the coupling of the thermostable acid protease ( ec 3.4.23.- ) of penicillium duponti k 1014 to ethylene-maleic acid ( 1 : 1 ) linear copolymer in the presence of 1-cyclohexyl-3- ( 2-morpholinoethyl ) -carbodiimide at ph 3.0 , afforded a soluble enzyme derivative with a protein incorporation yield of 67 % under optimal conditions .
C0030946
protease
C0014442
enzyme