Calyculin-A Induces Cleavage in a Random Plane in Unfertilized Sea Urchin Eggs
نویسندگان
چکیده
منابع مشابه
Calyculin A induces contractile ring-like apparatus formation and condensation of chromosomes in unfertilized sea urchin eggs.
Calyculin A, a protein phosphatase inhibitor, induced cleavage-like morphological change in unfertilized sea urchin eggs. A contractile ring-like apparatus containing both filamentous actin and myosin was formed in the cleavage furrow. Wheat germ agglutinin receptors were also found in the same region. The eggs did not develop further after constriction of the ring. No aster-like microtubular s...
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INTRODUCTION We have recently put forward a theory linking mitosis with cleavage, in which we suggest that cleavage is caused by an expansion of the cell cortex which starts at either pole of the cell and later moves round to the region of the furrow (Mitchison, 1952). There is evidence that this expansion is brought about by substances diffusing from the two groups of daughter chromosomes whic...
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ژورنال
عنوان ژورنال: The Biological Bulletin
سال: 2009
ISSN: 0006-3185,1939-8697
DOI: 10.1086/bblv216n1p40