Structure and synthesis of vitellogenin and vitellin from Calliphora erythrocephala

Egg extract of the blowfly, Calliphora erythrocephala, when analyzed by pore limit gradient acrylamide gel electrophoresis, was found to contain a major protein of mol. wt 210,000. A protein with the same mobility occurs in female, but not male haemolymph. The egg and haemolymph components were shown by immunochemical techniques to be female-specific, and are identified as the vitellin and vitellogenin, respectively. Under denaturing …