PilB from Streptococcus sanguinis is a bimodular type IV pilin with a direct role in adhesion
PilB from Streptococcus sanguinis is a bimodular type IV pilin with a direct role in adhesion
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来自血链球菌的 PilB 是一种双模块 IV 型菌毛蛋白,在粘附中具有直接作用
DOI:
10.1101/2021.01.27.428410
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发表时间:
2021
期刊:
影响因子:
--
通讯作者:
Raynaud C
中科院分区:
文献类型:
--
作者:
Raynaud C
Type IV pili (T4P) are functionally versatile filamentous nanomachines, nearly ubiquitous in prokaryotes. They are predominantly polymers of one major pilin but also contain minor pilins whose functions are often poorly defined and likely to be diverse. Here, we show that the minor pilin PilB from the T4P ofStreptococcus sanguinisdisplays an unusual bimodular three-dimensional structure with a bulky von Willebrand factor A–like (vWA) module “grafted” onto a small pilin module via a short loop. Structural modeling suggests that PilB is only compatible with a localization at the tip of T4P. By performing a detailed functional analysis, we found that 1) the vWA module contains a canonical metal ion–dependent adhesion site, preferentially binding Mg2+and Mn2+, 2) abolishing metal binding has no impact on the structure of PilB or piliation, 3) metal binding is important forS. sanguinisT4P–mediated twitching motility and adhesion to eukaryotic cells, and 4) the vWA module shows an intrinsic binding ability to several host proteins. These findings reveal an elegant yet simple evolutionary tinkering strategy to increase T4P functional versatility by grafting a functional module onto a pilin for presentation by the filaments. This strategy appears to have been extensively used by bacteria, in which modular pilins are widespread and exhibit an astonishing variety of architectures.
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影响因子:
4.8
作者:
Miguel Gutierrez;S. Kolappan;Bailey A. Burrell;L. Craig
通讯作者:
L. Craig
DOI:
10.1074/jbc.m006548200
发表时间:
2001
期刊:
The Journal of Biological Chemistry
影响因子:
--
作者:
R. Romijn;B. Bouma;Winnifred Wuyster;P. Gros;J. Kroon;J. Sixma;E. Huizinga
通讯作者:
E. Huizinga
影响因子:
6.7
作者:
Hilleringmann M;Giusti F;Baudner BC;Masignani V;Covacci A;Rappuoli R;Barocchi MA;Ferlenghi I
通讯作者:
Ferlenghi I
影响因子:
5.6
作者:
Kawahara, Kazuki;Oki, Hiroya;Nakamura, Shota
通讯作者:
Nakamura, Shota
DOI:
10.1097/iae.0000000000001602
发表时间:
2017
期刊:
Retina (Philadelphia, Pa.)
影响因子:
--
作者:
Todorich,Bozho;Thanos,Aristomenis;Yonekawa,Yoshihiro;Thomas,BenjaminJ;Faia,LisaJ;Chang,Emmanuel;Shulman,Julia;Olsen,KarlR;Blair,MichaelP;Shapiro,MichaelP;Ferrone,Philip;Vajzovic,Lejla;Toth,CynthiaA;Lee,ThomasC;Robinson,
通讯作者:
Robinson,