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 D(1B) dopamine receptor 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 D(1B) dopamine receptor 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 D(1B) dopamine receptor, 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 D(1B) dopamine receptor. 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 D(1B) dopamine receptor. 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 D(1B) dopamine receptor 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.
D(1B) dopamine receptor
partner:
Reaxense
upacc:
P21918
UPID:
DRD5_HUMAN
Alternative names:
D(5) dopamine receptor; D1beta dopamine receptor; Dopamine D5 receptor
Alternative UPACC:
P21918; B2R9S3; Q8NEQ8
Background:
The D(1B) dopamine receptor, also known as the D5 dopamine receptor, plays a crucial role in the central nervous system. Its activity is mediated by G proteins which activate adenylyl cyclase, a pivotal step in the signaling pathways that regulate a wide range of physiological processes. Alternative names for this protein include D(5) dopamine receptor and D1beta dopamine receptor, highlighting its significance in dopamine signaling.
Therapeutic significance:
Benign essential blepharospasm (BEB), a primary focal dystonia affecting the orbicularis oculi muscles, is associated with variants affecting the D(1B) dopamine receptor gene. Understanding the role of the D(1B) dopamine receptor could open doors to potential therapeutic strategies for managing BEB, which can lead to functional blindness in severe cases.
