Bicaudal-D is essential for egg chamber formation and cytoskeletal organization in drosophila oogenesis.

Bicaudal-D is essential for egg chamber formation and cytoskeletal organization in drosophila oogenesis.
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Bicaudal-D 对于果蝇卵子发生中的卵室形成和细胞骨架组织至关重要。

DOI:
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发表时间:
2001
影响因子:
2.7
通讯作者:
Ruth Steward
Ruth Steward
中科院分区:
生物学3区
文献类型:
--
作者:
Junyoung Oh;Ruth Steward

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Bicaudal-D (bicd)是将决定性mrna和蛋白质转运到卵母细胞所必需的,这是卵母细胞分化的重要步骤。Bic-D蛋白含有四个定义明确的七元重复结构域,具有中间丝蛋白的特征。我们描述了表达突变的bbic - d蛋白(bbic - d (H))的女性卵巢表型,每个七肽重复结构域都被删除。我们在突变卵巢中观察到的卵泡细胞迁移的改变表明,Bic-D在种系中起作用,并指导体细胞卵泡细胞向内迁移。在精子中,Bic-D对于卵室的组织和卵母细胞和乳细胞的结构完整性是必需的。对Bic-D(H)卵巢中极化微管网络的研究表明,在卵子发生过程中,极化微管网络的建立和维持都需要Bic-D功能。为了解释多效性Bic-D表型所暗示的多种功能,我们提出Bic-D蛋白可以形成丝状结构,并代表细胞骨架的一个完整的重要部分。
Bicaudal-D (Bic-D) is required for the transport of determinant mRNAs and proteins to the presumptive oocyte, an essential step in the differentiation of the oocyte. Bic-D protein contains four well-defined heptad repeat domains characteristic of intermediate filament proteins. We characterized the ovarian phenotypes of females expressing mutant Bic-D proteins (Bic-D(H)) deleted for each of the heptad repeat domains. The altered migration of follicle cells we observe in mutant ovaries suggests that Bic-D functions in the germline and directs the inward migration of somatic follicle cells. In the germarium Bic-D is required for the organization of the egg chamber and the structural integrity of the oocyte and nurse cells. Examination of the polarized microtubule network in Bic-D(H) ovaries shows that Bic-D function is required for both the establishment of the polarized microtubule network and its maintenance throughout oogenesis. To explain the multiple functions suggested by the pleiotropic Bic-D phenotype, we propose that Bic-D protein could form itself a filamentous structure and represent an integral, essential part of the cytoskeleton.
用于分析果蝇遗传嵌合体的细胞自主、普遍存在的标记。
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