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​Please research these questions and then write your own answers to them, incorporating the information you learned.  

   Submit your responses to the questions below
on Canvas via the assignments tab:
​lecture supplemental question 3.
This assignment is available until
​ the start of our fifth lecture class 8/31 at 9:30am. 

                                                                    PKU and phenyalanine
​                             Many diet sodas contain an artificial sweetener called aspartame
                   Aspartame consists of two amino acids—aspartic acid and phenylalanine. 

1. a. Which R group is exhibited by aspartic acid?
    b. What characteristics would this R group confer to this amino acid?
    c. Due to these characteristics, how would you expect this amino acid to interact with other amino acids
         in a polypeptide?

2. a. Which R group is exhibited by phenylalanine?
     b. What characteristics would this R group confer to this amino acid?
     c. Due to these characteristics, how would you expect this amino acid to interact with other
         amino acids in a polypeptide chain?

3. Individuals with a condition called PKU (phenylketonuria) don't produce sufficient amounts of
    phenylalanine hydroxylase (PAH). 
    a. 
What type of molecule is phenylalanine hydroxylase?
    b. What products are produced by this molecule's actions.
    c. What is the formula for the reaction facilitated by this molecule?
    d. Does this molecule function in an anabolic or catabolic reaction?

Lecture Supplement #3

 logical, supported answers will be rewarded with up to 5 supplemental points added to your first lecture assessment.    

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