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Covalent Fragment Screening and Optimization Identifies the Chloroacetohydrazide Scaffold as Inhibitors for Ubiquitin C-terminal Hydrolase L1

Covalent Modifiers

Herein, we describe a covalent fragment screen that identified the chloroacetohydrazide scaffold as a covalent UCHL1 inhibitor. Subsequent optimization provided an improved fragment with single-digit micromolar potency against UCHL1 and selectivity over the closely related UCHL3.

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Probing the Protein Kinases' Cysteinome by Covalent Fragments

Covalent Modifiers

Previously, covalent fragment screens yielded potent and selective compounds for individual kinases such as ERK1/2 but have not been applied to the broader kinome. Furthermore, many of the accessible cysteine positions have not been addressed so far.

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The Nature of Nanodisc Lipids Influences Fragment‐Based Drug Discovery Results

Chemical Biology and Drug Design

Fragment-based drug discovery (FBDD) was applied to cytochrome P450 3A4 reconstituted in Nanodiscs (NDs) with various lipid compositions. The choice of ND lipid influenced drug membrane interactions and fragment hit rates, demonstrating the critical role of the membrane environment in fragment screening for membrane proteins.

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Covalent Modifiers - Untitled Article

Covalent Modifiers

Overall, we demonstrate that focused covalent fragment screening can be used to rapidly identify highly potent and selective electrophiles targeting bacterial serine hydrolases. This approach could be applied to other classes of lipid hydrolases in diverse pathogens or higher eukaryotes.

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APEIRON Biologics AG and Domainex Ltd announce the expansion of their partnership to progress targeted cancer immune therapy drug discovery

Drug Discovery Today

Integrated lead optimisation to advance APEIRON’s Cbl-b inhibitor development programme APN431; Inhibitors discovered at Domainex via virtual and fragment screening

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Clustering Fragment Screening Hits With a Self-Organizing Map

Practical Cheminformatics

Clustering Fragment Screening Hits With a Self-Organizing Map (SOM) In a paper, " Fragment binding to the Nsp3 macrodomain of SARS-CoV-2 identified through crystallographic screening and computational docking ", published last year by scientists from UCSF and the Diamond Light Source, the authors reported more than 200 structures of fragments bound (..)

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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.