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- What is the net charge at pH 7 on a peptide with the following sequence? Gly-Ala-Lys-Phe-Asp-Met-Val-Pro-Arg-Ala-LeuA peptide in a solution with a pH of 7 has the following sequence: K-R-E-D-H-D-E (Lys-Arg-Glu-Asp-His-Asp-Glu). To get to the pI, you would need elevate the pH.Consider the peptide L-E-T-S-P-R-A-Y Which amino acid(s) is/are basic? A. Y B. P C. R D. L E. T F. S C. A H. E
- The bacterially produced antibiotic gramicidin A forms channels in cell membranes that allow the free diff usion of Na+ and K+ ions, thereby killing the cell. This peptide consists of a sequence of Dand L-amino acids. The sequence of a segment of fi ve amino acids in gramicidin A is R-Gly-L-Ala-D-Leu-L-Ala-D-Val-R′. Complete the Fischer projection below by adding the correct group to each vertical bond.The peptide below contains how many amino acid residues?Consider the following peptide: Lys-Tyr-Glu-His-Arg-Ala-Asp-Arg-Glu-Tyr-Lys a) What is the net charge of this peptide at pH=1? Show your work. b) What is the net charge of this peptide at pH=14? Show your work.
- Despite being hydrophobic, why is methionine (Met) not located within a protein?A peptide in a solution with a pH of 7 has the following sequence: K-R-E-D-H-D-E (Lys-Arg-Glu-Asp-His-Asp-Glu). To get to the pI, you would need elevate the pH. True or FalseWrite the chemical structure of peptide containing the following amino acid PRO-SER-GLY-LEU
- Which peptide has a larger pI? Arg-Gly-Gly-Gly or Gly-Gly-Gly-Arg why?which two amino acid have two chiral center? I know Isoleucine contain two chiral center,how about another AA?In the following polypeptide, which amino acid would be participating in hydrogen bonding with alanine, given this sequence forms an alpha helix? Please write out the full amino acid name, not the abbreviation. Met-Ala-Leu-Glu-Lys-Thr-Leu-Val