Search Results
Overview
| Uniprot ID | P62191 |
|---|---|
| Protein Name | 26S proteasome regulatory subunit 4 |
| Gene Name | PSMC1 |
| Organism | Homo sapiens |
Kla Sites from experimental identification
| Position | Flanking peptide |
|---|---|
| 23 | KDDKDKKKKYEPPVP |
| 24 | DDKDKKKKYEPPVPT |
| 423 | NEDFKKSKENVLYKK |
Function
Component of the 26S proteasome, a multiprotein complex involved in the ATP-dependent degradation of ubiquitinated proteins. This complex plays a key role in the maintenance of protein homeostasis by removing misfolded or damaged proteins, which could impair cellular functions, and by removing proteins whose functions are no longer required. Therefore, the proteasome participates in numerous cellular processes, including cell cycle progression, apoptosis, or DNA damage repair. PSMC1 belongs to the heterohexameric ring of AAA (ATPases associated with diverse cellular activities) proteins that unfolds ubiquitinated target proteins that are concurrently translocated into a proteolytic chamber and degraded into peptides
Protein Sequence
Gene Ontology
| Classification | GO ID | Description |
|---|---|---|
| Cellular Component | GO:0005829 | cytosol |
| Cellular Component | GO:0016020 | membrane |
| Cellular Component | GO:0005654 | nucleoplasm |
| Cellular Component | GO:0005634 | nucleus |
| Cellular Component | GO:0022624 | proteasome accessory complex |
| Cellular Component | GO:0000502 | proteasome complex |
| Cellular Component | GO:0008540 | proteasome regulatory particle, base subcomplex |
| Cellular Component | GO:0008021 | synaptic vesicle |
| Molecular Function | GO:0005524 | ATP binding |
| Molecular Function | GO:0016887 | ATP hydrolysis activity |
| Molecular Function | GO:0036402 | proteasome-activating activity |
| Molecular Function | GO:0003723 | RNA binding |
| Biological Process | GO:0071357 | cellular response to type I interferon |
| Biological Process | GO:0010498 | proteasomal protein catabolic process |
| Biological Process | GO:0043161 | proteasome-mediated ubiquitin-dependent protein catabolic process |
| Biological Process | GO:0061136 | regulation of proteasomal protein catabolic process |
| Biological Process | GO:0006979 | response to oxidative stress |
Reference
[1] Yang D, Yin J, Shan L, Yi X, Zhang W et al.. Identification of lysine-lactylated substrates in gastric cancer cells.. iScience 25(7):104630. 2022 Jul 15. PMID: 35800753.
[2] Yang Z, Yan C, Ma J, Peng P, Ren X et al.. Lactylome analysis suggests lactylation-dependent mechanisms of metabolic adaptation in hepatocellular carcinoma.. Nat Metab 5(1):61-79. 2023 Jan. PMID: 36593272.
[3] Hong H, Chen X, Wang H, Gu X, Yuan Y et al.. Global profiling of protein lysine lactylation and potential target modified protein analysis in hepatocellular carcinoma.. Proteomics 23(9):e2200432. 2023 May. PMID: 36625413.
[4] He C, Zhang J, Bai X, Lu C, Zhang K. Lysine lactylation-based insight to understanding the characterization of cervical cancer.. Biochim Biophys Acta Mol Basis Dis 1870(7):167356. 2024 Oct. PMID: 39025375.
[5] Guo X, Ren X, Yan C, Huang H. Quantitative Proteomics Reveals the Role of Lysine Lactylation in Lenalidomide-Resistance in Multiple Myeloma Cells.. ACS Chem Biol 20(7):1728-1738. 2025 Jul 18. PMID: 40590393.
[6] He J, Lai T, Zhou Z, Yang H, Lei Z et al.. Multiomics profiling reveals the involvement of protein lactylation in nonhomologous end joining pathway conferring radioresistance in lung adenocarcinoma cell.. Sci Rep 15(1):24651. 2025 Jul 9. PMID: 40634431.
[7] Wu Q, Li Z, Gong T, Zheng X, Zhou X et al.. Porphyromonas gingivalis infection induces lysine lactylation reprogramming in human umbilical vein endothelial cells.. Front Cell Infect Microbiol 16:1706727. 2026. PMID: 41696360.