[Nepsilon-(beta-Aspartyl)lysine and Nepsilon-(gamma-glutamyl)lysine crosslinkings in bovine colostrum (author's transl)].
In bovine colostrum which was defatted and totally hydrolyzed by proteolytic enzymes, the isopeptides Asp Lys and Glu Lys were identified by ion-exchange chromatography and preparative separation. Isopeptides were identified in two of seven samples of colostrum. It is still to be clarified whether there is a correlation between the amound of gamma-glutamyltransferase and the appearance of these crosslinkings.
D000818:Animals; D001224:Aspartic Acid / Q000032:analysis; D002417:Cattle; D003126:Colostrum / Q000032:analysis*; D005260:Female; D005973:Glutamine / Q000032:analysis; D008239:Lysine / Q000032:analysis; D009842:Oligopeptides / Q000032:analysis*; D011247:Pregnancy
D009842:Oligopeptides; D005973:Glutamine; D001224:Aspartic Acid; D008239:Lysine
Vorkommen der Isopeptidbindungen Nepsilon-(beta-Aspartyl)lysin und Nepsilon-(gamma-glutamyl)lysin in Rindercolostrum