label: cyanophycin synthetase activity (L-arginine-adding)
label_lc: cyanophycin synthetase activity (l-arginine-adding)
description: "Catalysis of the reaction: ATP + [L-Asp(4-L-Arg)]n-L-Asp + L-arginine = ADP + phosphate + [L-Asp(4-L-Arg)]n+1."