Fig. 4
From: The significance of proline and glutamate on butanol chaotropic stress in Bacillus subtilis 168
Intracellular glutamate and proline in B. subtilis 168 challenged with salt or butanol in comparison to those in the non-stressed cell control (indicated as “None”). Content of intracellular glutamate (A) and proline (B) measured when cells were treated with each stressor for 1 h. Relative values of intracellular glutamate content (C) and intracellular proline content (D) determined at 1 and 6 h of cell exposure to each stressor. The italic letters indicate significance level (p < 0.05)