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In the chemical mechanism of chymotrypsin, the group that acts as a general base in the deacylation half reaction is O an O of a Ser hydroxyl the unprotonated carboxylate of an Asp the unprotonated imidazole of a His residue an OH from H2O the unprotonated a-amino group

In the chemical mechanism of chymotrypsin, the group that acts as a general base in the deacylation half reaction is O an O of a Ser hydroxyl the unprotonated carboxylate of an Asp the unprotonated imidazole of a His residue an OH from H2O the unprotonated a-amino group

Biochemistry
Biochemistry
9th Edition
ISBN:9781319114671
Author:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.
Publisher:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.
Chapter1: Biochemistry: An Evolving Science
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In the chemical mechanism of chymotrypsin, the group that acts as a general base in the deacylation half reaction is an O of a Ser hydroxyl O the unprotonated carboxylate of an Asp the unprotonated imidazole of a His residue an OH from H2O the unprotonated a-amino group
Transcribed Image Text:In the chemical mechanism of chymotrypsin, the group that acts as a general base in the deacylation half reaction is an O of a Ser hydroxyl O the unprotonated carboxylate of an Asp the unprotonated imidazole of a His residue an OH from H2O the unprotonated a-amino group
Which of the following statements is correct? None is correct. The electron acceptor for the reaction catalyzed by glyceraldehyde 3- phosphate dehydrogenase is Coenzyme A. The phosphate in the "high energy phosphate" state in the product of glyceraldehyde 3-phosphate dehydrogenase comes from inorganic phosphate. The energy for production of the "high energy phosphate" bond in the product of the glyceraldehyde 3-phosphate dehydrogenase comes from oxidation of NADH to NAD+. The enzyme glyceraldehyde 3-phosphate dehydrogenase produces the "high-energy phosphate" compound phosphoenolpyruvate.
Transcribed Image Text:Which of the following statements is correct? None is correct. The electron acceptor for the reaction catalyzed by glyceraldehyde 3- phosphate dehydrogenase is Coenzyme A. The phosphate in the "high energy phosphate" state in the product of glyceraldehyde 3-phosphate dehydrogenase comes from inorganic phosphate. The energy for production of the "high energy phosphate" bond in the product of the glyceraldehyde 3-phosphate dehydrogenase comes from oxidation of NADH to NAD+. The enzyme glyceraldehyde 3-phosphate dehydrogenase produces the "high-energy phosphate" compound phosphoenolpyruvate.
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