Page 160 - Color Atlas of Biochemistry
P. 160
Carbohydrate Metabolism 151
A. Glycolysis: balance
2 N A 2 N A
HO CH 2
H O OH COO COO
H
OH H Glycolysis C O C O
HO H ∆G = –35 kJ · mol –1 CH 3 CH 3
OI
H OH 2 A 2 A
P P PP P
Glucose Pyruvate Pyruvate
2 P
B. Reactions
Glucose Fructose Fructose
Glucose 6-phosphate 6-phosphate 1,6-bisphosphate
HO CH 2 P O CH 2 P O CH 2 OH P O CH 2 OH
O O
H O OH H O OH
H H HHO HHO
OH H 1 OH H 2 H CH OH 3 H CH 2 O P
2
HO H HO H
OH H OH H
H OH H OH
A A A A
PPP PP PPP PP
2 2 4
2 A PPP 2 A PP N A N A
O O O O O O P O H
C C C C H C OH
2
HC O P 8 HC OH 7 HC OH 6 HC OH 5 C O
H C OH H C O P H C O P H C O P P O CH 2
2
2
2
2
2 P
2 2-Phospho- 2 3-Phospho- 2 1,3-Bisphospho- Glyceraldehyde Glycerone
glycerate glycerate glycerate 3-phosphate 3-phosphate
9
2 H O C. Energy profile
2
0
O O O O
C C A PPP Steps 1, 3 and 10
are bypassed in
C O P 10 C O gluconeogenesis
1
CH 2 CH 3 -20 A
PP
2 Phospho- 2 Pyruvate
enolpyruvate A A 2
2 PP 2 PPP
A A
PP PPP
-40 A
Glyceraldehyde- PPP
1 Hexokinase 2.7.1.1 6 3- dehydro-
P
Glucose 6-phosphate genase 1.2.1.12 3
2 5 8 9
Isomerase 5.3.1.9 Phosphoglycerate A
7 PP
6-Phosphofructo- kinase 2.7.2.3
3 -60
kinase 2.7.1.11 Phosphoglycerate
8 4 6 7 A PP
Fructose bisphosphate mutase 5.4.2.1
4 10
aldolase 4.1.2.13 Phosphopyruvate
9 A
Triose-phosphate hydratase 4.2.1.11 PPP
5
isomerase 5.3.1.1 Pyruvate kinase -80
10 ' -1 Pyruvate
2.7.1.40 ∆G (kJ · mol )
Koolman, Color Atlas of Biochemistry, 2nd edition © 2005 Thieme
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