please help! I'm just starting peptides this week, so I'm really lost.
Question 1. Consider the small peptide Pro-Cys-Arg-Gln
(a) Draw the entire peptide (careful of peptide bonds!), with charges you would expect on it at pH 7.4. Hint: how many ionizable groups on this peptide?
(b) Tabulate the charge on the molecule at every pH between 1 and 13
(c) Calculate the pI for the peptide.
What is the overall charge on the peptide at pH 1? pH 7.4? pH 13?
Do you expect this peptide to absorb at 280 nm? Why or why not?
Will this peptide form covalent bonds to other peptides in aqueous solution?
(g) Mark all the chiral centers in the molecule. How many are there?
please help! I'm just starting peptides this week, so I'm really lost. Question 1. Consider the...
e. 18 Test Your Knowledge MULTIPLE CHOICE: Choose the one best answer. 1. Each element has its own characteristic atom in which a. the atomic mass is constant. b. the atomic number is constant. c. the mass number is constant. d. Two of the above are correct. e. All of the above are correct. 2. Which of the following is not a trace element in the human body? a. iodine b. zinc c. iron d. calcium e. fluorine 3. A...