𝔖 Bobbio Scriptorium
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Tubulin and microtubule-like structures in mammalian acrosomes

✍ Scribed by Stambaugh, R. ;Smith, M.

Book ID
102336843
Publisher
John Wiley and Sons
Year
1978
Tongue
English
Weight
477 KB
Volume
203
Category
Article
ISSN
0022-104X

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✦ Synopsis

Immunofluorescence and electron microscopy were used to demonstrate the presence of tubulin and microtubule-like structures in rabbit and rhesus monkey sperm acrosomes. The distribution of tubulin within the acrosome appeared similar to the distribution of proteolytic activity, suggesting an association of proteinase with these structures. Electron microscopy of rhesus monkey sperm incubated in vitro demonstrated a progressive condensation of the acrosomal matrix into microtubule-like structure. A system of this type could explain the linear patterns of silver-proteinate staining in the pentration tunnel through the zona pellucida.

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## Abstract We have previously shown that γ‐tubulin, the third member of the tubulin family that functions in microtubule nucleation, when overexpressed, accumulates throughout the cytoplasm and forms numerous ectopic microtubule nucleation sites in mammalian cells (Shu and Joshi [1995] J. Cell. Bi