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posted by  The King Cobra on 11/3/2009 12:22:24 AM  |  status: Closed  |  Earned Karma: 35

plz, help needed. Will rate lifesaver. thank

Course Textbook Chapter Problem Needs by
N/A N/A N/A N/A 11/3/2009 at 3:00:00 PM
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1)  Given a correctly folded protein, which will digest the protein faster, chymotrypsin or trypsin? Why?



2) How would you distinguish between a reversible and irreversible inhibitor of an enzyme?
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posted by Anonymous on 11/3/2009 11:38:07 AM  |  status: Live
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Response Details:
 Trypsin acts on lysine and arginine residues, while chymotrypsin acts on large hydrophobic residues such as tryptophan, tyrosine and phenylalanine, so which do you think is more prevalent on the substrate?

A reversible inhibitor often binds covalently to the enzyme, so it would form a larger substance. Consequently, they may not be displaced by the addition of excess substrate. What tests could you use to evaluate the size of the molecule, or do you think you could add more substrate?  These are just two ways.
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