Bio-Chemistry (M.Phil./Ph.D.) 2014 Panjab University Entrance Exam With Answers

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13.

A polypetide 10 amino acids long is split into various smaller fragments, and the amino acid sequences of some of the fragments are determined. The identified fragments include : ala-gly-ser-gin, lys-trp-arg-pro, gln-his-lys, asp-ala-gly. What is the primary sequence of the polypeptide ?

A: Ala-gly-ser-gln-lys-trp-arg-pro-gln-his
B: asp-ala-gly-ser-gin-his-lys-trp-arg-pro
C: ala-gly-ser-gin-his-lys-trp-arg-pro-asp
D: lys-trp-arg-pro-gln-his-lys-asp ala-gly

The answer is: B