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Reaction of cysteine with PLP. A Scheme for the reaction of protein bound PLP with cysteine. B Thiazolidine formation from the reaction PLP with cysteine. C Changes in the absorbance of 50 µM PLP reacting with 50, 100, 150, 200, 250, 300, 350, and 400 µM cysteine. Each trace represents the mean of at least 7 scans. The mean ± SD (n) of these scans is presented in the Supplementary Table 2
