Draw an α-helix, and ẞ-pleated sheets parallel and antiparallel for: Lys-Val-Phe-Tyr

To visualize the secondary structures of the given peptide sequence (Lys-Val-Phe-Tyr), you can draw…

Answered: Draw an α-helix, and ẞ-pleated sheets…

General, Organic, and Biological Chemistry

7th Edition

ISBN:9781285853918

Author:H. Stephen Stoker

Publisher:H. Stephen Stoker

Chapter20: Proteins

Section: Chapter Questions

Problem 20.117EP

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Similar questions

22-97 Gelatin is derived from collagen by denaturation. Is a gelatin dessert likely to be a good source of dietary protein?
For the tripeptide GlyAlaCys a. What amino acid is located at the peptides N-terminal end? b. What amino acid is located at the peptides C-terminal end? c. How many peptide bonds are present? d. How many amide linkages are present?
22-50 Is a random coil a (a) primary, (b) secondary, (c) tertiary or (d) quaternary structure? Explain.
22-85 Denaturation is usually associated with transitions from helical structures to random coils. If an imaginary process were to transform the keratin in your hair from an (-helix to a (-pleated sheet structure, would you call the process denaturation? Explain.
22-42 (a) How many atoms of the peptide bond lie in the same plane? (b) Which atoms are they?
What special role does the amino acid cysteine have in the peptides vasopressin and oxytocin?
22-104 Why is collagen not a very good source of dietary protein?
For the tripeptide SerArgIle which amino acid residues a. are hydrophilic b. are hydrophobic c. possess polar neutral R groups d. participate in two amide linkages
22-89 What kind of noncovalent interaction occurs between the following amino acids? (a) Valine and isoleucine (b) Glutamic acid and lysine (c) Tyrosine and threonine (d) Alanine and alanine
Draw the structure of cyclic adenosine monophosphate (cAMP), a messenger involved in the regulation of glucose production in the body. Cyclic AMP has a phosphate ring connecting the 39- and 59-hydroxyl groups on adenosine.
There are six isomeric tripeptides that contain valine, tyrosine, and glycine. Name them using both three- and one-letter abbreviations.
21-90 To what extent do lipids and carbohydrates play structural roles in living organisms? Do these roles differ in plants and in animals?

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Draw an α-helix, and ẞ-pleated sheets parallel and antiparallel for: Lys- Val-Phe-Tyr