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首页> 外文期刊>Journal of Experimental Botany >Novel roles of plant RETINOBLASTOMA-RELATED (RBR) protein in cell proliferation and asymmetric cell division
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Novel roles of plant RETINOBLASTOMA-RELATED (RBR) protein in cell proliferation and asymmetric cell division

机译:植物视网膜母细胞瘤相关(RBR)蛋白在细胞增殖和不对称细胞划分中的新颖作用

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摘要

The retinoblastoma (Rb) protein was identified as a human tumour suppressor protein that controls various stages of cell proliferation through the interaction with members of the E2F family of transcription factors. It was originally thought to be specific to animals but plants contain homologues of Rb, called RETINOBLASTOMA-RELATED (RBR). In fact, the Rb-E2F module seems to be a very early acquisition of eukaryotes. The activity of RBR depends on phosphorylation of certain amino acid residues, which in most cases are well conserved between plant and animal proteins. In addition to its role in cell-cycle progression, RBR has been shown to participate in various cellular processes such as endoreplication, transcriptional regulation, chromatin remodelling, cell growth, stem cell biology, and differentiation. Here, we discuss the most recent advances to define the role of RBR in cell proliferation and asymmetric cell division. These and other reports clearly support the idea that RBR is used as a landing platform of a plethora of cellular proteins and complexes to control various aspects of cell physiology and plant development.
机译:视网膜母细胞瘤(RB)蛋白被鉴定为人肿瘤抑制蛋白,通过与E2F系列转录因子的成员的相互作用控制细胞增殖的各个阶段。它最初被认为是特异性动物,但植物含有RB的同源物,称为视网膜母细胞瘤相关(RBR)。事实上,RB-E2F模块似乎是一项非常早就获得真核生物。 RBR的活性取决于某些氨基酸残基的磷酸化,在大多数情况下,在植物和动物蛋白之间很好地保守。除了在细胞周期进展中的作用之外,RBR还被证明参与各种细胞过程,例如本发明杂志,转录调节,染色质重塑,细胞生长,干细胞生物学和分化。在这里,我们讨论最新的进展,以确定RBR在细胞增殖和不对称细胞分裂中的RBR作用。这些和其他报告清楚地支持RBR被用作血清细胞蛋白和复合物的着陆平台,以控制细胞生理和植物发育的各个方面。

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