Mechanism and inhibition of Streptococcus pneumoniae IgA1 protease.
Mechanism and inhibition of Streptococcus pneumoniae IgA1 protease.
复制标题
肺炎链球菌IgA1蛋白酶的作用机制及抑制作用。
DOI:
10.1038/s41467-020-19887-3
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发表时间:
2020-11-27
影响因子:
16.6
通讯作者:
Eisenmesser E
中科院分区:
文献类型:
--
作者:
Wang Z;Rahkola J;Redzic JS;Chi YC;Tran N;Holyoak T;Zheng H;Janoff E;Eisenmesser E
Opportunistic pathogens such as Streptococcus pneumoniae secrete a giant metalloprotease virulence factor responsible for cleaving host IgA1, yet the molecular mechanism has remained unknown since their discovery nearly 30 years ago despite the potential for developing vaccines that target these enzymes to block infection. Here we show through a series of cryo-electron microscopy single particle reconstructions how the Streptococcus pneumoniae IgA1 protease facilitates IgA1 substrate recognition and how this can be inhibited. Specifically, the Streptococcus pneumoniae IgA1 protease subscribes to an active-site-gated mechanism where a domain undergoes a 10.0 Å movement to facilitate cleavage. Monoclonal antibody binding inhibits this conformational change, providing a direct means to block infection at the host interface. These structural studies explain decades of biological and biochemical studies and provides a general strategy to block Streptococcus pneumoniae IgA1 protease activity to potentially prevent infection. Pathogenic IgA1 metalloproteases block the initial host immune response by cleaving host IgA1. Using cryoEM, the authors here provide structural insights into the substrate recognition mechanism of Streptococcus pneumoniae IgA1 protease, and develop a protease-inhibiting antibody.
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影响因子:
6.4
作者:
Bek-Thomsen, Malene;Poulsen, Knud;Kilian, Mogens
通讯作者:
Kilian, Mogens
DOI:
10.1107/s0907444912048664
发表时间:
2013-03-01
影响因子:
2.2
作者:
Correa, Agustin;Trajtenberg, Felipe;Buschiazzo, Alejandro
通讯作者:
Buschiazzo, Alejandro
影响因子:
8
作者:
Chi, Ying-Chih;Rahkola, Jeremy T.;Eisenmesser, Elan Z.
通讯作者:
Eisenmesser, Elan Z.
DOI:
10.1107/s0907444909052925
发表时间:
2010-02
期刊:
Acta crystallographica. Section D, Biological crystallography
影响因子:
--
作者:
Adams PD;Afonine PV;Bunkóczi G;Chen VB;Davis IW;Echols N;Headd JJ;Hung LW;Kapral GJ;Grosse-Kunstleve RW;McCoy AJ;Moriarty NW;Oeffner R;Read RJ;Richardson DC;Richardson JS;Terwilliger TC;Zwart PH
通讯作者:
Zwart PH
影响因子:
3
作者:
Pettersen, EF;Goddard, TD;Ferrin, TE
通讯作者:
Ferrin, TE