the chemical modification of both escherichia coli and erwinia carotovora asparaginases by a dl-alanine-n-carboxyanhydride polymerization technique produced modified enzymes which had greater protease stability , retained most of their catalytic activity , and demonstrated a 7- to 10-fold prolongation in plasma clearance properties in normal mice and rats .
C0014442
enzymes
C0030946
protease