D-xylulose
reductase
trifunctional
aldehyde
reductase/xylose
reductase/glucose
1-dehydrogenase
(NADP(+)
Xylulose kinase
Ribulose-
phosphate
3-epimerase
Transaldolase
NQM1
Transaldolase
TAL1
Transketolase 1
Transketolase 2
Ribose-5-
phosphate
isomerase
Transketolase 1
Transketolase 2
D-Xylitol
NAD
NADH
H+
D-Xylulose
D-Xylose
NADP
NADPH
H+
ATP
Xylulose
5-phosphate
ADP
H+
D-Ribulose
5-phosphate
D-
Glyceraldehyde
3-phosphate
D-Sedoheptulose
7-phosphate
D-Erythrose
4-phosphate
β-D-
fructofuranose
6-phosphate
Xylulose
5-phosphate
β-D-
fructofuranose
6-phosphate
D-
Glyceraldehyde
3-phosphate
D-Ribose
5-phosphate
Xylulose
5-phosphate