The cytokinesis gene KEULE encodes a Sec1 protein that binds the syntaxin KNOLLE.

The cytokinesis gene KEULE encodes a Sec1 protein that binds the syntaxin KNOLLE.
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DOI:
10.1083/jcb.152.3.531
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发表时间:
2001-02-05
期刊:
The Journal of cell biology
影响因子:
--
通讯作者:
Jürgens G
Jürgens G
中科院分区:
其他
文献类型:
--
作者:
Assaad FF;Huet Y;Mayer U;Jürgens G

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KEULE是拟南芥胞质分裂所必需的。我们已经定位克隆了KEULE基因,并表明它编码Sec 1蛋白。KEULE在整个植物中表达,但似乎在分裂组织中富集。细胞分裂缺陷突变体部门观察到野生型植物与KEULE-绿色荧光蛋白基因融合转化后,在所有体细胞组织中,这表明KEULE是必需的,不仅在胚胎发生过程中,但在所有阶段的植物的生命周期。KEULE是Sec 1蛋白的特征,因为它似乎以两种形式存在:可溶性或与膜外周相关。更重要的是,KEULE结合了突触分裂特异性突触融合蛋白诺勒。Sec 1蛋白是囊泡运输的关键调节因子,能够整合大量的细胞内和/或细胞间信号。作为一种与细胞分裂相关的Sec 1蛋白,KEULE似乎代表了细胞周期进程和膜融合装置之间的一种新的联系。
KEULE is required for cytokinesis in Arabidopsis thaliana. We have positionally cloned the KEULE gene and shown that it encodes a Sec1 protein. KEULE is expressed throughout the plant, yet appears enriched in dividing tissues. Cytokinesis-defective mutant sectors were observed in all somatic tissues upon transformation of wild-type plants with a KEULE–green fluorescent protein gene fusion, suggesting that KEULE is required not only during embryogenesis, but at all stages of the plant's life cycle. KEULE is characteristic of a Sec1 protein in that it appears to exist in two forms: soluble or peripherally associated with membranes. More importantly, KEULE binds the cytokinesis-specific syntaxin KNOLLE. Sec1 proteins are key regulators of vesicle trafficking, capable of integrating a large number of intra- and/or intercellular signals. As a cytokinesis-related Sec1 protein, KEULE appears to represent a novel link between cell cycle progression and the membrane fusion apparatus.
DOI: 10.1104/pp.124.1.135
发表时间: 2000-09-01
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