a) Draw the structure of a Gln-Lys-Met tripeptide at pH 7. b) Calculate the pl of...
Draw the structure of a tripeptide Gln-Ile-Asp with the correct ionization at pH 7.
Draw the Lewis structure of the pentapeptide Met-Glu-Leu-His-Lys as it will exist at the following pH's РH 2.5 a. b. рH 7.0 pH 10.0 с. d. What is the isoelectric point for this peptide? Draw the Lewis structure of the pentapeptide Met-Glu-Leu-His-Lys as it will exist at the following pH's РH 2.5 a. b. рH 7.0 pH 10.0 с. d. What is the isoelectric point for this peptide?
1. Draw the structure of the following tripeptide as it would exist at physiological pH. Be sure to indicate any positive or negatively charged groups in the tripeptide. lle-Lys-Tyr
Draw the tripeptide gly-lys-glu as it exists under physiological pH. Write the reaction for the hydrolysis of this tripeptide into the individual amino acids. Be sure to show the reaction conditions and the final products that result under these conditions.
Predict the charge on the major species of the peptide Ile–Arg–Asp–Ala–Lys–Ser–Gln at pH 7.0
Draw the structure of the dipeptide Lys-Glu at pH 7.0. Label the following: a) Peptide bond b) N-terminus c) C-terminus d) An α-amino group and an ε-amino group e) An α-carboxylate group and a Y-carboxylate group Draw the structure of the dipeptide Lys-Glu at pH 7.0. Label the following: (a). peptide bond, (b). N-terminus, (c). C-terminus, (d). an a-amino group and an e-amino group, (e), an α-carboxylate group and a -carboxylate group.
Predict the charge on the major species of the peptide Ile-Lys-Asp-Arg-Ser-Gln at pH 7.0 Please explain if you can. Thanks
Styles A decapeptide has the following amina acid composition: Arg. Asp, Gly, Leu, Lys, Met, Phe, Ser. Trp, and Val Reacting the native peptide with FDNB and then hydrolyzing released 2.4- dinitrophenylvaline. Brief incubation of the native peptide with carboxypeptidase yielded free Leu. Incubation with cyanogen bromide yielded two fragments: a tetrapeptide with composition Met, Phe, Ser, and Val, and a hexapeptide. The hexapeptide yielded 2.4- dinitrophenylglycine. Proteolytic cleavage by trypsin of the native peptide gave free Leu, a tripeptide,...
If the sequence Met-Lys-Glu-Ala-Phe-Leu-Gln is folded into an α-helix, the amino acid whose carbonyl group interacts with the amide hydrogen of Gln would be: A. Glu B. Ala C. Phe D. Leu E. Lys The answer is A. can you explain the answer
5. Consider the following peptide: His-Ser-Gln-Gly-Thr-Phe-Thr-Ser-Asp-Tyr-Ser-Lys-Tyr-Leu-Asp-Ser-Arg-Arg-Ala-Gin- Asp-Phe-Val-Gln-Trp-Leu-Met-Asn-Thr a. What are the fragments, if it is cleaved by trypsin? b. What are the fragments, if it is cleaved by chymotrypsin? c. What are the fragments, if it is cleaved by pepsin?