Considering the general structure of penicillins, how are they rendered ineffective?   Select one: a. β-Lactamase performs nucleophilic attack of the amide in the penicillin side chain   b. β-Lactamase performs nucleophilic attack of the amide in the β-lactam ring and subsequently hydrolyzes this intermediate   c. β-Lactamase performs nucleophilic attack of the thiazolidone ring on the carbon next to the electronegative sulfur leading to a covalently inhibited β-Lactamase   d. All of these   e. None of these

Biochemistry
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Chapter1: Biochemistry: An Evolving Science
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Considering the general structure of penicillins, how are they rendered ineffective?


 

Select one:
a.

β-Lactamase performs nucleophilic attack of the amide in the penicillin side chain


 

b.

β-Lactamase performs nucleophilic attack of the amide in the β-lactam ring and subsequently hydrolyzes this intermediate


 

c.

β-Lactamase performs nucleophilic attack of the thiazolidone ring on the carbon next to the electronegative sulfur leading to a covalently inhibited β-Lactamase


 

d.

All of these


 

e.

None of these

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