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

Want to see the full answer?
Check out a sample textbook solution
Chapter 25 Solutions
ORGANIC CHEMISTRY (LL) >CUSTOM PACKAGE<
- Use the Henderson-Hasselbalch equation to calculate pH of a buffer containing 0.050M benzoic acidand 0.150M sodium benzoate. The Ka of benzoic acid is 6.5 x 10-5arrow_forwardA. Draw the structure of each of the following alcohols. Then draw and name the product you would expect to produce by the oxidation of each. a. 4-Methyl-2-heptanol b. 3,4-Dimethyl-1-pentanol c. 4-Ethyl-2-heptanol d. 5,7-Dichloro-3-heptanolarrow_forwardWhat is the pH of a 1.0 L buffer made with 0.300 mol of HF (Ka = 6.8 × 10⁻⁴) and 0.200 mol of NaF to which 0.160 mol of NaOH were added?arrow_forward
- Can I please get help with this.arrow_forwardDetermine if the following salt is neutral, acidic or basic. If acidic or basic, write the appropriate equilibrium equation for the acid or base that exists when the salt is dissolved in aqueous solution. If neutral, simply write only NR. Be sure to include the proper phases for all species within the reaction. N₂H₅ClO₄arrow_forwardPlease help me with identifying these.arrow_forward
- ChemistryChemistryISBN:9781305957404Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCostePublisher:Cengage LearningChemistryChemistryISBN:9781259911156Author:Raymond Chang Dr., Jason Overby ProfessorPublisher:McGraw-Hill EducationPrinciples of Instrumental AnalysisChemistryISBN:9781305577213Author:Douglas A. Skoog, F. James Holler, Stanley R. CrouchPublisher:Cengage Learning
- Organic ChemistryChemistryISBN:9780078021558Author:Janice Gorzynski Smith Dr.Publisher:McGraw-Hill EducationChemistry: Principles and ReactionsChemistryISBN:9781305079373Author:William L. Masterton, Cecile N. HurleyPublisher:Cengage LearningElementary Principles of Chemical Processes, Bind...ChemistryISBN:9781118431221Author:Richard M. Felder, Ronald W. Rousseau, Lisa G. BullardPublisher:WILEY





