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Characterization of novel lectins from Burkholderia pseudomallei and Chromobacterium violaceum with seven-bladed beta-propeller fold

机译:七叶β-螺旋桨折叠的Burkholderia pseudomallei和紫杉杆菌的新型凝集素的特征

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摘要

Burkholderia pseudomallei and Chromobacterium violaceum are bacteria of tropical and subtropical soil and water that occasionally cause fatal infections in humans and animals. Microbial lectins mediate the adhesion of organisms to host cells, which is the first phase in the development of infection. Here we report the discovery of two novel lectins from the above-mentioned bacteria - BP39L and CV39L. The crystal structures revealed that the lectins possess a seven-bladed beta-propeller fold. Functional studies conducted on a series of oligo- and polysaccharides confirmed the preference of BP39L for mannosylated saccharides and CV39L for rather more complex polysaccharides with a monosaccharide preference for beta-L-fucose. The presented data indicate that the proteins belong to a currently unknown family of lectins. (C) 2019 Elsevier B.V. All rights reserved.
机译:Burkholderia pseudomallei和vircobacterium violaceum是热带和亚热带土壤和水的细菌,偶尔会导致人类和动物的致命感染。 微生物凝集素介导生物体对宿主细胞的粘附,这是感染发育中的第一阶段。 在这里,我们报告了来自上述细菌 - BP39L和CV39L的两种新建凝集素的发现。 晶体结构透露,凝集素具有七叶片β-螺旋桨折叠。 在一系列寡糖和多糖上进行的功能性研究证实了BP39L对甘露糖苷化的糖和CV39L的偏好,而是具有对β-L-粘膜的单糖偏好的相当复杂的多糖。 呈现的数据表明蛋白质属于目前未知的凝集家族。 (c)2019 Elsevier B.v.保留所有权利。

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