3. One indication of the relative importance of various ATP-producing pathways is the Vmax of certain enzymes of these pathways. The values of Vmax of several enzymes from the pectoral muscles (chest muscles used for flying) of pigeon and pheasant are listed below. Vmax (umol substrate/min/g tissue) Enzyme Pigeon Pheasant Hexokinase 3.0 2.3 Glycogen phosphorylase 18.0 120.0 Phosphofructokinase-1 24.0 143.0 Citrate synthase 100.0 15.0 Triacylglycerol lipase 0.07 0.01 a. Discuss the relative importance of glycogen metabolism and fat metabolism in generating ATP in the pectoral muscles of these birds.

Biochemistry
6th Edition
ISBN:9781305577206
Author:Reginald H. Garrett, Charles M. Grisham
Publisher:Reginald H. Garrett, Charles M. Grisham
Chapter18: Glycolysis
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3. One indication of the relative importance of various ATP-producing pathways is the Vmax of certain
enzymes of these pathways. The values of Vmax of several enzymes from the pectoral muscles (chest
muscles used for flying) of pigeon and pheasant are listed below.
Vmax (umol substrate/min/g tissue)
Pigeon
Enzyme
Pheasant
Hexokinase
3.0
2.3
Glycogen phosphorylase
Phosphofructokinase-1
Citrate synthase
Triacylglycerol lipase
Discuss the relative importance of glycogen metabolism and fat metabolism in generating ATP in the
pectoral muscles of these birds.
18.0
120.0
24.0
143.0
100.0
15.0
0.07
0.01
а.
Transcribed Image Text:3. One indication of the relative importance of various ATP-producing pathways is the Vmax of certain enzymes of these pathways. The values of Vmax of several enzymes from the pectoral muscles (chest muscles used for flying) of pigeon and pheasant are listed below. Vmax (umol substrate/min/g tissue) Pigeon Enzyme Pheasant Hexokinase 3.0 2.3 Glycogen phosphorylase Phosphofructokinase-1 Citrate synthase Triacylglycerol lipase Discuss the relative importance of glycogen metabolism and fat metabolism in generating ATP in the pectoral muscles of these birds. 18.0 120.0 24.0 143.0 100.0 15.0 0.07 0.01 а.
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