Dynamics of a type 2 secretion system pseudopilus unraveled by complementary approaches.

ABSTRACT: Secretion pili, bacterial fibers responsible for transporting proteins to the extracellular milieu in some secretion systems, are very strong structures but at the same time highly flexible. Their flexibility and helical symmetry make structure determination at atomic resolution a challenging task. We have previously used an integrative structural biology approach including liquid-state NMR, cryo-electron microscopy (cryo-EM), and modeling to determine the pseudo-atomic resolution structure of the type 2 secretion system pseudopilus in a mutant form, where we employed NMR to determine the high resolution structure of the pilin (the monomer building block of the pilus). In this work, we determine the pseudo-atomic structure of the wild type pilus, and compare the dynamics of wild type and m

SUBMITTER: Bardiaux B 

PROVIDER: S-EPMC6692295 | biostudies-literature | 2019 Jul

REPOSITORIES: biostudies-literature