Affiliation:
1. Department of Physiology and Biophysics University of California, Irvine Irvine CA USA
Abstract
As one of the most fatal substances, botulinum neurotoxins (BoNTs) have never acted solo to accomplish their formidable missions. Most notably, nontoxic nonhemagglutinin (NTNH), a protein co‐secreted with BoNT by bacteria, plays critical roles to stabilize and protect BoNT by tightly associating with it to form the minimal progenitor toxin complex (M‐PTC). A new cryo‐EM structure of the M‐PTC of a BoNT‐like toxin from Weissella oryzae (BoNT/Wo) reveals similar assembly modes between M‐PTC/Wo and that of other BoNTs, yet also reveals some unique structural features of NTNH/Wo. These findings shed new light on the potential versatile roles of NTNH during BoNT intoxication.
Funder
National Institutes of Health
Subject
Cell Biology,Molecular Biology,Biochemistry