4. (a) courses (such as this one) that NADH produced through glycoly- H °H sis in the cytosol can be used to generate ATP in the mitochon- dria. Yet, if 7-(14C)-NADH (in which the nicotinamide C-7 position is radioactively labeled; see diagram on the right) is added to rat hepatocytes, no radioactivity appears in the mitochondrial matrix while, if 4-(H)-NADH is added to hepatocytes, the tritium label soon appears in the mitochondrial matrix. Explain. It is generally stated and taught in biochemistry н, NH2 NH2 R R [4-°H]NADH [7-14CINADH

Biochemistry
6th Edition
ISBN:9781305577206
Author:Reginald H. Garrett, Charles M. Grisham
Publisher:Reginald H. Garrett, Charles M. Grisham
Chapter18: Glycolysis
Section: Chapter Questions
Problem 20P: Understanding the Mechanism of Hemolytic Anemia Genetic defects in glycolytic enzymes can have...
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4. (a)
courses (such as this one) that NADH produced through glycoly- °H °H!
sis in the cytosol can be used to generate ATP in the mitochon-
dria. Yet, if 7-(14C)-NADH (in which the nicotinamide C-7 position
is radioactively labeled; see diagram on the right) is added to rat
hepatocytes, no radioactivity appears in the mitochondrial matrix
while, if 4-(H)-NADH is added to hepatocytes, the tritium label
soon appears in the mitochondrial matrix. Explain.
It is generally stated and taught in biochemistry
H H
`NH2
NH2
R
R
[4-°H]NADH
[7-14C]NADH
Transcribed Image Text:4. (a) courses (such as this one) that NADH produced through glycoly- °H °H! sis in the cytosol can be used to generate ATP in the mitochon- dria. Yet, if 7-(14C)-NADH (in which the nicotinamide C-7 position is radioactively labeled; see diagram on the right) is added to rat hepatocytes, no radioactivity appears in the mitochondrial matrix while, if 4-(H)-NADH is added to hepatocytes, the tritium label soon appears in the mitochondrial matrix. Explain. It is generally stated and taught in biochemistry H H `NH2 NH2 R R [4-°H]NADH [7-14C]NADH
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