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