Research Article

Peroxidase as the Major Protein Constituent in Areca Nut and Identification of Its Natural Substrates

Figure 2

Identification of peroxidase as the major protein component. (a) and (b) MS/MS analysis of two tryptic peptides with the sequences at the top of each panel. (c) Sequence alignment of two tryptic peptides with the N-terminal 120 residues of RPT peroxidase. The sequence identity is underlined, and the numbers on the left indicate the residue numbering of RPT peroxidase. (d) Spectrophotometric assay of peroxidase activity for the purified protein.
(a) ā€‰