The fitness landscapes of translation

Mario Josupeit and Joachim Krug

Physica A: Statistical Mechanics and its Applications, 2021, vol. 569, issue C

Abstract: Motivated by recent experiments on an antibiotic resistance gene, we investigate genetic interactions between synonymous mutations in the framework of exclusion models of translation. We show that the range of possible interactions is markedly different depending on whether translation efficiency is assumed to be proportional to ribosome current or ribosome speed. In the first case every mutational effect has a definite sign that is independent of genetic background, whereas in the second case the effect-sign can vary depending on the presence of other mutations. The latter result is demonstrated using configurations of multiple translational bottlenecks induced by slow codons.

Keywords: Translation; Fitness landscape; Synonymous mutations; Exclusion process (search for similar items in EconPapers)
Date: 2021
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Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:569:y:2021:i:c:s0378437121000406

DOI: 10.1016/j.physa.2021.125768

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