Difference between revisions of "Hexose-6-phosphate isomerase"
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Reversible competitive inhibition with Ery4P, 6PG and FBP. <ref name="Hernandez2011"> Marín-Hernández A, Gallardo-Pérez JC, Rodríguez-Enríquez S et al (2011) Modeling cancer glycolysis. Biochim Biophys Acta 1807:755–767 ([http://dx.doi.org/10.1016/j.bbabio.2010.11.006 doi]) </ref> | Reversible competitive inhibition with Ery4P, 6PG and FBP. <ref name="Hernandez2011"> Marín-Hernández A, Gallardo-Pérez JC, Rodríguez-Enríquez S et al (2011) Modeling cancer glycolysis. Biochim Biophys Acta 1807:755–767 ([http://dx.doi.org/10.1016/j.bbabio.2010.11.006 doi]) </ref> | ||
− | <center><math>\frac{V_{mf}\frac{[Glc6P]}{ | + | <center><math>\frac{V_{mf}\frac{[Glc6P]}{Km_{Glc6P}} - V_{mr} \frac{[Fru6P]}{Km_{Fru6P}} }{ 1 + \frac{[Glc6P]}{Km_{Glc6P}} + \frac{[Fru6P]}{Km_{Fru6P}} + \frac{[ERY4P]}{Km_{ERY4P}} + \frac{[6PG]}{Km_{6PG}} + \frac{[FBP]}{Km_{FBP}} }</math></center> |
==Parameters== | ==Parameters== |
Revision as of 12:42, 4 March 2014
The enzyme Hexose-6-phosphate isomerase converts Glucose 6-phosphate (Glc6P) into its isomer Fructose 6-phosphate (Fru6P). Isomers have the same molecular formula, but the atoms of each molecule are arranged differently.
Chemical reaction
![Glc6P \rightleftharpoons Fru6P](/wiki/images/math/b/1/4/b14645d59b3d0fb5d71b606423689d03.png)
Rate equation
Reversible competitive inhibition with Ery4P, 6PG and FBP. [1]
![\frac{V_{mf}\frac{[Glc6P]}{Km_{Glc6P}} - V_{mr} \frac{[Fru6P]}{Km_{Fru6P}} }{ 1 + \frac{[Glc6P]}{Km_{Glc6P}} + \frac{[Fru6P]}{Km_{Fru6P}} + \frac{[ERY4P]}{Km_{ERY4P}} + \frac{[6PG]}{Km_{6PG}} + \frac{[FBP]}{Km_{FBP}} }](/wiki/images/math/f/4/8/f48a024357c256e49cfa84fe643e81cc.png)
Parameters
Parameter | Value | Organism | Remarks |
---|---|---|---|
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1.2 ![]() |
HeLa cell line | 3 cell assays |
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2.8[1] | 1 cell assay | |
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0.4 ![]() |
3 cell assays | |
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0.05[1] | 2 cell assays | |
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3.5[1] |
Alternative parameter values
Refences
- ↑ 1.0 1.1 1.2 1.3 1.4 1.5 1.6 Marín-Hernández A, Gallardo-Pérez JC, Rodríguez-Enríquez S et al (2011) Modeling cancer glycolysis. Biochim Biophys Acta 1807:755–767 (doi) Cite error: Invalid
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