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The ubiquitin-proteasome system (UPS) is responsible for protein degradation in both normal and pathological states. E3 ligases selectively attach ubiquitin to specific substrates, which is essential for regulating cellular homeostasis. The function of E3 ligases has been associated with a variety of diseases, such as cancer and cardiovascular disease. The discovery of E3 ligands can help regulate E3 ligases, thus expanding new ideas for disease treatment. Targeted protein degradation (TPD) drugs, including proteolysis targeting chimera (PROTAC), have become increasingly popular in recent years due to their dependence on E3 ligands. In this paper, we review the discovery techniques of E3 ligands, including activity-based protein mapping, fragment-based drug discovery, and library-based methods, and briefly introduce the protein interaction detection techniques involved in the ligand discovery techniques, in the hope of providing certain ideas for the future discovery of E3 ligands as well as the treatment of diseases.
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| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
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