In experiments carried out in 1941 to investigate the citric acid cycle, oxaloacetate labeled with ¹4C in the carboxyl carbon atom farthest from the keto group was introduced to an active preparation of mitochondria. COO CH₂ COO™ Oxaloacetate Analysis of the a-ketoglutarate formed showed that none of the radioactive label had been lost. Decarboxylation of x-ketoglutarate then yielded succinate devoid of radioactivity. All the label was in the released CO₂. Use an asterisk (*) to indicate the location of ¹4C in the intermediates and products of the pathway that converts [¹4C] oxaloacetate into succinate.

Basic Clinical Laboratory Techniques 6E
6th Edition
ISBN:9781133893943
Author:ESTRIDGE
Publisher:ESTRIDGE
Chapter1: The Clinical Laboratory
Section1.7: The Metric System
Problem 4RQ
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COO
OOD
CH₂
14 COO
[14C]Oxaloacetate
-COO™
CH₂
0 CH₂
-COO
OOC
D
*
COO
-CH₂
-C- -OH
CH₂
COO
Citrate
COO
-CH₂
-CH₂
=0
S-COA
CO₂
-CH₂
-COO
OOC-CH
0 HC
0
C
-OH
Isocitrate
Kdo₂
COO
-CH₂
CH₂
=O
-COO™
Transcribed Image Text:COO OOD CH₂ 14 COO [14C]Oxaloacetate -COO™ CH₂ 0 CH₂ -COO OOC D * COO -CH₂ -C- -OH CH₂ COO Citrate COO -CH₂ -CH₂ =0 S-COA CO₂ -CH₂ -COO OOC-CH 0 HC 0 C -OH Isocitrate Kdo₂ COO -CH₂ CH₂ =O -COO™
In experiments carried out in 1941 to investigate the citric acid cycle, oxaloacetate labeled with ¹4C in the carboxyl carbon atom
farthest from the keto group was introduced to an active preparation of mitochondria.
COO™
CH₂
COO™
Oxaloacetate
Analysis of the a-ketoglutarate formed showed that none of the radioactive label had been lost. Decarboxylation of
a-ketoglutarate then yielded succinate devoid of radioactivity. All the label was in the released CO₂.
Use an asterisk (*) to indicate the location of ¹4℃ in the intermediates and products of the pathway that converts
[¹4C] oxaloacetate into succinate.
Transcribed Image Text:In experiments carried out in 1941 to investigate the citric acid cycle, oxaloacetate labeled with ¹4C in the carboxyl carbon atom farthest from the keto group was introduced to an active preparation of mitochondria. COO™ CH₂ COO™ Oxaloacetate Analysis of the a-ketoglutarate formed showed that none of the radioactive label had been lost. Decarboxylation of a-ketoglutarate then yielded succinate devoid of radioactivity. All the label was in the released CO₂. Use an asterisk (*) to indicate the location of ¹4℃ in the intermediates and products of the pathway that converts [¹4C] oxaloacetate into succinate.
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