After translation , the peptide must be proteolyticly excised , cyclized , hydroxylated , Trp - Cys cross-linked to form tryptathionine .
After translation , the peptide must be proteolyticly excised , cyclized , hydroxylated , Trp - Cys epimerized to form a D - Thr .
After translation , the peptide must be proteolyticly excised , cyclized , hydroxylated , Trp - Cys cross-linked to form tryptathionine , and epimerized to form a D - Thr .