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 Pulmonary surfactant-associated protein A1 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 Pulmonary surfactant-associated protein A1 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 Pulmonary surfactant-associated protein A1, 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 Pulmonary surfactant-associated protein A1. 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 Pulmonary surfactant-associated protein A1. 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 Pulmonary surfactant-associated protein A1 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.
Pulmonary surfactant-associated protein A1
partner:
Reaxense
upacc:
Q8IWL2
UPID:
SFTA1_HUMAN
Alternative names:
35 kDa pulmonary surfactant-associated protein; Alveolar proteinosis protein; Collectin-4
Alternative UPACC:
Q8IWL2; A8K3T8; B7ZW50; E3VLD8; E3VLD9; E3VLE0; E3VLE1; G5E9J3; P07714; Q14DV4; Q5RIR5; Q5RIR7; Q6PIT0; Q8TC19
Background:
Pulmonary surfactant-associated protein A1 (SFTPA1) plays a crucial role in respiratory function by reducing surface tension in the alveoli and facilitating normal breathing. It binds to surfactant phospholipids in the presence of calcium ions and enhances the expression of MYO18A/SP-R210 on alveolar macrophages. Additionally, SFTPA1 is involved in the immune response, recognizing and opsonizing pathogens to aid their elimination.
Therapeutic significance:
SFTPA1 is linked to interstitial lung disease 1 and respiratory distress syndrome in premature infants, diseases characterized by impaired gas exchange and lung function. Understanding the role of SFTPA1 could lead to novel therapeutic strategies for these conditions, emphasizing its importance in drug discovery for respiratory diseases.