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VII. Analysis of a peptide antibiotic purified from a strain of Bacillus brevii resulted in the following significant information: Complete hydrolysis of the peptide yielded equimolar amounts of Leu, Orn, Phe, Pro, and Val Molecular weight of the peptide was estimated to be aroung 1,200 Da The peptide failed to undergo hydrolysis when treated with carboxypeptidase Partial hydrolysis and then chromatographic separation of products yielded the following di- and tripeptides: Leu-Phe, Phe-Pro, Orn-Leu, Val-Orn, Val-Orn-Leu, Phe-Pro-Val, Pro-Val-Orn Treament with dinitrofluorobenzene (DNFB) followed by complete hydrolysis yielded only free amino acids and the DNFB-derivatized ornithine at its side chain Using this set of information available to you, deduce the amino acid sequence of this peptide antibiotic. Write your final peptide sequence only using 3-letter abbreviations. /

VII. Analysis of a peptide antibiotic purified from a strain of Bacillus brevii resulted in the following significant information: Complete hydrolysis of the peptide yielded equimolar amounts of Leu, Orn, Phe, Pro, and Val Molecular weight of the peptide was estimated to be aroung 1,200 Da The peptide failed to undergo hydrolysis when treated with carboxypeptidase Partial hydrolysis and then chromatographic separation of products yielded the following di- and tripeptides: Leu-Phe, Phe-Pro, Orn-Leu, Val-Orn, Val-Orn-Leu, Phe-Pro-Val, Pro-Val-Orn Treament with dinitrofluorobenzene (DNFB) followed by complete hydrolysis yielded only free amino acids and the DNFB-derivatized ornithine at its side chain Using this set of information available to you, deduce the amino acid sequence of this peptide antibiotic. Write your final peptide sequence only using 3-letter abbreviations. /

Biochemistry
Biochemistry
9th Edition
ISBN:9781319114671
Author:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.
Publisher:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.
Chapter1: Biochemistry: An Evolving Science
Section: Chapter Questions
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VII. Analysis of a peptide antibiotic purified from a strain of Bacillus brevii resulted in the following significant information: Complete hydrolysis of the peptide yielded equimolar amounts of Leu, Orn, Phe, Pro, and Val Molecular weight of the peptide was estimated to be aroung 1,200 Da The peptide failed to undergo hydrolysis when treated with carboxypeptidase Partial hydrolysis and then chromatographic separation of products yielded the following di- and tripeptides: Leu-Phe, Phe-Pro, Orn-Leu, Val-Orn, Val-Orn-Leu, Phe-Pro-Val, Pro-Val-Orn Treament with dinitrofluorobenzene (DNFB) followed by complete hydrolysis yielded only free amino acids and the DNFB-derivatized ornithine at its side chain Using this set of information available to you, deduce the amino acid sequence of this peptide antibiotic. Write your final peptide sequence only using 3-letter abbreviations. /
Transcribed Image Text:VII. Analysis of a peptide antibiotic purified from a strain of Bacillus brevii resulted in the following significant information: Complete hydrolysis of the peptide yielded equimolar amounts of Leu, Orn, Phe, Pro, and Val Molecular weight of the peptide was estimated to be aroung 1,200 Da The peptide failed to undergo hydrolysis when treated with carboxypeptidase Partial hydrolysis and then chromatographic separation of products yielded the following di- and tripeptides: Leu-Phe, Phe-Pro, Orn-Leu, Val-Orn, Val-Orn-Leu, Phe-Pro-Val, Pro-Val-Orn Treament with dinitrofluorobenzene (DNFB) followed by complete hydrolysis yielded only free amino acids and the DNFB-derivatized ornithine at its side chain Using this set of information available to you, deduce the amino acid sequence of this peptide antibiotic. Write your final peptide sequence only using 3-letter abbreviations. /
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