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Fructose 1,6-bisphosphate

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Fructose 1,6-phosphate is fructose sugar phosphorylated on carbons 1 and 6 (ie. is a fructosephosphate). The β-D-form of this compound is very common in cells. The vast majority of glucose and fructose entering a cell will become converted to fructose 1,6-phosphate at some point.

[edit] Fructose 1,6-phosphate in glycolysis

Fructose 1,6-phosphate lies within the glycolysis metabolic pathway and is produced by phosphorylation of fructose 6-phosphate. It is in turn broken down into two compounds; glyceraldehyde 3-phosphate and glycerone phosphate. It is allosteric activator of pyruvate kinase.

β-D-fructose 6-phosphate 6-phosphofructo 1-kinase β-D-fructose 1,6-phosphate Fructose bisphosphate aldolase D-glyceraldehyde 3-phosphate dihydroxyacetone phosphate
Image:Beta-D-fructose-6-phosphate wpmp.png Image:Beta-D-fructose-1,6-bisphosphate wpmp.png Image:D-glyceraldehyde-3-phosphate wpmp.png + Image:Glycerone-phosphate wpmp.png
ATP ADP
Image:Biochem reaction arrow reversible YYYY horiz med.png Image:Biochem reaction arrow reversible NNNN horiz med.png
Pi H2O
Hexose diphosphatase Fructose bisphosphate aldolase

Compound C05345 at KEGG Pathway Database. Enzyme 2.7.1.11 at KEGG Pathway Database. Enzyme 3.1.3.11 at KEGG Pathway Database. Compound C05378 at KEGG Pathway Database. Enzyme 4.1.2.13 at KEGG Pathway Database. Compound C00111 at KEGG Pathway Database. Compound C00118 at KEGG Pathway Database.

The numbering of the carbon atoms indicates the fate of the carbons according to their position in fructose 6-phosphate.

[edit] Fructose 1,6-phosphate isomerism

Main article: Fructose

Fructose 1,6-phosphate has only one biologically active isomer, the β-D-form. There are many other isomers, analogous to those of fructose.

[edit] See also


 

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Glycolysis Metabolic Pathway
Glucose Glucose 6-phosphate Fructose 6-phosphate Fructose 1,6-bisphosphate Dihydroxyacetone phosphate Glyceraldehyde 3-phosphate Glyceraldehyde 3-phosphate
Image:D-glucose wpmp.png ATP ADP Image:Alpha-D-glucose-6-phosphate wpmp.png Image:Beta-D-fructose-6-phosphate wpmp.png ATP ADP Image:Beta-D-fructose-1,6-bisphosphate wpmp.png Image:Glycerone-phosphate wpmp.png Image:D-glyceraldehyde-3-phosphate wpmp.png Image:D-glyceraldehyde-3-phosphate wpmp.png NADP+ + Pi NADPH + H+
Image:Biochem reaction arrow foward YYNN horiz med.png Image:Biochem reaction arrow reversible NNNN horiz med.png Image:Biochem reaction arrow foward YYNN horiz med.png Image:Biochem reaction arrow reversible NNNN horiz med.png + Image:Biochem reaction arrow reversible NNNN horiz med.png 2 Image:Biochem reaction arrow reversible YYYY horiz med.png
NADP+ + Pi NADPH + H+
1,3-bisphosphoglycerate 3-phosphoglycerate 2-phosphoglycerate Phosphoenolpyruvate Pyruvate Acetyl Co-A
Image:1,3-bisphospho-D-glycerate wpmp.png ADP ATP Image:3-phospho-D-glycerate wpmp.png Image:2-phospho-D-glycerate wpmp.png H2O Image:Phosphoenolpyruvate wpmp.png ADP ATP Image:Pyruvate wpmp.png CoA + NADPH + H+ NADP+ + CO2 Image:Acetyl co-A wpmp.png
2 Image:Biochem reaction arrow reversible YYYY horiz med.png 2 Image:Biochem reaction arrow reversible NNNN horiz med.png 2 Image:Biochem reaction arrow reversible NYYN horiz med.png 2 Image:Biochem reaction arrow reversible YYYY horiz med.png 2 Image:Biochem reaction arrow foward YYNN horiz med.png 2
ADP ATP H2O ADP ATP
Image:Glucose wpmp.png This metabolism related chemical article is a stub. You can help Wikipedia by expanding it.
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