Glycosyltrasferase activity in developing sea-urchin embryos.
The developmental course of activity changes of 4 endogenous membrane glycosyltransferases: UDP-glucose : glycosyltrasferase, UDP-galactose : glycosyltransferase, GDP-mannose: glycosyltransferase, and UD-PN-acetylglucosamine : glycosyltransferase was determined in various stages of developing sea-urchin embryos from unfertilized eggs up to the 16-cell stage. The results show that there is a 2-fold increase in glycosyltransferase activity after fertilization. These results are discussed in relation to the postulated role of glycosyltransferases in mediating adhesion, recognition, and agglutination of cells and embryos.
D000818:Animals; D002462:Cell Membrane / Q000201:enzymology; D004625:Embryo, Nonmammalian / Q000201:enzymology*; D005306:Fertilization; D006155:Guanosine Diphosphate Mannose; D006602:Hexosyltransferases / Q000378:metabolism*; D012617:Sea Urchins / Q000196:embryology*; D014531:Uridine Diphosphate Galactose; D014532:Uridine Diphosphate Glucose; D014537:Uridine Diphosphate N-Acetylglucosamine
D014531:Uridine Diphosphate Galactose; D006155:Guanosine Diphosphate Mannose; D014537:Uridine Diphosphate N-Acetylglucosamine; D006602:Hexosyltransferases; D014532:Uridine Diphosphate Glucose