tRNA and free amino acid levels are associated with CSC values based on underlying amino acid effects.

Summary of outputs for linear models of HeLa CSC using indicated variables (formula: CSC ~ HeLa tAI + free amino acid concentration). Codons encoding Cys and Glu were excluded based on NA or extreme outlier status from intracellular amino acid determinations. β estimates denote predicted effect on CSC with a linear increase of the indicated variable. 95% CI = confidence interval for β estimates.