Unusual properties of sea urchin unfertilized egg chromatin

Unusual properties of sea urchin unfertilized egg chromatin

A typical nucleosomal pattern is not detected by electrophoretic analysis of sea urchin mature egg chromatin, following digestion with micrococcal nuclease. Moreover, at least 80 % of the egg nuclear DNA is resistant to nuclease attack. These unusual features of unfertilized egg chromatin, not share...

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Veröffentlicht in:Cell biology international reports 1980-01, Vol.4 (2), p.201-210
Hauptverfasser: Albanese, I., Di Liegro, I., Cognetti, G.
Format: Artikel
Sprache:eng
Schlagworte:
Animals
Chromatin - metabolism
Female
Histones - metabolism
Male
Micrococcal Nuclease - metabolism
Nucleosomes - metabolism
Nucleosomes - ultrastructure
Oocytes - ultrastructure
Ovum - metabolism
Ovum - ultrastructure
Sea Urchins - physiology
Sea Urchins - ultrastructure
Sperm Head - ultrastructure
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Zusammenfassung:A typical nucleosomal pattern is not detected by electrophoretic analysis of sea urchin mature egg chromatin, following digestion with micrococcal nuclease. Moreover, at least 80 % of the egg nuclear DNA is resistant to nuclease attack. These unusual features of unfertilized egg chromatin, not shared by oocytes or sperms, are discussed in view of the unique properties and fate of mature female germ cells.
ISSN:0309-1651
1878-240X
DOI:10.1016/0309-1651(80)90075-2