RESEARCH: HALOGENASES
FOLDING PROJECT #19213 PROFILE

Many medicines use halogens (like fluorine). Adding these can be tricky and create harmful waste. Scientists are studying special enzymes called halogenases that do this naturally. The project uses computer models to predict how well different enzymes add halogens to common molecules.

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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halogen

Elements fluorine (F), chlorine (Cl), bromine (Br), and iodine (I).

Halogens are elements frequently used in drug development. They can be incorporated into chemical structures to modify a drug's properties, such as its effectiveness or how it interacts with the body.

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ligand

A molecule that binds to a specific receptor or protein.

Ligands are molecules that attach to receptors in the body. They can activate or block these receptors, leading to various biological effects. In drug development, ligands are often designed to bind to specific targets and produce desired therapeutic outcomes.

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regioselectivity

The preferential formation of one isomer over others during a chemical reaction.

Regioselectivity refers to the tendency of a chemical reaction to produce a specific isomer (a molecule with the same atoms but different arrangement). In drug synthesis, regioselectivity is crucial for obtaining the desired product with the correct structure and properties.

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halogenase

An enzyme that catalyzes the addition of a halogen atom to a molecule.

Halogenases are enzymes that facilitate the introduction of halogens (fluorine, chlorine, bromine, or iodine) into molecules. They play a vital role in various biological processes and are being explored for their potential in developing sustainable chemical synthesis methods.

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Relative Binding Free Energy (RBFE)

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

Relative Binding Free Energy (RBFE) calculations are a computational tool used in drug discovery. They help researchers predict how strongly a potential drug candidate will bind to its target protein. This information is crucial for optimizing drug design and identifying promising compounds for further development.