Skip to main content
  •   Home
  •   Download
  •   Manual
  •   Contact

Molecule Details

General Information of the Molecule
Name
Proteasome alpha 3 (PSMA3)
Synonyms
Macropain subunit C8; Multicatalytic endopeptidase complex subunit C8; Proteasome component C8
Gene Name
PSMA3
Gene ID
5684
Sequence
MSSIGTGYDLSASTFSPDGRVFQVEYAMKAVENSSTAIGIRCKDGVVFGVEKLVLSKLYE
EGSNKRLFNVDRHVGMAVAGLLADARSLADIAREEASNFRSNFGYNIPLKHLADRVAMYV
HAYTLYSAVRPFGCSFMLGSYSVNDGAQLYMIDPSGVSYGYWGCAIGKARQAAKTEIEKL
QMKEMTCRDIVKEVAKIIYIVHDEVKDKAFELELSWVGELTNGRHEIVPKDIREEAEKYA
KESLKEEDESDDDNM
    Click to Show/Hide
Function
Component of the 20S core proteasome complex involved in the proteolytic degradation of most intracellular proteins. This complex plays numerous essential roles within the cell by associating with different regulatory particles. Associated with two 19S regulatory particles, forms the 26S proteasome and thus participates in the ATP-dependent degradation of ubiquitinated proteins. The 26S proteasome plays a key role in the maintenance of protein homeostasis by removing misfolded or damaged proteins that could impair cellular functions, and by removing proteins whose functions are no longer required. Associated with the PA200 or PA28, the 20S proteasome mediates ubiquitin-independent protein degradation. This type of proteolysis is required in several pathways including spermatogenesis (20S-PA200 complex) or generation of a subset of MHC class I-presented antigenic peptides (20S-PA28 complex). Binds to the C-terminus of CDKN1A and thereby mediates its degradation. Negatively regulates the membrane trafficking of the cell-surface thromboxane A2 receptor (TBXA2R) isoform 2.
    Click to Show/Hide
Uniprot ID
PSA3_HUMAN
Pfam
PF00227 ; PF10584
KEGG ID
hsa5684
Drug(s) of This Target
1 AT101  Drug Info  Phase 2 Prostate cancer
2 Laninamivir  Drug Info  Phase 2 Influenza
References
Reference 1 Synergism of arsenic trioxide and MG132 in Raji cells attained by targeting BNIP3, autophagy, and mitochondria with low doses of valproic acid and vincristine. Eur J Cancer. 2014 Dec;50(18):3243-61.
Reference 2 Gambogic acid enhances proteasome inhibitor-induced anticancer activity. Cancer Lett. 2011 Feb 28;301(2):221-8.
Cite NPCDR
Visitor Map
Correspondence

X. N. Sun, Y. T. Zhang, Y. Zhou, X. C. Lian, L. L. Yan, T. Pan, T. Jin, H. Xie, Z. M. Liang, W. Q. Qiu, J. X. Wang, Z. R. Li, F. Zhu*, X. B. Sui*. NPCDR: natural product-based drug combination and its disease-specific molecular regulation. Nucleic Acids Research. 50(D1): 1324-1333 (2020). PMID: 34664659

Prof. Feng ZHU  (zhufeng@zju.edu.cn)

College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, China


Prof. Xinbing SUI  (hzzju@hznu.edu.cn)

School of Pharmacy and Department of Medical Oncology, the Affiliated Hospital of Hangzhou Normal University, Hangzhou Normal University, Hangzhou, China