Distribution of nuclear proteins during maturation of the Xenopus oocyte.

The internal structure of the Xenopus oocyte is reorganized during the hormone-induced egg maturation. A cytological survey of the intracellular movements and changes is described. The behaviour of the nuclear lamina protein and of three nucleoplasmic proteins during these processes was studied by immunocytology. The proteins are finally deposited in the egg in different patterns brought about by their differential behaviour during the process of maturation.