Aminoacyl-tRNA synthetase mutants degrade protein at a normal rate

Abstract
The stability of both rapidly and slowly degraded proteins in wild type CHO cells is similar to that in three ts aminoacyl‐tRNA synthetase mutants at both permissive and non‐permissive temperatures, although the degree of tRNA charging in the synthetase mutants differs considerably with temperature. These results indicate that the altered rate of protein breakdown seen under a variety of physiological conditions in eukaryotic systems is not mediated by uncharged tRNA.