Chemical shifts-based similarity restraints improve accuracy of RNA structures determined via NMR.

ABSTRACT: Determination of structure of RNA via NMR is complicated in large part by the lack of a precise parameterization linking the observed chemical shifts to the underlying geometric parameters. In contrast to proteins, where numerous high-resolution crystal structures serve as coordinate templates for this mapping, such models are rarely available for smaller oligonucleotides accessible via NMR, or they exhibit crystal packing and counter-ion binding artifacts that prevent their use for the chemical shifts analysis. On the other hand, NMR-determined structures of RNA often are not solved at the density of restraints required to precisely define the variable degrees of freedom. In this study we sidestep the problems of direct parameterization of the RNA chemical shifts/structure relationship an

SUBMITTER: Lawrence C 

PROVIDER: S-EPMC7668244 | biostudies-literature | 2020 Dec

REPOSITORIES: biostudies-literature