An integrative protocol for the structure determination of the mouse ASC-PYD filament.

Details

Serval ID
serval:BIB_8490B4FAC262
Type
Article: article from journal or magazin.
Publication sub-type
Review (review): journal as complete as possible of one specific subject, written based on exhaustive analyses from published work.
Collection
Publications
Institution
Title
An integrative protocol for the structure determination of the mouse ASC-PYD filament.
Journal
Methods in enzymology
Author(s)
Mazur A., Broz P., Hiller S.
ISSN
1557-7988 (Electronic)
ISSN-L
0076-6879
Publication state
Published
Issued date
2019
Peer-reviewed
Oui
Volume
625
Pages
205-222
Language
english
Notes
Publication types: Journal Article
Publication Status: ppublish
Abstract
Several inflammasomes that activate as part of the eukaryotic innate immune response contain long helical filaments of the adaptor protein ASC as a central structural element. Here, we describe a technical protocol that has enabled the structure determination of the filament of the ASC pyrin domain. The protocol integrates data from cryo-electron microscopy and solid-state NMR spectroscopy into a single simulated annealing protocol to determine structural coordinates that fit all input data optimally. The structure shows that the ASC pyrin domain filament is formed by helical stacking of individual pyrin domains forms and that the CARD domains are flexibly attached to the filament outside. An artificial perturbation of the input data shows that the integrated structure determination protocol can allow high quality structures even at resolutions of the electron density map as low 8Å. The protocol is extendable to other structural input data from biochemical or biophysical experiments.
Keywords
Animals, CARD Signaling Adaptor Proteins/metabolism, CARD Signaling Adaptor Proteins/ultrastructure, Cryoelectron Microscopy, Inflammasomes/metabolism, Inflammasomes/ultrastructure, Magnetic Resonance Spectroscopy, Mice, Cryo-EM, Helical assembly, Inflammasome, Integrative structure determination, Protein filament, Solid-state NMR spectroscopy
Pubmed
Web of science
Create date
17/09/2019 13:13
Last modification date
20/01/2021 6:26
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