The amino acid sequence shown below represents a portion of a peptide obtained from a large protein.
1 2 3 4 5 6 7 8 9 10 11 12
His Ile Thr Arg Phe Phe Pro Cys Met Gly Glu Ala
13 14 15 16 17 18 19 20 21 22 23 24
Ile Pro His Thr Glu Asp Cys Gln Met Ile His Cys
25 26 27 28 29 30
Pro Arg Lys Gln Pro Tyr