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Occurrence of ubiquitin during spermiogenesis in Chara vulgaris
M Kwiatkowska1, A Wojtczak, K Popłońska
1Department of Cytophysiology, University of Lódź, Poland. katcytof@biol.uni.lodz.pl
Folia Histochemica Et Cytobiologica
|May 26, 2001
Abstract:
Experiments with an anti-ubiquitin antibody proved the presence of ubiquitin in spermatids at all spermiogenesis stages in Charta vulgaris. Its level increased before marked ultrastructural changes of spermatids correlated with disappearance of somatic proteins (histones) and appearance of protamine-type generative proteins. The obtained results seem to confirm our earlier hypotheses concerning a significant role of ubiquitin-proteasome system in Chara spermatozoid differentiation.