Mutated Alcohol Oxidases for Better Biosensors
Author Information
Author(s): Dmytruk Kostyantyn V, Smutok Oleh V, Ryabova Olena B, Gayda Galyna Z, Sibirny Volodymyr A, Schuhmann Wolfgang, Gonchar Mykhailo V, Sibirny Andriy A
Primary Institution: Institute of Cell Biology, NAS of Ukraine
Hypothesis
Can mutated alcohol oxidases from Hansenula polymorpha be used to create more effective biosensors with decreased substrate affinity?
Conclusion
The study successfully developed mutant alcohol oxidases that have decreased affinity towards substrates, which can improve the performance of ethanol biosensors.
Supporting Evidence
- The mutant AOX alleles showed decreased affinity towards methanol compared to the wild type.
- The constructed biosensor based on the mutated AOX had an extended linear response to ethanol.
- The study identified several point mutations in the AOX gene that contributed to the decreased substrate affinity.
Takeaway
Scientists made special versions of an enzyme that helps measure alcohol, making it easier to use in tests without needing to dilute samples.
Methodology
Mutant strains of Hansenula polymorpha were selected and characterized for their alcohol oxidase activity, followed by the construction of an amperometric biosensor using the mutated enzymes.
Limitations
The study focused on specific mutant strains, which may limit the generalizability of the findings to other strains or conditions.
Digital Object Identifier (DOI)
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