ABSTRACT

Coat Protein I (COPI) consists of a complex (coatomer) formed by seven subunits (α-, β-, β’-, γ-, δ-, ε-, and ζ-COP) that is recruited to Golgi membranes to form vesicles that shuttle from the Golgi apparatus to the ER and between Golgi stacks. Recently, it has been described that loss of function mutants of the two Arabidopsis β-COP genes, β1-COP and β2-COP, showed increased sensitivity to salt stress (NaCl). Using a mixture of either Na⁺ or Cl⁻ salts, we have now found that β-COP mutants are specifically and highly sensitive to chloride ions.

中文翻译：

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ß-COP突变体对氯离子具有特定的高敏感性

摘要

外壳蛋白I（COPI）由由七个亚基（α-，β-，β'-，γ-，δ-，ε-和ζ-COP）形成的复合物（涂层聚合物）组成，该复合物被募集到高尔基膜上以形成从高尔基体穿梭到内质网以及高尔基体之间的囊泡。近来，已经描述了两个拟南芥β-COP基因β1-COP和β2-COP的功能突变体的丧失显示出对盐胁迫（NaCl）的敏感性增加。无论使用的Na的混合物⁺或Cl ^-盐，我们现在已经发现，β-COP突变体特异性和氯离子高度敏感。