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首页> 外文期刊>The FEBS journal >Conserved pore-forming regions in polypeptide-transporting proteins
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Conserved pore-forming regions in polypeptide-transporting proteins

机译:多肽转运蛋白中的保守孔形成区

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摘要

Transport of solutes and polypeptides across membranes is an essential process for every cell. In the past, much focus has been placed on helical transporters. Recently, the beta-barrel-shaped transporters have also attracted some attention. The members of this family are found in the outer bacterial membrane and the outer membrane of endosymbiotically derived organelles. Here we analyze the features and the evolutionary development of a specified translocator family, namely the beta-barrel-shaped polypeptide-transporters. We identified sequence motifs, which characterize all transporters of this family, as well as motifs specific for a certain subgroup of proteins of this class. The general motifs are related to the structural composition of the pores. Further analysis revealed a defined distance of two motifs to the C-terminal portion of the proteins. Furthermore, the evolutionary relationship of the proteins and the motifs are discussed.
机译:溶质和多肽跨膜运输是每个细胞必不可少的过程。过去,人们一直将重点放在螺旋运输器上。最近,β桶形转运蛋白也引起了一些注意。该家族的成员存在于共生衍生细胞器的外细菌膜和外膜中。在这里,我们分析了指定的易位子家族,即β桶形多肽转运蛋白的特征和进化发展。我们鉴定了序列基序,这些基序表征了该家族的所有转运蛋白,以及特定于此类蛋白质某个亚组的基序。一般的图案与孔的结构组成有关。进一步的分析揭示了两个基序到蛋白质C末端部分的确定距离。此外,讨论了蛋白质和基序的进化关系。

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