showed a trendP = 0.094
insF1- mdtB , sspA , stpA , and ykfC-proB ) significantly increased fitness of the corresponding mutants in the presence of AAs relative to the ancestral strain (independent sample t-test: P<0.05, Fig 6 ), while one mutant ( yhdW ) showed a trend in this direction (independent sample t-test: P = 0.094, n = 8, Fig 6 ).