PSME3 Antibody - #DF6074
*The optimal dilutions should be determined by the end user.
WB: For western blot detection of denatured protein samples. IHC: For immunohistochemical detection of paraffin sections (IHC-p) or frozen sections (IHC-f) of tissue samples. IF/ICC: For immunofluorescence detection of cell samples. ELISA(peptide): For ELISA detection of antigenic peptide.
Cite Format: Affinity Biosciences Cat# DF6074, RRID:AB_2838042.
11S regulator complex gamma subunit; 11S regulator complex subunit gamma; Activator of multicatalytic protease subunit 3; Ki; Ki antigen; Ki nuclear autoantigen; Ki, PA28 gamma; PA28 gamma; PA28g; PA28gamma; Proteasome (prosome, macropain) activator subunit 3 (PA28 gamma; Ki); Proteasome (prosome, macropain) activator subunit 3; Proteasome activator 28 gamma; Proteasome activator 28 subunit gamma; Proteasome activator complex subunit 3; Proteasome activator subunit 3; PSME3; PSME3_HUMAN; REG GAMMA; REG-gamma;
Score>80(red) has high confidence and is suggested to be used for WB detection. *The prediction model is mainly based on the alignment of immunogen sequences, the results are for reference only, not as the basis of quality assurance.
High(score>80) Medium(80>score>50) Low(score<50) No confidence
PTMs - P61289 As Substrate
Subunit of the 11S REG-gamma (also called PA28-gamma) proteasome regulator, a doughnut-shaped homoheptamer which associates with the proteasome. 11S REG-gamma activates the trypsin-like catalytic subunit of the proteasome but inhibits the chymotrypsin-like and postglutamyl-preferring (PGPH) subunits. Facilitates the MDM2-p53/TP53 interaction which promotes ubiquitination- and MDM2-dependent proteasomal degradation of p53/TP53, limiting its accumulation and resulting in inhibited apoptosis after DNA damage. May also be involved in cell cycle regulation. Mediates CCAR2 and CHEK2-dependent SIRT1 inhibition.
Phosphorylated by MAP3K3 (By similarity). Phosphorylation at Ser-247 promotes its association with CCAR2.
Acetylation at the major site Lys-195 is important for oligomerization and ability to degrade its target substrates. Deacetylated by SIRT1.
Note: Localizes to the cytoplasm during mitosis following nuclear envelope breakdown at this distinct stage of the cell cycle which allows its interaction with MAP3K3 kinase.
Homoheptamer; the stability of the heptamer is essential for the specific activation of the trypsine-like subunit and inhibition of the chymotrypsin-like and postglutamyl-preferring (PGPH) subunits of the proteasome. Interacts with p53/TP53 and MDM2. Interacts with MAP3K3 (By similarity). Associates with the proteasome. Interacts with CCAR2. Interacts with PSME3IP1 (via C-terminus); the interaction is direct and promotes the association of PSME3 with the 20S proteasome. Interacts with COIL; the interaction is inhibited by PSME3IP1.
(Microbial infection) Interacts with human cytomegalovirus UL27.
The C-terminal sequences affect heptamer stability and proteasome affinity.
Belongs to the PA28 family.
Application: WB Species: rat Sample: gastrocnemius muscle tissue
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