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It reacts with Cys under the catalysis of cystathionine--synthetase to produce cystathionine, which is cleaved by cystathionine--lyase to form homocysteine

On the other hand, strenuous and/or damaging exercise elicits a stress response analogous to the acute-phase immune response

When considering the potential metabolic pathways that lead to hyperhomocysteinemia it is important to note that the amino acid methionine, but not the amino acid cysteine, is the dietary precursor of homocysteine (Stipanuk et al, cited in Xiao et al, 2013)

The prediction of the tertiary structure is significantly influenced by its secondary structure (72)