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Short strong hydrogen bonds: can they explain enzymic catalysis?
1Department of Chemistry, University of Western Ontario, London, Ontario N6A 5B7, Canada.
Chemistry & Biology
|March 1, 1996
Summary
Strong hydrogen bonds are proposed to explain enzyme catalysis, but evidence is lacking. This study finds no basis for invoking these bonds to explain enzyme rate enhancements.
Area of Science:
- Biochemistry
- Enzymology
- Chemical Physics
Background:
- Enzyme catalysis is crucial for biological processes.
- Unusually strong hydrogen bonds have been hypothesized to explain significant enzymic catalytic effects.
- These proposed bonds are thought to be short with unique properties.
Purpose of the Study:
- To investigate the validity of the hypothesis that unusually strong hydrogen bonds explain enzyme catalysis.
- To assess the evidence for the existence of such bonds in enzyme active sites and solutions.
Main Methods:
- Review of existing scientific literature and experimental data.
- Analysis of theoretical models related to hydrogen bonding and enzyme mechanisms.
Main Results:
- No experimental evidence supports the existence of unusually strong hydrogen bonds in solution.
- No evidence indicates that such bonds are present within enzyme active sites.
- The proposed unusual properties of these bonds lack empirical validation.
Conclusions:
- The hypothesis attributing remarkable enzymic catalytic effects to unusually strong hydrogen bonds is not supported by current evidence.
- There is no scientific basis for invoking strong hydrogen bonds to explain enzyme rate enhancements.
- Further research should focus on established mechanisms of enzyme catalysis.
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