Sphingomyelin and ceramide: phosphoethanolamine synthesis in ram spermatozoa plasma membrane.
1. The possibility for sphingomyelin and ceramide: phosphoethanolamine synthesis in ram spermatozoa plasma membranes has been established. 2. Ceramide: phosphoethanolamine formation appears to be higher than the synthesis of sphingomyelin. 3. The pH optimum of the phosphatidylethanolamine: ceramide-phosphoethanolamine transferase is about 7.0. An inhibition of its activity was observed in the presence of Ca2+ and Zn2+ ions.
Hinkovska-Galcheva
V Ts
VTs
Central Laboratory of Biophysics, Bulgarian Academy of Sciences, Sofia.
Petkova
D H
DH
Nikolova
M N
MN
D000818:Animals; D002462:Cell Membrane / Q000378:metabolism; D066298:In Vitro Techniques; D008297:Male; D010713:Phosphatidylcholines / Q000378:metabolism; D010714:Phosphatidylethanolamines / Q000378:metabolism; D012756:Sheep; D013081:Sperm Motility; D013094:Spermatozoa / Q000378:metabolism*; D013109:Sphingomyelins / Q000096:biosynthesis*
D010713:Phosphatidylcholines; D010714:Phosphatidylethanolamines; D013109:Sphingomyelins; C060281:ceramide phosphoethanolamine