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The Potential Role of SnRK1 Protein Kinases in the Regulation of Cell Division in Arabidopsis thaliana

机译:SnRK1蛋白激酶在拟南芥细胞分裂调控中的潜在作用。

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It is known that the sucrose nonfermenting-1 (SNF1)-related protein kinase (SnRK1) subfamily participates in the regulation of carbohydrate metabolism and energy balance. These enzymes are multifunctional and can participate in many other important cellular processes. The role of the SnRK1 protein kinases (KIN10 and KIN11) in the regulation of cell division in Arabidopsis thaliana has been studied in this work. The KIN10 and KIN11 gene knockout lines of A. thaliana were used for this purpose (http://arabidopsis.info/). A low mitotic index was recorded in cells of these mutant lines and a decreased expression level was shown in the cell proliferation markersthe CYCB1;1 gene (B1 type cyclin) and the plant homolog BRCA1 (Breast Cancer Suppressor Protein). The significantly lower mitotic index and expression level of CYCB1;1 and BRCA1 were observed in the mutants grown in the conditions of energy deficiency. The higher expression of CYCB1;1/BRCA1 and KIN10/KIN11 genes was also recorded in the suspension culture of A. thaliana compared with intact sprouts. These data may confirm a possible role of the KIN10/KIN11 protein kinases in the regulation of cell proliferative activity.
机译:已知蔗糖非发酵-1(SNF1)相关蛋白激酶(SnRK1)亚家族参与碳水化合物代谢和能量平衡的调节。这些酶是多功能的,可以参与许多其他重要的细胞过程。在这项工作中,已经研究了SnRK1蛋白激酶(KIN10和KIN11)在拟南芥细胞分裂调控中的作用。拟南芥的KIN10和KIN11基因敲除品系用于此目的(http://arabidopsis.info/)。在这些突变株的细胞中记录到低的有丝分裂指数,并且在细胞增殖标志物CYCB1; 1基因(B1型细胞周期蛋白)和植物同源物BRCA1(乳腺癌抑制蛋白)中显示出降低的表达水平。在能量缺乏条件下生长的突变体中,CYCB1; 1和BRCA1的有丝分裂指数和表达水平明显降低。与完整芽苗相比,拟南芥悬浮培养中还记录了CYCB1; 1 / BRCA1和KIN10 / KIN11基因的较高表达。这些数据可能证实KIN10 / KIN11蛋白激酶在调节细胞增殖活性中的可能作用。

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