Packet 10: Tossup 15

Cholera toxin ADP ribosylates a protein’s G-s-alpha subunit, thereby preventing this reaction from occurring. (15[1]-5[2])The mechanism of most glycosidases occurs through this type of reaction. Performing this reaction (-5[1])on amides results (15[1])in carboxylic acids. (-5[1])In muscle contraction, (15[1])this type (-5[1])of reaction re-positions the myosin (-5[1])head, readying (15[1])it to bind (15[1]-5[1])to (*) actin. (-5[1])Once a protein is tagged by ubiquitin, it is subjected (-5[1])to this type of reaction. (-5[3])This (10[1])reaction, which releases ADP and an inorganic (-5[1])phosphate (-5[2])when it is done (-5[1])on (10[1])ATP, (10[1])is the (10[1])opposite of dehydration synthesis. (10[5])For 10 (10[1])points, (10[1])name this reaction (10[1]-5[1])that uses water to break (10[1])down (-5[2])macromolecules. (10[2])■END■ (10[12]0[7])

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