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 Serine/threonine-protein phosphatase 2A 55 kDa regulatory subunit B beta isoform 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 Serine/threonine-protein phosphatase 2A 55 kDa regulatory subunit B beta isoform 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 Serine/threonine-protein phosphatase 2A 55 kDa regulatory subunit B beta isoform, 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 Serine/threonine-protein phosphatase 2A 55 kDa regulatory subunit B beta isoform. 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 Serine/threonine-protein phosphatase 2A 55 kDa regulatory subunit B beta isoform. 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 Serine/threonine-protein phosphatase 2A 55 kDa regulatory subunit B beta isoform 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.
Serine/threonine-protein phosphatase 2A 55 kDa regulatory subunit B beta isoform
partner:
Reaxense
upacc:
Q00005
UPID:
2ABB_HUMAN
Alternative names:
PP2A subunit B isoform B55-beta; PP2A subunit B isoform PR55-beta; PP2A subunit B isoform R2-beta; PP2A subunit B isoform beta
Alternative UPACC:
Q00005; A6NEJ2; A8K102; B3KPD0; B7Z2F2; B7Z304; D3DQF7; D3DQF8; G3V149
Background:
Serine/threonine-protein phosphatase 2A 55 kDa regulatory subunit B beta isoform, known by alternative names such as PP2A subunit B isoform B55-beta, plays a crucial role in cellular processes. It modulates substrate selectivity, catalytic activity, and directs the catalytic enzyme to specific subcellular compartments. Its involvement in promoting proapoptotic activity and regulating neuronal survival through mitochondrial dynamics highlights its multifaceted biological functions.
Therapeutic significance:
Spinocerebellar ataxia 12, a disorder characterized by progressive incoordination and degeneration of the cerebellum, is linked to variants affecting this protein. Understanding the role of Serine/threonine-protein phosphatase 2A 55 kDa regulatory subunit B beta isoform could open doors to potential therapeutic strategies for this and related cerebellar disorders.
