... Research. Journal compilation ª 2010 FEBS 2095 Role of the C-terminal extension in a bacterial tyrosinase Michael Fairhead and Linda Tho¨ny-MeyerEMPA, Swiss Federal Laboratories for Materials ... the presence of such a bond in N. crassa tyrosinase [15] and in molluscan haemocyanins [28]. The arrangement of a core tyrosinase domainfollowed by a C-terminal extension (Fig. 1B) is similar in ... acids1–36), we retained amino acid 36, an alanine, ratherthan using amino acid 37, a lysine, because it isknown that, after a post-translational processing of the N-terminal methionine, which often occurs...