label: 2 [thyroglobulin]-3,5-diiodo-L-tyrosine + H2O2 <=> [thyroglobulin]-L-thyroxine + [thyroglobulin]-dehydroalanine + 2 H2O
label_lc: 2 [thyroglobulin]-3,5-diiodo-l-tyrosine + h2o2 <=> [thyroglobulin]-l-thyroxine + [thyroglobulin]-dehydroalanine + 2 h2o