l-zpvapa.hcl was split by trypsin more readily than na-benzyloxycarbonyl-l-arginine-p-nitroanilide hydrochloride ( l-zapa , hcl ) , na-benzoyl-l-arginine-p-nitroanilide hydrochloride ( l-bapa.hcl ) , na-tosyl-l-arginine-p-nitroanilide hdyrochloride ( l-tapa.hcl ) and na-benzoyl-dl-arginine-p-nitroanilide hydrochloride ( dl-bapa.hcl ) by factors of 100 , 400 , 600 , and 1,200 , respectively .
C0301556
arginine
C0003765
arginine