using as a starting material either a detergent extract or a protein fraction eluted from membranes with ethylene glycol bis ( beta-aminoethyl ether ) -n , n'-tetraacetic acid , we have isolated from human placental membranes a major substrate for the epidermal growth factor ( urogastrone ) receptor kinase ( egf kinase ) .
C0086418
human
C0242275
epidermal growth factor