Homework Problems #2 1. Draw the peptide KTQHV, write the sequence using 3-letter abbreviation for the amino acids, and identify: a. The N- and C-termini. b. Every a-carbon of the sequence, by labeling them with "a". c. All peptide bonds. d. Hydrogen bond donors and acceptors in the polar side chains. e. Covalent bonds that correspond to the backbone phi (D) and psi (4) angles f. Ionizable R-groups of amino acids in this sequence (circle them). i. Choose one ionizable group and draw it at pH 1, pH 7, and pH 14 and indicate the approximate net charge at each pH. ii. What fraction of His residues are charged at pH=5.8?
Homework Problems #2 1. Draw the peptide KTQHV, write the sequence using 3-letter abbreviation for the amino acids, and identify: a. The N- and C-termini. b. Every a-carbon of the sequence, by labeling them with "a". c. All peptide bonds. d. Hydrogen bond donors and acceptors in the polar side chains. e. Covalent bonds that correspond to the backbone phi (D) and psi (4) angles f. Ionizable R-groups of amino acids in this sequence (circle them). i. Choose one ionizable group and draw it at pH 1, pH 7, and pH 14 and indicate the approximate net charge at each pH. ii. What fraction of His residues are charged at pH=5.8?
Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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Please help me draw and solve question 1. I need help understanding the structures.
Transcribed Image Text:Homework Problems #2
1. Draw the peptide KTQHV, write the sequence using 3-letter abbreviation for the amino acids, and identify:
a. The N- and C-termini.
b. Every a-carbon of the sequence, by labeling them with "a".
c. All peptide bonds.
d. Hydrogen bond donors and acceptors in the polar side chains.
e. Covalent bonds that correspond to the backbone phi (D) and psi (4) angles
f. Ionizable R-groups of amino acids in this sequence (circle them).
i. Choose one ionizable group and draw it at pH 1, pH 7, and pH 14 and indicate the
approximate net charge at each pH.
ii. What fraction of His residues are charged at pH=5.8?
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