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ENZYME entry: EC 6.3.2.30

Accepted Name
Cyanophycin synthase (L-arginine-adding).
Alternative Name(s)
Cyanophycin synthetase.
Multi-L-arginyl-poly-L-aspartate synthase.
Reaction catalysed
ATP + (L-Asp(4-L-Arg))(n)-L-Asp + L-Arg <=> ADP + phosphate + (L-Asp(4-L-Arg))(n+1)
Cofactor(s)
Mg(2+).
Comment(s)
  • Both this enzyme and EC 6.3.2.29 are required for the elongation of cyanophycin, which is a protein-like cell inclusion that is unique to cyanobacteria and acts as a temporary nitrogen store.
  • Both enzymes are found in the same protein but have different active sites.
  • Both L-Asp and L-Arg must be present before either enzyme will display significant activity.
  • Canavanine and lysine can be incoporated into the polymer instead of arginine.
Cross-references
PROSITEPDOC50975
BRENDA6.3.2.30
EC2PDB6.3.2.30
ExplorEnz6.3.2.30
PRIAM enzyme-specific profiles6.3.2.30
KEGG Ligand Database for Enzyme Nomenclature6.3.2.30
IUBMB Enzyme Nomenclature6.3.2.30
IntEnz6.3.2.30
MEDLINEFind literature relating to 6.3.2.30
MetaCyc6.3.2.30
Rhea expert-curated reactions6.3.2.30
UniProtKB/Swiss-Prot
Q9KGY4, CPHA_CROS5;  P56947, CPHA_GEMHP;  P58572, CPHA_NOSS1;  
P73833, CPHA_SYNY3;  O86109, CPHA_TRIV2;  

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