title: A sperm-specific enolase.
abstract: An unusual enolase isoenzyme, ENO S, was found in human, ram and mouse spermatozoa. This isoenzyme is unique to spermatozoa and distinguished from the somatic enolases ENO 1, ENO 2 and ENO 3 by electrophoretic mobility, high thermostability and ability to undergo structural alteration at high temperatures. The pattern of expression of ENO S during sperm differentiation suggests that this isoenzyme is synthesized relatively late in the presence of a haploid genome.
mesh_terms: D000818:Animals; D004592:Electrophoresis, Starch Gel; D006358:Hot Temperature; D006801:Humans; D007527:Isoenzymes / Q000032:analysis*; D008297:Male; D051379:Mice; D010751:Phosphopyruvate Hydratase / Q000032:analysis*; D012756:Sheep; D013079:Sperm Maturation; D013094:Spermatozoa / Q000201:enzymology*
chemical_list: D007527:Isoenzymes; D010751:Phosphopyruvate Hydratase