@article{oai:nagoya.repo.nii.ac.jp:00011924,
 author = {Iuchi, Ichiro and Ha, Chang-Rak and Matsuda, Kaori},
 journal = {The Fish Biology Journal Medaka},
 month = {},
 note = {The envelope, chorion, of unfertilized eggs of medaka (Oryzias latipes) consists mainly of glycoprotein components, ZI-1,2 (74-76-kD) and ZI-3 (49-kD). During the chorion hardening after egg activation, all the components are polymerized by the action of transglutaminase responsible for γ-glutamyl-ε-lysine crosslink formation. Prior to the polymerization, ZI-1,2 are cleaved by an enzyme(s) released from egg to change into 58-62-kD components. We discuss the possibility that the limited degradation of ZI-1,2 promotes the polymerization of chorion components. Thus the chorion hardening reaction is catalyzed by a multiple enzyme system.},
 pages = {15--20},
 title = {Chorion hardening in medaka (Oryzias latipes) egg},
 volume = {7},
 year = {1995}
}