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Advancements in hit identification for membrane protein drug discovery

Drug Target Review

PoLiPa detergent-free stabilisation of membrane proteins enables the application of fragment-based screening to GPCRs, expanding the methods possible targets and opening the potential to develop novel therapeutics agents as a result. The Adenosine A2a receptor was expressed in insect cells using a baculoviral expression system.

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Target-directed cancer: protein-ligand interactions  

Drug Target Review

In terms of compound libraries, we have a high-throughput screening library of about 200,000 ligands. For fragment screening, which are much smaller compounds, we have a library of about 3000 fragments. We can screen with many different formats and modalities.

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Silly Things Large Language Models Do With Molecules

Practical Cheminformatics

Testing Claude’s Molecule Generation Ability To test the molecule generation ability of Claude, a general-purpose LLM from Anthropic, I prompted it to generate analogs for hits from fragment screens. These fragment hits are small molecules with between 11 and 21 heavy atoms. Of course, this is ridiculous.

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Practical Cheminformatics - The Directory

Practical Cheminformatics

Multiple Comparisons, Non-Parametric Statistics, and Post-Hoc Tests Some Thoughts on Evaluating Predictive Models Getting a Job How to (Not) Get a Job in Science How (Not) to Get a Job in Science - Part 2 - The Interview Philosophical Musings Where's the code?

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Biophysical Technologies

Sygnature Discovery

Our skilled protein science team can provide in-house production of proteins to support all these assay formats if needed. Sygnature’s protein science team provides protein-observed NMR services, enabling the determination of binding site locations and structural analysis, among other techniques.

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Why fragments?

Molecular Design

Paramin panorama Crystallographic fragment screens have been run recently against the main protease (at Diamond ) and the Nsp3 macrodomain (at UCSF and Diamond ) of SARS-Cov-2 and I thought that it might be of interest to take a closer look at why we screen fragments.

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SARS-CoV-2 Protease Inhibitors: An Attractive Approach for Treating COVID-19

PerkinElmer

The second virtual screen focused on optimization of a hit from a previous crystallographic fragment screen. Fragment-to-lead optimization was guided by searches in a library of millions of compounds combined with docking screens to select the best candidate. 2021;374(6575):1586-1593. Clinicaltrials.gov.