Look at this undecapeptide: Arg Asp Cys Glu Leu Lys Met Phe NH4+. What would each...

Look at this undecapeptide: Arg Asp Cys Glu Leu Lys Met Phe NH4+. What would each step do to the udecapeptide? Draw the final structure.

a. treatement with iodoacetate that had no affect on the undecapeptide.

b. treatment with 2 x 2-mercaptoethanol yielding a tripe-tide and octapeptide.

c. treatment with carboxypeptidase A liberated leucine.

d. treatment with cyanogen bromide yielding a methionine, a tripeptide and a heptapeptide.

The question states that these amino acids are only some components of the undecapeptide structure and that some amino acids within this structure may be repeated. The point is to determine the correct structure following several treatments. After these treatments, what conclusions can you make about the structure of the undecapeptide? What might the structure be?

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Expert Solution

gladiator answered 1 year ago

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