[Actin-binding proteins in Xenopus laevis oocytes and eggs. I. Presence and distribution of alpha-actinin and vinculin].
We studied the distribution of two actin-binding proteins, alpha-actinin and vinculin, in the oocytes and eggs of Xenopus laevis. These proteins are localized in the cortical area. A morphological connection of vinculin with the mirofilaments and plasma membrane was shown; the actin matrix in the egg was gold-labeled more intensely than in the oocyte. A possible role of these proteins in development of the cortical contractility and rearrangement of the actin cytoskeleton during oocyte maturation is discussed.
Kol'tsov Institute of Developmental Biology, Russian Academy of Sciences, Moscow, Russia.
L V
LV
Riabova
O P
OP
Krylyshkina
S G
SG
Vasetskiĭ
D000185:Actinin / Q000032:analysis*; D000199:Actins / Q000378:metabolism*; D000818:Animals; D004527:Egg Proteins / Q000378:metabolism*; D008854:Microscopy, Electron; D009865:Oocytes / Q000378:metabolism*; D010063:Ovum / Q000378:metabolism*; D011485:Protein Binding; D016596:Vinculin / Q000032:analysis*; D014982:Xenopus laevis
D000199:Actins; D004527:Egg Proteins; D000185:Actinin; D016596:Vinculin