CarA

• Description: carbamoyl-phosphate transferase-arginine (subunit A)
  
  

Gene name	carA
Synonyms	cpa
Essential	no
Product	carbamoyl-phosphate transferase-arginine (subunit A)
Function	biosynthesis of arginine
Interactions involving this protein in SubtInteract: CarA
Metabolic function and regulation of this protein in SubtiPathways: Pyrimidines, Ammonium/ glutamate
MW, pI	38 kDa, 6.212
Gene length, protein length	1059 bp, 353 aa
Immediate neighbours	argD, carB
Get the DNA and protein sequences (Barbe et al., 2009)
Genetic context This image was kindly provided by SubtiList

Categories containing this gene/protein

biosynthesis/ acquisition of amino acids

This gene is a member of the following regulons

AhrC regulon

The gene

Basic information

• Locus tag: BSU11230

Expression

Database entries

• DBTBS entry: [1]

• SubtiList entry: [2]

Additional information

• A mutation was found in this gene after evolution under relaxed selection for sporulation PubMed

The protein

Basic information/ Evolution

• Catalyzed reaction/ biological activity: 2 ATP + L-glutamine + HCO₃^- + H₂O = 2 ADP + phosphate + L-glutamate + carbamoyl phosphate (according to Swiss-Prot)

• Protein family: glutamine amidotransferase type-1 domain (according to Swiss-Prot)

• Paralogous protein(s): PyrAA

Extended information on the protein

• Kinetic information:

• Domains:

• Modification:

• Cofactor(s):

• Effectors of protein activity:

• Interactions: CarA-CarB

• Localization:

Database entries

• Structure: 1JDB (from Escherichia coli, 47% identity, 64% similarity) PubMed

• UniProt: P36838

• KEGG entry: [3]

• E.C. number: 6.3.5.5

Expression and regulation

• Operon: argC-argJ-argB-argD-carA-carB-argF PubMed

• Sigma factor: SigA PubMed

• Regulation:
  • repressed by casamino acids PubMed
  • repressed by arginine (AhrC) PubMed

• Regulatory mechanism:
  • AhrC: transcription repression PubMed

• Additional information:

Biological materials

• Mutant:

• Expression vector:

• lacZ fusion:

• GFP fusion:

• two-hybrid system:

• Antibody: