How Co-translational Folding of Multi-domain Protein Is Affected by Elongation Schedule: Molecular Simulations.

ABSTRACT: Co-translational folding (CTF) facilitates correct folding in vivo, but its precise mechanism remains elusive. For the CTF of a three-domain protein SufI, it was reported that the translational attenuation is obligatory to acquire the functional state. Here, to gain structural insights on the underlying mechanisms, we performed comparative molecular simulations of SufI that mimic CTF as well as refolding schemes. A CTF scheme that relied on a codon-based prediction of translational rates exhibited folding probability markedly higher than that by the refolding scheme. When the CTF schedule is speeded up, the success rate dropped. These agree with experiments. Structural investigation clarified that misfolding of the middle domain was much more frequent in the refolding scheme than that in t

SUBMITTER: Tanaka T 

PROVIDER: S-EPMC4497635 | biostudies-literature | 2015 Jul

REPOSITORIES: biostudies-literature