There is a hexapeptide, and its primary structure is written down according to the following experimental results, and the analysis process is briefly written down: (1) DNP-Ala was obtained by DNFB reaction; (2) DNP-Ile was obtained by reaction with DNFB after hydrazine hydrolysis; (3) Two tripeptides were obtained by reaction with cyanogen bromide, then DNP-Leu and DNP-Ala were obtained by reaction with DNFB; (4) Fragments containing 1, 2 and 3 amino acids were obtained by trypsin hydrolysis, and the Sakakuchi reaction of the last two fragments was positive.

Organic Chemistry
9th Edition
ISBN:9781305080485
Author:John E. McMurry
Publisher:John E. McMurry
Chapter26: Biomolecules: Amino Acids, Peptides, And Proteins
Section26.SE: Something Extra
Problem 57AP: Oxytocin, a nonapeptide hormone secreted by the pituitary gland, functions by stimulating uterine...
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There is a hexapeptide, and its primary structure is written down according to the following
experimental results, and the analysis process is briefly written down:
(1) DNP-Ala was obtained by DNFB reaction; (2) DNP-Ile was obtained by reaction with DNFB
after hydrazine hydrolysis; (3) Two tripeptides were obtained by reaction with cyanogen bromide,
then DNP-Leu and DNP-Ala were obtained by reaction with DNFB; (4) Fragments containing 1, 2
and 3 amino acids were obtained by trypsin hydrolysis, and the Sakakuchi reaction of the last two
fragments was positive.
Transcribed Image Text:There is a hexapeptide, and its primary structure is written down according to the following experimental results, and the analysis process is briefly written down: (1) DNP-Ala was obtained by DNFB reaction; (2) DNP-Ile was obtained by reaction with DNFB after hydrazine hydrolysis; (3) Two tripeptides were obtained by reaction with cyanogen bromide, then DNP-Leu and DNP-Ala were obtained by reaction with DNFB; (4) Fragments containing 1, 2 and 3 amino acids were obtained by trypsin hydrolysis, and the Sakakuchi reaction of the last two fragments was positive.
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