e3-ligase
(3)
SEED Therapeutics
SEED Therapeutics is a clinical-stage biotechnology company pioneering rationally designed molecular glue degraders to treat diseases driven by proteins long considered undruggable. Powered by its proprietary RITE3 discovery platform - which pairs disease-causing target proteins with the most suitable of more than 600 human E3 ligases - SEED reprograms the cell's own ubiquitin-proteasome system to destroy harmful proteins rather than merely block them. Founded in 2020 by CEO Lan Huang and a group of protein-degradation pioneers including Nobel laureate Avram Hershko, the company advanced its lead oral RBM39 degrader ST-01156 into first-in-human Phase 1 trials in early 2026, with a broader pipeline spanning oncology, neurodegeneration, immunology and virology backed by partners Eli Lilly and Eisai.
Plexium
Plexium is a San Diego precision medicine company designing small-molecule protein degraders - monovalent direct degraders and molecular glues - that switch off disease-driving proteins traditionally considered undruggable. Its DELTA Discovery platform runs ultra-high-throughput cell-based screening to find and optimize new degrader chemistry across cancer and neurological disease.
Nurix Therapeutics
Nurix Therapeutics is a clinical-stage biopharmaceutical company in San Francisco pioneering targeted protein degradation - medicines that destroy disease-causing proteins rather than merely blocking them. Built on its DELigase discovery engine that harnesses the cell's ubiquitin-proteasome system and DNA-encoded library screening, Nurix is advancing a pipeline of degraders and degrader antibody conjugates for cancer and autoimmune disease, led by the BTK degrader bexobrutideg (NX-5948). The company is partnered with Roche, Sanofi, Gilead, and Pfizer (via Seagen) and trades on Nasdaq under NRIX.