Probing the Function of the Tyr‐Cys Cross‐Link in Metalloenzymes by the Genetic Incorporation of 3‐Methylthiotyrosine

Efficient multiple-electron redox reactions are performed by galactoase oxidase, cysteine dioxygenase, sulfite reductase, and cytochrome c nitrite reductase. A post-translationally modified tyrosine–cysteine cross-link (Tyr-Cys) in their active sites is essential for their functions. Detailed facts of importance to specialist readers are published as "Supporting Information". Such documents are peer-reviewed, but not copy-edited or typeset. They are made available as submitted by the authors. Please note: The publisher is not responsible for the content or functionality of any supporting information supplied by the authors. Any queries (other than missing content) should be directed to the corresponding author for the article.