Cell Signaling Technology

Product Pathways - Protein Stability

PSMD2 (D6W7G) Rabbit mAb #25430

Proteasome   PSMD2   RPN1  

No. Size Price
25430S 100 µl ( 10 western blots ) ¥3,100.00 现货查询 购买询价
25430 carrier free & custom formulation / quantityemail request
Applications Dilution Species-Reactivity Sensitivity MW (kDa) Isotype
W 1:1000 Human,Mouse,Rat,Monkey, Endogenous 97 Rabbit IgG

Species cross-reactivity is determined by western blot.

Applications Key: W=Western Blotting,

Specificity / Sensitivity

PSMD2 (D6W7G) Rabbit mAb recognizes endogenous levels of total PSMD2 protein.

Source / Purification

Monoclonal antibody is produced by immunizing animals with a synthetic peptide corresponding to residues surrounding Lys350 of human PSMD2 protein.

Western Blotting

Western Blotting

Western blot analysis of extracts from various cell lines using PSMD2 (D6W7G) Rabbit mAb.

Western Blotting

Western Blotting

Western blot analysis of extracts from 293T cells, mock transfected (-) or transfected with a construct expressing Myc/DDK-tagged full-length human PSMD2 protein (hPSMD2-Myc/DDK; +), using PSMD2 (D6W7G) Rabbit mAb.


The 26S proteasome is a highly abundant proteolytic complex involved in the degradation of ubiquitinated substrate proteins. It consists largely of two sub-complexes, the 20S catalytic core particle (CP) and the 19S/PA700 regulatory particle (RP) that can cap either end of the CP. The CP consists of two stacked heteroheptameric β-rings (β1-7) that contain three catalytic β-subunits and are flanked on either side by two heteroheptameric α-rings (α1-7). The RP includes a base and a lid, each having multiple subunits. The base, in part, is composed of a heterohexameric ring of ATPase subunits belonging to the AAA (ATPases Associated with diverse cellular Activities) family. The ATPase subunits function to unfold the substrate and open the gate formed by the α-subunits, thus exposing the unfolded substrate to the catalytic β-subunits. The lid consists of ubiquitin receptors and DUBs that function in recruitment of ubiquitinated substrates and modification of ubiquitin chain topology (1,2). Other modulators of proteasome activity, such as PA28/11S REG, can also bind to the end of the 20S CP and activate it (1,2).

Regulatory particle non-ATPase 1 (RPN1, PSMD2) is a subunit of the 19S/PA700 regulatory particle base subcomplex. The PSMD2 protein acts as part of the scaffold for assembly of the 19S/PA700 RP base subcomplex (3). Research studies demonstrate that PSMD2 binds the intracellular domain of type I TNF receptor, indicating that the 26S proteasome may play a role in the TNF signaling pathway (4,5). PSMD2 expression correlates with poor prognosis in lung cancer patients, and induced inhibition of PSMD2 results in decreased proteasome activity and increased apoptosis in lung cancer cells (6).

  1. Finley, D. (2009) Annu Rev Biochem 78, 477-513.
  2. Lee, M.J. et al. (2011) Mol Cell Proteomics 10, R110.003871.
  3. Rosenzweig, R. et al. (2008) Nat Struct Mol Biol 15, 573-80.
  4. Tsurumi, C. et al. (1996) Eur J Biochem 239, 912-21.
  5. Dunbar, J.D. et al. (1997) J Immunol 158, 4252-9.
  6. Matsuyama, Y. et al. (2011) Mol Carcinog 50, 301-9.

Application References

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