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的氨基酸序列相当保守,而且它们对于酵母的生长都是必需的,因此这5个亚基就被称为核心亚基,而其他亚基则被称为非核心亚基。 (英文)Pain VM. Initiation of protein synthesis in eukaryotic cells. Eur J Biochem. 1996, 236: