Meiotic breakdown of nuclear envelope in oocytes of Spisula solidissima involves phosphorylation and release of nuclear lamin.

Meiotic breakdown of nuclear envelope in oocytes of Spisula solidissima involves phosphorylation and release of nuclear lamin.
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Spisula Solidissima 卵母细胞核膜的减数分裂破坏涉及核纤层蛋白的磷酸化和释放。

DOI:
10.1016/0012-1606(88)90349-1
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发表时间:
1988
影响因子:
2.7
通讯作者:
Goldman,R
Goldman,R
中科院分区:
生物学3区
文献类型:
--
作者:
Dessev,G;Goldman,R

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在海蛤(Spisula solidissima)成熟卵母细胞的减数分裂核膜分解(NEBD)过程中,67-kDa层粘连蛋白被广泛磷酸化,同时也被溶解。这伴随着核直径的减小。槲皮素是一种蛋白激酶抑制剂,不影响层粘连蛋白的磷酸化和释放,也不影响NEBD本身,但特异性地抑制NEBD所依赖的一组蛋白质的早期磷酸化。我们的研究结果表明,减数分裂的NEBD上皮卵母细胞可能受一种涉及纤层蛋白磷酸化的机制控制,类似于有丝分裂中被认为是运作的机制。
During meiotic nuclear envelope breakdown (NEBD) in maturing oocytes of the surf clam,Spisula solidissima, the 67-kDa lamin is extensively phosphorylated, concurrently with its solubilization. This is accompanied by a reduction of the nuclear diameter. Quercetin, a protein kinase inhibitor, does not affect lamin phosphorylation and release, nor NEBD per se, but specifically inhibits the early phosphorylation of a set of proteins, on which NEBD seems to depend. Our results suggest that meiotic NEBD inSpisulaoocytes may be controlled by a mechanism which involves lamin phosphorylation, similar to that which is thought to operate in mitosis.
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