AI-ACCELERATED DRUG DISCOVERY
Available from Reaxense
This protein is integrated into the Receptor.AI ecosystem as a prospective target with high therapeutic potential. We performed a comprehensive characterization of Lysine-specific demethylase 4B including:
1. LLM-powered literature research
Our custom-tailored LLM extracted and formalized all relevant information about the protein from a large set of structured and unstructured data sources and stored it in the form of a Knowledge Graph. This comprehensive analysis allowed us to gain insight into Lysine-specific demethylase 4B therapeutic significance, existing small molecule ligands, relevant off-targets, and protein-protein interactions.
Fig. 1. Preliminary target research workflow
2. AI-Driven Conformational Ensemble Generation
Starting from the initial protein structure, we employed advanced AI algorithms to predict alternative functional states of Lysine-specific demethylase 4B, including large-scale conformational changes along "soft" collective coordinates. Through molecular simulations with AI-enhanced sampling and trajectory clustering, we explored the broad conformational space of the protein and identified its representative structures. Utilizing diffusion-based AI models and active learning AutoML, we generated a statistically robust ensemble of equilibrium protein conformations that capture the receptor's full dynamic behavior, providing a robust foundation for accurate structure-based drug design.
Fig. 2. AI-powered molecular dynamics simulations workflow
3. Binding pockets identification and characterization
We employed the AI-based pocket prediction module to discover orthosteric, allosteric, hidden, and cryptic binding pockets on the protein’s surface. Our technique integrates the LLM-driven literature search and structure-aware ensemble-based pocket detection algorithm that utilizes previously established protein dynamics. Tentative pockets are then subject to AI scoring and ranking with simultaneous detection of false positives. In the final step, the AI model assesses the druggability of each pocket enabling a comprehensive selection of the most promising pockets for further targeting.
Fig. 3. AI-based binding pocket detection workflow
4. AI-Powered Virtual Screening
Our ecosystem is equipped to perform AI-driven virtual screening on Lysine-specific demethylase 4B. With access to a vast chemical space and cutting-edge AI docking algorithms, we can rapidly and reliably predict the most promising, novel, diverse, potent, and safe small molecule ligands of Lysine-specific demethylase 4B. This approach allows us to achieve an excellent hit rate and to identify compounds ready for advanced lead discovery and optimization.
Fig. 4. The screening workflow of Receptor.AI
Receptor.AI, in partnership with Reaxense, developed a next-generation technology for on-demand focused library design to enable extensive target exploration.
The focused library for Lysine-specific demethylase 4B includes a list of the most effective modulators, each annotated with 38 ADME-Tox and 32 physicochemical and drug-likeness parameters. Furthermore, each compound is shown with its optimal docking poses, affinity scores, and activity scores, offering a detailed summary.
Lysine-specific demethylase 4B
partner:
Reaxense
upacc:
O94953
UPID:
KDM4B_HUMAN
Alternative names:
JmjC domain-containing histone demethylation protein 3B; Jumonji domain-containing protein 2B; [histone H3]-trimethyl-L-lysine(9) demethylase 4B
Alternative UPACC:
O94953; B9EGN8; D6W631; O75274; Q6P3R5; Q9P1V1; Q9UF40
Background:
Lysine-specific demethylase 4B, also known as JmjC domain-containing histone demethylation protein 3B or Jumonji domain-containing protein 2B, plays a pivotal role in the epigenetic regulation of gene expression. It specifically targets 'Lys-9' of histone H3 for demethylation, a process crucial for the dynamic regulation of chromatin structure and function. This protein's activity is essential for the development of the central nervous system.
Therapeutic significance:
The protein is implicated in Intellectual developmental disorder, autosomal dominant 65, characterized by delayed motor and speech acquisition, and variably impaired intellectual development. Understanding the role of Lysine-specific demethylase 4B could open doors to potential therapeutic strategies for this disorder.
