Consider the following two peptides:I. N-Pro-Pro - Glu - Glu - Tyr - His - Cys - Ala - Glu - Gln - Lys - Leu - Ser - Ser - Phe-Leu-Thr - CII. N-Pro-Pro - Lys - Arg - Gly - Tyr - His - Gly - Glu - Asp - Glu - Asp - Glu - Ser - Gly-Phe-Tyr-CGive three reasons why_peptide I is more likely to form an alpha helix in aqueous solution atpH 7.0. Your reasons may include why_peptide Il is less likely to form an alpha helix

Peptide I is more likely to form an alpha helix in aqueous solution at pH 7.0 compared to peptide II…

Answered: Consider the following two peptides: I.…

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

Problem 1P

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Amino sequence: Gln-Glu-Val-Leu-Ile-Arg-Leu-Phe-Lys-Gly-His-Pro-Glu-Thr-Leu-Glu-Lys-Phe-Asp-Lys-Phe-Lys-His-Leu-Lys-Ser-Glu-Asp-Glu-Met-Lys-Ala-Ser-Glu-Asp-Leu-Lys A) List the fragments generated with trypsin: B) List the fragments generated with chymotrypsin (5 pts) (assume reaction conditions are used to maximize cutting to the C-terminal size of only the 3 aromatic amino acids.)
c=0 OH CH2 H CH2 H CH, H. H-Nt CH' CH N. CH CH CH' H CH CH3 H CH H CH2 CH, CH, CH2 CH2 CH3 CH2 CH2 * NH3
Subjecting this peptide to trypsin would result in L-M-F-V-W-E-Q-A-P-S-P O A. Lys and Met-Phe-Val-Trp-Glu-Gln-Arg and Pro-Ser-Pro OB, Leu-Met-Phe-Val-Trp-Glu-Gin-Ala-Pro-Ser-Pro Leu and Met-Phe-Val-Trp-Glu-Gln-Arg-Pro-Ser-Pro OC. Op. Lys and Met-Phe-Val-Trp-Glu-Gln-Ala-Pro-Ser-Pro Leu and Met-Phe-Val-Trp-Glu-Gin-Arg-Pro-Ser-Pro OE.
Translate the following amino acid sequence into one-letter code: Glu-Leu-Val-Ile-Ser-IleSer-Leu-IleVal-Ile-Asn-Gly-Ile-Asn-Leu-Ala-SerValGlu-Gly-Ala-Ser
The primary structure of b-endorphin, a peptide containing 31 amino acids synthesized by the body to control pain, is shown here: Tyr-Gly-Gly-Phe-Met-Thr-Ser-Glu-Lys-Ser-Gln-Thr-Pro-Leu-Val-Thr- Leu-Phe-Lys-Asn-Ala-Ile-Ile-Lys-Asn-Ala-Tyr-Lys-Lys-Gly-Glu What fragments are obtained as a result of treatment with trypsin?
The primary structure of b-endorphin, a peptide containing 31 amino acids synthesized by the body to control pain, is shown here: Tyr-Gly-Gly-Phe-Met-Thr-Ser-Glu-Lys-Ser-Gln-Thr-Pro-Leu-Val-Thr- Leu-Phe-Lys-Asn-Ala-Ile-Ile-Lys-Asn-Ala-Tyr-Lys-Lys-Gly-Glu What fragments are obtained as a result of treatment withcyanogen bromide?
Reveal the secret message by writing the amino acid sequence into one-letter code: Leu- Glu-Ala-Arg-Asn-Ile-Asn-Gly-Cys-His-Glu-Met-Ile-Ser-Thr-Arg-Tyr-Ile-Ser-Gly-Arg-Glu- Ala-Thr.
The melanocyte-stimulating hormone a-melanotropin has the following sequence: Ser-Tyr-Ser-Met-Glu-His-Phe-Arg-Trp-Gly-Lys-Pro-Val In the one-letter code of amino acids, this sequence would be: SYSMEHFRWGKPV STSMGHFAWGKPV O SYSMDHFAWGKPV O SYSMEHFAWGLPV
Draw the structure of this peptide: N-Met-His-Tyr-Leu-Asp-Ser-Arg-Leu-C
After the polypeptide shown below was treated with maleic anhydride, it was hydrolyzed by trypsin. (After a polypeptide is treated with maleic anhydride, trypsin will cleave the polypeptide only on the C-side of arginine.) Gly-Ala-Asp-Ala-Leu-Pro-Gly-Ile-Leu-Val-Arg-Asp-Val-Gly-Lys-Val-Glu-Val-Phe-Glu-Ala-Gly-Arg-Ala-Glu-Phe-Lys-Glu-Pro-Arg-Leu-Val-Met-Lys-Val-Glu-Gly-Arg-Pro-Val-Gly-Ala-Gly-Leu-Trp In what order will the fragments be eluted from an anion-exchange column using a buffer of pH = 5?
Amino Acid: Asn-Met-Ser-Ile-Phe-Arg-Cys-Tyr-Lys What is the one letter code of this amino acid and what is its classification? What is the side chain description (e.g. amide, aromatic etc.)
Provide the correct three-letter abbreviation for the following amino acid: Gln ← H₂N-CH-C-C 1 CH3 Ala Arg Asn Asp Cys Glu Gly His lle Leu Lys 包

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