1/100 - 1/250. Perform heat mediated antigen retrieval via the pressure cooker method before commencing with IHC staining protocol. Heat up to 98 degrees C, below boiling, and then let cool for 10-20 min.
1/100 - 1/250.
1/100 - 1/500. ab172730-Rabbit monoclonal IgG, is suitable for use as an isotype control with this antibody.
Application notesIs unsuitable for IP.
FunctionFunctions 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 pathway and the steroid hormone signaling pathway. In vitro, binds A/T-rich DNA. The effects of this transcriptional coregulation, transactivation or silencing, may vary depending upon the biological context. Together with PRMT1, may repress STAT1 transcriptional activity, in the late phase of interferon gamma (IFN-gamma) signaling.
Tissue specificityExpressed in numerous tissues with highest level in testis.
PathwayProtein modification; protein sumoylation.
Sequence similaritiesBelongs to the PIAS family. Contains 1 PINIT domain. Contains 1 SAP domain. Contains 1 SP-RING-type zinc finger.
DomainThe LXXLL motif is a transcriptional coregulator signature. The SP-RING-type domain is required for promoting EKLF sumoylation.
Post-translational modificationsSumoylated. Dimethylated by PRMT1 at Arg-303 in the late phase of interferon gamma (IFN-gamma) signaling, leading to preferential interaction with STAT1 and thus resulting in release of STAT1 from its target gene.
Cellular localizationNucleus speckle. Interaction with CSRP2 may induce a partial redistribution along the cytoskeleton.
References for Anti-PIAS1 antibody [EPR2580(2)] (ab109388)
This product has been referenced in:
Chiou HY et al. Hes-1 SUMOylation by protein inhibitor of activated STAT1 enhances the suppressing effect of Hes-1 on GADD45a expression to increase cell survival. J Biomed Sci21:53 (2014).
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