QuestionWhat is the net charge for the following peptide atpH = 1?Ser-Trp-Arg-Gln-Glu-His-Lys-Asp

The given peptide is-Ser- Trp-Arg- Gln-Glu-His-Lys-AspTo find the net charge of the peptide at pH 1,…

Answered: What is the net charge for the…

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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You have digested a small protein with two different proteases, each protease acting on the protein in separate reactions. These are the peptide fragments generated: Trypsin: IPVK: Ile-Pro-Val-Lys ALEL: Ala-Leu-Glu-Leu HRPGDR: His-Arg-Pro-Gly-Asp-Arg FGADAEDGAMNK: Phe-Gly-Ala-Asp-Ala-Glu-Asp-Gly-Ala-Met-Asn-Lys YLEFISECIIQVLQSK: Tyr-Leu-Glu-Phe-Ile-Ser-Glu-Cys-Ile-Ile-Gln-Val-Leu-Gln-Ser-Lys Chymotrypsin: (Reaction conditions were used to maximize cutting to the C-terminal size of F, W, and Y.) LEF: Leu-Glu-Phe IPVKY: Ile-Pro-Val-Lys-Tyr GADAEDGAMNKALEL: Gly-Ala-Asp-Ala-Glu-Asp-Gly-Ala-Met-Asn-Lys-Ala-Leu-Glu-Leu ISECIIQVLQSKHRPGDRF: Ile-Ser-Glu-Cys-Ile-Ile-Gln-Val-Leu-Gln-Ser-Lys-His-Arg-Pro-Gly-Asp-Arg-Phe I am not sure what these questions are asking.
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
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
Consider the peptide Trp-Arg-Glu-Cys-Gly-Tyr. For the drawings requested below, please show them in zig-zag style, from amino to carboxy terminus, with correct stereochemistry Draw the predominant form at pH = 2 Draw the predominant form at pH = 5 Draw the predominant form at pH = 7 Draw the predominant form at pH = 12
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?
you have the following peptide Arg-Ile-Pro-Leu-Asp-Lys-Glu The net charge on this peptide at pH 7.0 is ?. The net charge on this peptide at 1M HCl is ?.
Consider a short peptide with the sequence M-C-Q-L-Y-P-E-D-K. List the ionizable groups in this peptide, and the net charge of the whole peptide at pH a) 1.5, b) 7.0, and c)12.0.
the overall, net ionic charge on this peptide at pH = 7 would be: Cys - Ala - Glu-Arg - Met - Ser
A peptide containing 18 amino acid residues in its sequence was partially hydrolyzed and peptides A–D were detected in the resulting mixture. Draw the sequence of the original peptide.A Phe-Gly-AlaB Ser-Ser-Ser-Trp-Phe-Gly-AlaC Phe-Phe-Met-Ala-Ala-Pro-Trp-CysD Met-Ala-Ala-Pro-Trp-Cys-Leu-Ile-Leu-Ser-Ser
identify the interaction that may be produced between the side chain of amino acid residues found at the N-terminus and the C-terminus of the peptide. List all possible peptides that can be formed from the given peptide (use three character/letter abbreviations for each amino acid, i.e., Ala-Gly-Val). NOTE: Any excess will be deducted to the correct answers. Be careful in evaluating your answers.
Which of the following amino acids would you least expect to find on the surface of a water-soluble protein? Explain I Serine Glutamat Lysime Threonine

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What is the net charge for the following peptide at pH = 1? Ser-Trp-Arg-Gln-Glu-His-Lys-Asp