The cloning and characterization of the arom gene of Pneumocystis carinii.

S Banerji, A E Wakefield, A G Allen, D J Maskell, S E Peters, J M Hopkin
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引用次数: 50

Abstract

The arom gene, encoding a single polypeptide that catalyses five consecutive steps of the pre-chorismate aromatic amino acid biosynthetic pathway, has been cloned from the opportunistic pathogen Pneumocystis carinii. There is a single open reading frame of 4788 bp which includes an intron of 45 bp that does not introduce a stop codon into the sequence. Thus, the derived amino acid sequence consists of 1581 residues, which is highly homologous to all fungal AROM proteins studied to date. These data support the view that P. carinii is a fungus and imply that its aromatic amino acid biosynthesis is conventionally organized.

卡氏肺囊虫芳香基因的克隆与鉴定。
从条件致病菌卡氏肺囊虫中克隆出一个芳香基因,该基因编码一个多肽,催化前choris酸芳香氨基酸生物合成途径的五个连续步骤。有一个4788 bp的开放阅读框,其中包含一个45 bp的内含子,该内含子不向序列引入停止密码子。因此,衍生的氨基酸序列由1581个残基组成,与迄今为止研究的所有真菌AROM蛋白高度同源。这些数据支持了P. carinii是一种真菌的观点,并暗示其芳香氨基酸的生物合成是按常规组织的。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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