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 ?.
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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 ?.
Amino acids are biomolecules that are comprised of two functional groups, these are an amino group (-NH2) and a carboxyl group (-COOH). Amino acids when combined with a peptide bond, they form proteins. Proteins are macromolecules made up of L-amino acids. They are presently more than any other major macromolecules and perform various types of functions.
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- Consider the following peptide: Lys-His-Asp-Glu-Phe-Cys-Ala-Asp-His-Arg What is the net charge of this peptide at pH = 1? What is the net charge of this peptide at pH = 14?Draw Glu-His-Trp-Ser-Gly-Leu-Arg-Pro-Gly peptide. What is the net charge of this peptide at pH 3, 8 and 11? What can you say about pI value of this peptide?At what pH does peptide the His-Arg have a net charge of +1.7?
- For the peptide Ala-Cys-His-Ile-Leu-Asp a. Write the single letter code for the amino acid residues b. What is the charge of the peptide at pH 7.0. Assign the following pKa values: 3,4,6,8,9 c. What is the pI of the peptideGiven the following Peptide: Q6 *H;N-Phe-Asp-Ala-Arg-Gy-His-Arg-Asp-Glu-His-Tyr-CO 6a. What is the peptide's net charge at pH 2.0, pH 6.0, pH 7.4, and pH 10.2? (show work) 6b. What is the approximate isoelectric point of this peptide?Asp-Gly-Lys-Glu-Ile-Phe Draw its full chemical structure as it would exist at pH = 7.0. Draw an arrow pointing to each peptide bond. Identify the net charge of the peptide and briefly explain how you arrived at this answer.
- Thr-Lys-Pro-Ile-Val-Ala-Pro-Met-Glu-Tyr-Gly-Lys Write the sequence using one-letter abbreviations. sequence: TLPIVAPMGYGK Incorrect Estimate the net charge on the peptide at pH 7. charge at pH 7: +1 Estimate the net charge on the peptide at pH 12. charge at pH 12: 0 IncorrectPorcine dynorphin is a neuropeptide having 17 amino acid residues. Its structure is shown below. Tyr-Gly-Gly-Phe-Leu-Arg-Arg-Ile-Arg-Pro-Lys-Leu-Lys-Trp-Asp-Asn-Gln 8. How does trypsin catalyze the hydrolysis of peptides? You can answer this question by identifying the amino acids involved and whether the hydrolysis is at their amino side or the carboxyl side or if particular amino acids end up at the N-teminal end or at the C-terminal end. 9. List down the different fragments that would result if dynorphin were cleaved by trypsin. 10. How does chymotrypsin catalyze the hydrolysis of peptides? You can answer this question by identifying the amino acids involved and whether the hydrolysis is at their amino side or the carboxyl side or if particular amino acids end up at the N-teminal end or at the C- terminal end. 11. List down the different fragments that would result if dynorphin were cleaved by chymotrypsin. 12. Cyanogen bromide is a chemical reagent which also cleaves peptide bonds.…A peptide with the primary structure Lys-Arg-Pro-Leu-Ile-Asp-Gly-Ala must be synthesized by the methods developed by Merrifield. Calculate the percentage of the peptides synthesized that will be full length and have the correct sequence if the addition of each amino acid residue is 96% efficient. Do the calculation a second time but assume a 99% efficiency for each cycle. full-length peptides with the correct sequence if 96% efficient: full-length peptides with the correct sequence if 99% efficient: % %
- Draw the polypeptide T-R-I-P at pH of 7. Label each residue with the 3-letter code, label the N- and C-termini. What is the isoelectric point of this peptide?what would the net charge on the tetra peptide of sequence ala-lys-glu-ser at ph 7.2 what would it be if the amino group of the Lys residue has been acetylated?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