|Application ||WB, IHC-P, IF, E|
|Other Accession||NP_056981, 51588|
|Reactivity||Human, Mouse, Rat|
|Calculated MW||Predicted: 56 kDa |
Observed: 56 kDa
|Application Notes||PIAS4 antibody can be used for detection of PIAS4 by Western blot at 1 μg/mL. Antibody can also be used for immunohistochemistry starting at 5 μg/mL. For immunofluorescence start at 20 μg/mL.|
|Target/Specificity||PIAS4 antibody was raised against a 19 amino acid synthetic peptide near the amino terminus of human PIAS4.|
The immunogen is located within amino acids 50 - 100 of PIAS4.
|Reconstitution & Storage||PIAS4 antibody can be stored at 4℃ for three months and -20℃, stable for up to one year. As with all antibodies care should be taken to avoid repeated freeze thaw cycles. Antibodies should not be exposed to prolonged high temperatures.|
|Precautions||PIAS4 Antibody is for research use only and not for use in diagnostic or therapeutic procedures.|
|Function||Functions as an E3-type small ubiquitin-like modifier (SUMO) ligase, stabilizing the interaction between UBE2I and the substrate, and as a SUMO-tethering factor. Plays a crucial role as a transcriptional coregulation in various cellular pathways, including the STAT pathway, the p53/TP53 pathway, the Wnt pathway and the steroid hormone signaling pathway. Involved in gene silencing. Mediates sumoylation of CEBPA, PARK7, HERC2, MYB, TCF4 and RNF168. In Wnt signaling, represses LEF1 and enhances TCF4 transcriptional activities through promoting their sumoylations. Enhances the sumoylation of MTA1 and may participate in its paralog-selective sumoylation.|
|Cellular Location||Nucleus, PML body. Note=Colocalizes with SUMO1 and TCF7L2/TCF4 and LEF1 in a subset of PML (promyelocytic leukemia) nuclear bodies|
|Tissue Location||Highly expressed in testis and, at lower levels, in spleen, prostate, ovary, colon and peripheral blood leukocytes.|
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Provided below are standard protocols that you may find useful for product applications.
PIAS4 Antibody: The PIAS (protein inhibitor of activated STAT) proteins play a crucial role as transcriptional coregulators in various cellular pathways, including the STAT, p53 and the steroid hormone signaling pathway. The PIAS protein family includes at least five evolutionarily conserved genes, including PIAS4. The major function of the PIAS proteins is the control of gene transcription and can also act as small ubiquitin-like-modifier (SUMO) E3 ligases. PIAS4 interacts with p53 and blocks its ability to induce Bax and p21 transcription. PIAS4 is also important in the control of the ubiquitin-dependent proteasomal degradation of the Ets-1 transcription factor. PIAS4 has been implicated in the DNA-damage response pathway and is thought to work in combination with PIAS1 for the productive association of 53BP1, BRCA1 and RNF168.
Shuai K and Liu B. Regulation of gene-activation pathways by PIAS proteins in the immune system. Nat. Rev. Immunol. 2005; 5:593-605.
Nelson V, Davis GE, and Maxwell SA. A putative protein inhibitor of activated STAT (PIASy) interacts with p53 and inhibits p53-,ediated transactivation but not apoptosis. Apoptosis 2001; 6:221-34.
Nishida T, Terashima M, Fukami K, et al. PIASy controls ubiquitin-dependent proteasomal degradation of Ets-1. Biochem. J. 2007; 405:481-8.
Galanty Y, Belotserkovskaya R, Coates J, et al. Mammalian SUMO E3-ligases PIAS1 and PIAS4 promote responses to DNA double-strand breaks. Nature 2009; 462:935-9.
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