RESEARCH: HALOGENASE-DIRECTED-DRUG-DESIGN
FOLDING PROJECT #19229 PROFILE

Many new drugs use halogens (like chlorine or fluorine). But making these changes to molecules can be tricky! Scientists are studying special enzymes called halogenases that do this naturally. This project uses computer models to predict how well different enzymes work on various drug ingredients, hopefully leading to safer and more efficient drug development.

Note: This TLDR is a simplication and may not be 100% accurate.

Approximately 40 percent of drugs approved or currently in clinical testing contain halogens (F, Cl, Br, or I) as pharmaceutically active ligand substituents.

This makes the halogenation of chemical scaffolds an issue of particular interest to medicinal chemists when attempting to synthesize potential drug candidates.

Many of the current methods for halogenation are difficult to control the regioselectivity or produce toxic byproducts during the reaction.

Due to these issues; halogenases, a class of enzymes that catalyze highly regioselective halogenation of various molecules in nature, have been studied as a means to improve existing halogenation methods with less toxic byproducts and higher regioselectivity of reaction.

By utilizing Relative Binding Free Energy calculations (RBFE) across a number of common organic molecule scaffolds, our goal is to better predict the probability and site of halogenation for various common chemical scaffolds across a number of halogenases.

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Halogens

Elements Fluorine (F), Chlorine (Cl), Bromine (Br), and Iodine (I)

Halogens are highly reactive elements often used in pharmaceutical drug development. They can be incorporated into drug molecules to modify their properties and enhance their effectiveness.

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Ligand

A molecule that binds to a receptor or enzyme

Ligands are molecules that attach to specific target sites in the body, such as receptors or enzymes. In drug development, ligands are crucial for creating medications that interact with these targets and produce desired effects.

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Medicinal Chemists

Scientists who design and synthesize new drugs

Medicinal chemists are experts in organic chemistry who focus on creating new medications. They combine their knowledge of chemical structures and biological targets to develop drug candidates that have the potential to treat diseases.

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Halogenation

The process of adding a halogen to a molecule

Halogenation is a chemical reaction that involves introducing a halogen atom (like fluorine, chlorine, bromine, or iodine) into an organic molecule. This process can alter the properties of the molecule and is often used in drug development to enhance its effectiveness.

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Halogenases

Enzymes that catalyze halogenation reactions

Halogenases are a type of enzyme found in nature that can selectively add halogens to molecules. They offer a more environmentally friendly and efficient alternative to traditional chemical methods for halogenation.

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Relative Binding Free Energy (RBFE)

A computational method used to predict the binding affinity of a molecule to a target.

RBFE calculations are a powerful tool in drug discovery. They allow researchers to virtually screen and rank potential drug candidates based on their likelihood to bind strongly to a specific target protein.