RESEARCH: HALOGENASES
FOLDING PROJECT #19201 PROFILE

Many medicines use halogens (like fluorine). Adding them can be tricky, making harmful stuff and not always hitting the right spot. A project is using computer models to see how enzymes called halogenases add halogens. This could lead to safer and more precise medicine-making.

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 in group 17 of the periodic table (F, Cl, Br, I)

Halogens are highly reactive elements frequently used in drug development due to their ability to modify chemical structures and enhance a molecule's pharmacological properties. They can improve a drug's binding affinity to its target or alter its metabolic stability.

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ligand

A molecule that binds to a specific target (e.g., receptor, enzyme) in the body

Ligands are molecules that interact with biological targets like proteins or receptors. In drug development, ligands often serve as the active components of drugs, binding to specific targets to exert their therapeutic effects.

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pharmaceutically

Relating to the preparation and dispensing of medicines

Pharmaceutically refers to anything related to the creation, production, and use of medications. This encompasses various aspects of drug development, from research and testing to manufacturing and distribution.

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medicinal chemist

A scientist specializing in designing and synthesizing new drug molecules

Medicinal chemists are researchers who combine their knowledge of chemistry and biology to develop new drugs. They design, synthesize, and test potential drug candidates, aiming to create molecules that effectively treat diseases.

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halogenation

The process of introducing a halogen atom into an organic molecule

Halogenation is a chemical reaction that adds a halogen atom (like fluorine, chlorine, bromine, or iodine) to an organic molecule. It's a common method used in organic synthesis to modify the properties and reactivity of molecules.

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regioselectivity

The preference of a chemical reaction to form one isomer over others

Regioselectivity refers to the specific location on a molecule where a chemical reaction occurs. In synthesis, achieving high regioselectivity is crucial to obtain the desired product and avoid unwanted byproducts.

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byproduct

An unwanted product formed during a chemical reaction

Byproducts are substances produced unintentionally during a chemical reaction. While some byproducts may be useful, many are undesired and can pose environmental or safety concerns.

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halogenases

Enzymes that catalyze the regioselective halogenation of molecules

Halogenases are a type of enzyme that plays a crucial role in nature by introducing halogens into organic molecules. These enzymes are highly selective and efficient, making them valuable tools for biocatalytic processes.

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Relative Binding Free Energy (RBFE)

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

Relative Binding Free Energy (RBFE) calculations are used in drug discovery to estimate how strongly a molecule binds to its intended target. This information is crucial for identifying potential drug candidates and optimizing their design.