Fig. 2.

Amino acid sequence of GPXH proteolytic products.After separation by Tricine-SDS-PAGE (Fig. 1), four species of proteolytic products, Peptides 1–4, were transferred to a PVDF membrane and separately recovered for identification and selenium quantification. The numbers indicate the position of the amino acid residues relative to the N-terminal. Amino acid sequences experimentally determined are underlined.