ORGANIC CHEMISTRY-STUD.SOLNS.MAN+SG(LL)
ORGANIC CHEMISTRY-STUD.SOLNS.MAN+SG(LL)
4th Edition
ISBN: 9781119659587
Author: Klein
Publisher: WILEY
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Chapter 25.4, Problem 27CC
Interpretation Introduction

Interpretation:

Tetrapeptide obtained when two molecules of Cys-Phe are joined by a disulfide bridge need to be drawn.

Concept introduction:

Disulfide linkages are formed when two thiol molecules undergo oxidation.  In case of amino acids only cysteine has a thiol group in it.  Therefore cysteine can involve in disulfide bridge formation.  If the disulfide bridge is formed within the peptide a cyclic structure is obtained due to intermolecular oxidation of thiol.  If the disulfide bridge is formed between two molecules of thiol, then the disulfide is formed due to intramolecular oxidation of thiol.  The general scheme of forming disulfide linkages can be shown as,

ORGANIC CHEMISTRY-STUD.SOLNS.MAN+SG(LL), Chapter 25.4, Problem 27CC

To draw: the tetrapeptide formed when Cys-Phe is joined by disulfide bridge.

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(ME EX1) Prblm #9/10    Can you explain in detail (step by step) I'm so confused with these problems. For turmber 13 can u turn them into lewis dot structures so I can better understand because, and then as well explain the resonance structure part. Thanks for the help.
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Chapter 25 Solutions

ORGANIC CHEMISTRY-STUD.SOLNS.MAN+SG(LL)

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