gene name	proA
Synonyms
Essential	no
Product	glutamate-5-semialdehyde dehydrogenase
Function	biosynthesis of proline
Gene expression levels in SubtiExpress: proA
Metabolic function and regulation of this protein in SubtiPathways: proA
MW, pI	45 kDa, 5.098
Gene length, protein length	1245 bp, 415 aa
Immediate neighbours	proB, ohrA
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, coping with hyper-osmotic stress

This gene is a member of the following regulons

T-box

The gene

Basic information

• Locus tag: BSU13130

Phenotypes of a mutant

• auxotrophic for proline PubMed

Database entries

• BsubCyc: BSU13130

• DBTBS entry: no entry

• SubtiList entry: [1]

The protein

Basic information/ Evolution

• Catalyzed reaction/ biological activity: L-glutamate 5-semialdehyde + phosphate + NADP⁺ = L-glutamyl 5-phosphate + NADPH (according to Swiss-Prot)

• Protein family: gamma-glutamyl phosphate reductase 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

• BsubCyc: BSU13130

• Structure: 1O20 (from Thermotoga maritima, 46% identity, 67% similarity) PubMed

• UniProt: P39821

• KEGG entry: [2]

• E.C. number: 1.2.1.41

Expression and regulation

• Operon: proB-proA PubMed

• Expression browser: proA PubMed

• Sigma factor: SigA PubMed

• Regulation:
  • induced by proline limitation (T-box) PubMed

• Regulatory mechanism:
  • T-box: RNA switch, transcriptional antitermination PubMed

• Additional information:
  • ProA is absent from the membrane proteome of a bdbC-bdbD mutant PubMed
  • number of protein molecules per cell (minimal medium with glucose and ammonium): 651 PubMed
  • number of protein molecules per cell (complex medium with amino acids, without glucose): 508 PubMed

Biological materials

• Mutant:

• Expression vector:

• lacZ fusion:

• GFP fusion:

• two-hybrid system:

• Antibody: