Question

Tryptic digest of a heptapeptide (built from 3 lysine (K). 2 alanine (A), 1 tyrosine (Y) and 1
phenylalanine (F)) yielded tri and tetrapeptide. Which of the following is the correct sequence of the
heptapeptide?
1.KYKAAKF
2.KYAAKFK
3.KAYAKFK
4.YKAAFKK​

Answer 1

Answer:

Tryptic digest of a heptapeptide (built from 3 lysine (K). 2 alanine (A), 1 tyrosine (Y) and 1

phenylalanine (F)) yielded tri and tetrapeptide. Which of the following is the correct sequence of the

heptapeptide?

1.KYKAAKF

2.KYAAKFK

3.KAYAKFK

4.YKAAFKK

Answer 2

Answer:

3

Explanation:

trypsin cut the lysine and arginine

and trypsin cut on the endopeptidase site

according to question trypsin digest heptapeptide tri and tetrapeptide so option 3 is correct answer