Difference between revisions of "Hexokinase"
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|<math>Km_{ADP}</math> | |<math>Km_{ADP}</math> | ||
|3.5<ref name="Hernandez2011"></ref> | |3.5<ref name="Hernandez2011"></ref> | ||
+ | |} | ||
+ | |||
+ | |||
+ | ====With inhibition==== | ||
+ | {|class="wikitable" | ||
+ | ! Parameter | ||
+ | ! Value | ||
+ | ! Organism | ||
+ | ! Remarks | ||
+ | |- | ||
+ | |<math>V_{mf}</math> | ||
+ | |0.06 <ref name="Hernandez_2006"> Marín-Hernández A , Rodríguez-Enríquez S, Vital-González P A, ''et al.'' (2006). ''Determining and understanding the control of glycolysis in fast-growth tumor cells. Flux control by an over-expressed but strongly product-inhibited hexokinase''. FEBS J., 273 , pp. 1975–1988([http://dx.doi.org/doi:10.1111/j.1742-4658.2006.05214.x doi]) </ref> | ||
+ | |rowspan="6"|HeLa cell line | ||
+ | |rowspan="6"| | ||
+ | |- | ||
+ | |<math>Km_{Glucose}</math> | ||
+ | |0.1<ref name="Hernandez2011"></ref> | ||
+ | |- | ||
+ | |<math>Km_{ATP}</math> | ||
+ | |1.1<ref name="Hernandez2011"></ref> | ||
+ | |- | ||
+ | |<math>Ki_{Glc6P}</math> | ||
+ | |<math>0.02</math><ref name="Wilson_2003">Wilson J E (2003). ''Isozymes of mammalian hexokinase: structure, subcellular localization and metabolic function''. J. Exp. Biology, 206, pp. 2049–2057</ref> | ||
|} | |} | ||
Revision as of 12:14, 4 March 2014
The enzyme hexokinase phosphorylates (adds a phosphate group to) glucose in the cell's cytoplasm. In the process, a phosphate group from Adenosine triphosphate (ATP) is transferred to glucose producing glucose 6-phosphate (Glc6P).
Contents
Chemical equation
Rate equation
Without inhibition
Random Bi-Bi Michaelis Menten is used.[1]
With allosteric inhibition
Parameters
Without inhibition
Parameter | Value | Organism | Remarks |
---|---|---|---|
0.06 [2] | HeLa cell line | ||
651[3] | |||
0.1[1] | |||
1.1[1] | |||
[1] | |||
3.5[1] |
With inhibition
Parameter | Value | Organism | Remarks |
---|---|---|---|
0.06 [2] | HeLa cell line | ||
0.1[1] | |||
1.1[1] | |||
[4] |
Alternative parameter values
References
- ↑ 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)
- ↑ 2.0 2.1 Marín-Hernández A , Rodríguez-Enríquez S, Vital-González P A, et al. (2006). Determining and understanding the control of glycolysis in fast-growth tumor cells. Flux control by an over-expressed but strongly product-inhibited hexokinase. FEBS J., 273 , pp. 1975–1988(doi)
- ↑ Arbitrary value
- ↑ Wilson J E (2003). Isozymes of mammalian hexokinase: structure, subcellular localization and metabolic function. J. Exp. Biology, 206, pp. 2049–2057