• Korean journal of applied entomology
• /
• v.29 no.3
• /
• pp.157-164
• /
• 1990

The surface patterns and the structures of transverse section of the egg-shell of the sikmoth, Bombyx mandarina, have been described by scanning electron microscope. Three spatially differentiated cross section, called lamellar, conic pillar and cover layers, are found on the mature eg-shell. Silkmoth chorion proteins were detected more than 80 components from a single chorion by two-dimensional electrophoresis. Major protein components of the egg-shell have bee identified on the basis of their isoelectric points and molecular weights, pH 4-6 and 6-30 kd. Several protein components are found entirely or predominantly in th cover layers.

• Korean journal of applied entomology
• /
• v.32 no.4
• /
• pp.420-425
• /
• 1993

The programme of silkrnoth chorion protem synthetIc changes is autonomous i. e.,it is imple I mented WIth normal kinetics by follicles cultured in isolation in a defined tIssue culture medium. On the basis of protem synthetic profiles, 8 stages of chorwgenesis are defined. Detail a analysis of the proteins of chorion of Bombyx mandarina, reveals more than 17 components by eletrophoretic mobility and synthetic kinetics. We have defined three abbreviated synthetlc s stages, based on the pattern of protein synthesized at early, middle, and late synthetic stages