2. For the following peptide determine the products of trypsin digest Ala-Glu-Lys-Phe-Val- Cys-Tyr-Met-Gly-Ph?
The trypsin digest of the peptide Ala-Glu-Lys-Phe-Val-Cys-Tyr-Met-Gly-Phe would yield the following fragments: Ala-Glu-Lys, Phe-Val-Cys-Tyr, Met-Gly, Phe. Trypsin cleaves at the C-terminus of lysine and arginine residues, so the peptide is cleaved at the Lys residue.