The imidazole ring of the histidine side chain acts as a proton acceptor in certain enzymecatalyzed reactions.

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The imidazole ring of the histidine side chain acts as a proton acceptor in certain enzymecatalyzed reactions. Which is the more stable protonated form of the histidine residue, A or B? Why?

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Organic Chemistry

ISBN: 978-0072905014

4th edition

Authors: Francis A. Carey

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Question Posted: Dec 29, 2009 01:36 AM

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The imidazole ring of the histidine side chain acts as a proton acceptor in certain enzymecatalyzed reactions.

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The protonated form of imidazole represented by structure A is stabilized by delocal...View the full answer

Organic Chemistry

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