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Related Concept Videos

Imprinting01:22

Imprinting

Behavioral imprinting is observed in some newborn animals and occurs when they develop strong and specific attachments to another animal (usually a parent) following brief, early-life exposures. Offspring imprint onto parents within a brief period after birth or hatching; this time window is called the critical period. Once imprinting occurs, the bond established between the parents and their offspring is usually long-lasting.
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Pharmacogenetics of Drug Targets: β₂-Adrenergic Receptors, Apo E, Thymidylate Synthase

Genetic polymorphisms in drug targets have emerged as critical determinants of interindividual variability in drug response and toxicity. Pharmacogenomic investigations increasingly focus on identifying these variations to personalize and optimize therapeutic interventions. A drug target may be a receptor, enzyme, or signaling protein involved in pharmacologic responses or disease-related pathways. While early pharmacogenetic studies focused primarily on drug metabolism, current research...

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Ultrasensitive Detection of Biomarkers by Using a Molecular Imprinting Based Capacitive Biosensor
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Molecularly imprinted polymers--tyrosinase mimics.

S A Piletsky1, I A Nicholls, M I Rozhko

  • 1Institute of Bioscience and Technology, Cranfield University, UK.

Ukrains'Kyi Biokhimichnyi Zhurnal (1999 )
|July 22, 2009
PubMed
Summary

Researchers developed synthetic polymers that mimic the enzyme tyrosinase. These artificial enzymes show similar activity and stability to natural tyrosinase, offering a robust alternative.

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Area of Science:

  • Biomimetic chemistry
  • Polymer science
  • Enzyme catalysis

Background:

  • Tyrosinase is a crucial enzyme in various biological processes, but natural sources have limitations.
  • Developing artificial enzymes with tyrosinase-like activity is essential for industrial and research applications.
  • Synthetic catalysts offer potential advantages in stability and cost over natural enzymes.

Purpose of the Study:

  • To create synthetic polymers that mimic the catalytic activity of tyrosinase.
  • To investigate the kinetic properties and inhibition patterns of these synthetic polymers.
  • To compare the stability of the synthetic polymers with natural tyrosinase.

Main Methods:

  • Molecular imprinting technique using a complex of Cu(II), catechol, and ethyl ester of urocanic acid.
  • Polymerization within an ethylene glycol dimethacrylate matrix.
  • Characterization of catalytic activity, Michaelis-Menten kinetics, and competitive inhibition.
  • Assessment of chemical and mechanical stability.

Main Results:

  • Successfully synthesized polymers exhibiting tyrosinase-mimicking catalytic activity.
  • Observed Michaelis-Menten kinetics and competitive inhibition consistent with natural tyrosinase.
  • The synthetic polymers demonstrated enhanced chemical and mechanical stability compared to mushroom tyrosinase.

Conclusions:

  • The developed synthetic polymers effectively mimic tyrosinase function.
  • These biomimetic polymers offer a stable and efficient alternative to natural enzymes.
  • The study highlights the potential of molecular imprinting for creating advanced functional materials.