Functional diversity of ankyrin repeats in microbial proteins.

Functional diversity of ankyrin repeats in microbial proteins.
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DOI:
10.1016/j.tim.2009.11.004
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发表时间:
2010-03
影响因子:
15.9
通讯作者:
Abu Kwaik Y
Abu Kwaik Y
中科院分区:
生物学1区
文献类型:
--
作者:
Al-Khodor S;Price CT;Kalia A;Abu Kwaik Y

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锚蛋白重复序列(ANK)是自然界中最常见的蛋白质-蛋白质相互作用基序,主要存在于真核蛋白中。各种致病或共生细菌和真核病毒的基因组测序鉴定了编码含ANK蛋白的许多基因,这些基因被认为是通过水平基因转移从真核生物获得的。然而,最近发现的额外的ANK蛋白编码的基因组中的古细菌和自由生活的细菌表明,无论是一个更古老的起源ANK基序或多个趋同进化事件。许多细菌病原体采用各种类型的分泌系统将含ANK的蛋白质递送到真核细胞中,在真核细胞中它们模拟或操纵各种宿主功能。了解这个蛋白质家族的分子和生物化学功能将增强我们对重要的宿主-微生物相互作用的理解。
The ankyrin repeat (ANK) is the most common protein-protein interaction motif in nature and predominantly found in eukaryotic proteins. The genome sequencing of various pathogenic or symbiotic bacteria and eukaryotic viruses identified numerous genes encoding ANK-containing proteins that were proposed to have been acquired from eukaryotes by horizontal gene transfer. However, the recent discovery of additional ANK-containing proteins encoded in the genomes of archaea and free-living bacteria suggests either a more ancient origin of the ANK motif or multiple convergent evolution events. Many bacterial pathogens employ various types of secretion systems to deliver ANK-containing proteins into eukaryotic cells where they mimic or manipulate various host functions. Understanding the molecular and biochemical functions of this family of proteins will enhance our understanding of important host-microbe interactions.
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