“Enzyme assays revealed that the first step of the isoleucine biosynthetic pathway, catalyzed by threonine deaminase, was sensitive to inhibition by Hcy.”
“ Isoleucine could reverse the effects of Hcy on the cytoplasmic pools of valine and alanine.”
“The last intermediate of the isoleucine biosynthetic pathway, α-keto-β-methylvalerate , could also alleviate the growth inhibition caused by Hcy.”