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Cloning and characterization of Rab Escort Protein (REP) from Arabidopsis thaliana.

机译:拟南芥Rab Escort蛋白(REP)的克隆和鉴定。

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摘要

Intracellular vesicular trafficking is regulated by Rab proteins, small GTPases that require posttranslational geranylgeranylation for biological activity. This covalent modification is catalyzed by Rab geranylgeranyl transferase (RabGGTase) and proceeds only in the presence of accessory Rab Escort Protein (REP). In this communication, we report the cloning and characterization of REP gene of Arabidopsis thaliana. Highest expression of REP mRNA was detected in leaves and flowers in contrast to stems and roots. AtREP is recognized by anti-rat REP1 serum. Interaction of AtREP with the protein substrate is presented, as well as a structural model obtained through homology modeling, based on the known structure of rat REP1.
机译:细胞内囊泡运输受Rab蛋白(小型GTPases)调节,Rab蛋白需要翻译后的geranylgeranyylation具有生物学活性。这种共价修饰被Rab香叶基香叶基转移酶(RabGGTase)催化,并且仅在存在辅助性Rab Escort蛋白(REP)的情况下进行。在本交流中,我们报道了拟南芥REP基因的克隆和鉴定。与茎和根相比,在叶片和花朵中检测到REP mRNA的最高表达。 AtREP被抗大鼠REP1血清识别。提出了AtREP与蛋白质底物的相互作用,以及基于大鼠REP1的已知结构,通过同源性建模获得的结构模型。

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