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1. Consider below the first step in the hydrolysis reaction of PEP which generates phosphate and the enol form of pyruvate. The standard state free energy change is very exergonic (-28.6 kJ/mol). ОН 0-P-O- + H,O -0-P-O- + H,C=C COO AG=-28.6 kJ/mol Pyruvate (unstable enol form) H,C=C-CO0- РЕР

1. Consider below the first step in the hydrolysis reaction of PEP which generates phosphate and the enol form of pyruvate. The standard state free energy change is very exergonic (-28.6 kJ/mol). ОН 0-P-O- + H,O -0-P-O- + H,C=C COO AG=-28.6 kJ/mol Pyruvate (unstable enol form) H,C=C-CO0- РЕР

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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1. Consider below the first step in the hydrolysis reaction of PEP which generates phosphate and the enol form of pyruvate. The standard state free energy change is very exergonic (-28.6 kJ/mol). OH "0-P-O- + H2O 0-P-O + H,C=C-COO- AG =-28,6 kJ/mol Pyruvate (unstable enol form) OH H,C=C-C00- РЕР i) Is there an increase, decrease or no change in enthalpy? Briefly state why. ii) Is there an increase, decrease or no change in entropy? Briefly state why. iii) Is there an increase, decrease or no change in amount of resonance structures? Show by drawing relevant resonance structures of reactants and products.
Transcribed Image Text:1. Consider below the first step in the hydrolysis reaction of PEP which generates phosphate and the enol form of pyruvate. The standard state free energy change is very exergonic (-28.6 kJ/mol). OH "0-P-O- + H2O 0-P-O + H,C=C-COO- AG =-28,6 kJ/mol Pyruvate (unstable enol form) OH H,C=C-C00- РЕР i) Is there an increase, decrease or no change in enthalpy? Briefly state why. ii) Is there an increase, decrease or no change in entropy? Briefly state why. iii) Is there an increase, decrease or no change in amount of resonance structures? Show by drawing relevant resonance structures of reactants and products.
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