Downstream processing of an industrial process yielded a highly purified bioactive protein. This protein was subjected to cleavage by trypsin. Chromatographic separation of products resulted in 4 peptides (P, Q, R, S) with the following amino acid sequencesP. phe-val-met-val-arg Q. ala-ala-try-gly-lys R. val-phe-met-ala-gly-lys S. phe-gly-try-ser-thr Chemical cleavage of the same protein with cyanogenbromide and chromatographic separation resulted in three peptides (i, ii, iii) with the following sequences (i) ala-gly-lys-phe-gly-try-ser-thr (ii) ala-ala-pry-gly-lys-phe-val-met (iii) val-arg-val-phe-met The order of the peptides that gives the primary structure of the original protein is

Downstream processing of an industrial process yielded a highly purifi

1.	Downstream processing of an industrial process yielded a highly purified bioactive protein. This protein was subjected to cleavage by trypsin. Chromatographic separation of products resulted in 4 peptides (P, Q, R, S) with the following amino acid sequencesP. phe-val-met-val-arg Q. ala-ala-try-gly-lys R. val-phe-met-ala-gly-lys S. phe-gly-try-ser-thr Chemical cleavage of the same protein with cyanogenbromide and chromatographic separation resulted in three peptides (i, ii, iii) with the following sequences (i) ala-gly-lys-phe-gly-try-ser-thr (ii) ala-ala-pry-gly-lys-phe-val-met (iii) val-arg-val-phe-met The order of the peptides that gives the primary structure of the original protein is
A.	P, Q, R, S
B.	Q, P, R, S
C.	Q, R, P, S
D.	R, Q, P, S
Answer» D. R, Q, P, S

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