Structural Characterization of Biomolecules through Atomistic Simulations Guided by DEER Measurements.

ABSTRACT: Double electron-electron resonance (DEER) is a popular technique that exploits attached spin labels to probe the collective dynamics of biomolecules in a native environment. Like most spectroscopic approaches, DEER detects an ensemble of states accounting for biomolecular dynamics as well as the labels' intrinsic flexibility. Hence, the DEER data alone do not provide high-resolution structural information. To disentangle this variability, we introduce a minimally biased simulation method to sample a structural ensemble that reproduces multiple experimental signals within the uncertainty. In contrast to previous approaches, our method targets the raw data themselves, and thereby it brings forth an unbiased molecular interpretation of the experiments. After validation on the T4 lysozyme, we

SUBMITTER: Marinelli F 

PROVIDER: S-EPMC6860373 | biostudies-literature | 2019 Feb

REPOSITORIES: biostudies-literature