Unformatted text preview: Huxford~Spring 2008 Chem 365
Molecular & Cell Biology
Practice problem set 6 1) From VVP, Chapter 6 Problems 4,7,].0, and 12 2) (20 points) Use the structure of Molecule A, depicted below, to answer the
following questions. H0 Molecule A 0 A) Which of the following best describes the molecule shown above?
iv. Octapeptide B) Give the names, three letter codes, and single letter codes of the amino
acids that are covalently linked to form molecule A. Tyrosme, Tyr, V M Gila famine, Mn, (.2
C) Circle the peptide bond(s) in molecule A. I/ D) Draw squares around each of the atoms that lie in the same plane as the
peptide bond(s) (Hint: there should be six atoms). l/ E) Assign stereoehemisn'y (D or L) below each of the chiral carbons in molecule A.
L, L F) Calculate the isoelectric point (131) for molecule A. Pi = 1:?- =53
Cams“! ° L ‘( ”2' Hf—aH—ﬂ
pH 2. ‘7 ”3‘5 ...
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- Spring '08