Author:
Kalitsis Paul,Earle Elizabeth,Fowler Kerry J.,Choo K.H. Andy
Abstract
Bub3 is a conserved component of the mitotic spindle assembly complex. The protein is essential for early development in Bub3gene-disrupted mice, evident from their failure to survive beyond day 6.5–7.5 postcoitus (pc). Bub3 null embryos appear normal up to day 3.5 pc but accumulate mitotic errors from days 4.5–6.5 pc in the form of micronuclei, chromatin bridging, lagging chromosomes, and irregular nuclear morphology. Null embryos treated with a spindle-depolymerising agent fail to arrest in metaphase and show an increase in mitotic disarray. The results confirm Bub3 as a component of the essential spindle checkpoint pathway that operates during early embryogenesis.
Publisher
Cold Spring Harbor Laboratory
Subject
Developmental Biology,Genetics
Cited by
229 articles.
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