triiodinated residue 377.68994140625 377.69000244140625 A protein modification that effectively substitutes three hydrogen atoms of a residue with three iodine atoms. From Unimod. In PubMed:2026710, mono- and diiodination of tyrosine are discussed, but triiodination of tyrosine is not mentioned. In PubMed:15627961, triiodothyronine (see MOD:00186) is discussed, but triiodotyrosine is not mentioned. This modification probably does not exist, and may be a confusion of "tyrosine" for "thyronine", a common error [JSG]. H -3 I 3 I3Res MOD:00502 PSI-MOD Triiodo Unimod:131 X artifact tri-Iodination triiodinationy iodinated residue