Overview

Product Description	Rabbit Polyclonal antibody recognizes PIAS1
Tested Reactivity	Hu
Tested Application	ICC/IF
Host	Rabbit
Clonality	Polyclonal
Isotype	IgG
Target Name	PIAS1
Antigen Species	Human
Immunogen	Recombinant fusion protein corresponding to aa. 422-651 of Human PIAS1 (NP_057250.1).
Conjugation	Un-conjugated
Alternate Names	Protein inhibitor of activated STAT protein 1; EC 6.3.2.-; Gu-binding protein; DEAD/H box-binding protein 1; E3 SUMO-protein ligase PIAS1; DDXBP1; GBP; RNA helicase II-binding protein; ZMIZ3; GU/RH-II

Application Instructions

Application Suggestion	Tested Application Dilution ICC/IF 1:50 - 1:200
Application Note	* The dilutions indicate recommended starting dilutions and the optimal dilutions or concentrations should be determined by the scientist.

Properties

Form	Liquid
Purification	Affinity purified.
Buffer	PBS (pH 7.3), 0.02% Sodium azide and 50% Glycerol.
Preservative	0.02% Sodium azide
Stabilizer	50% Glycerol
Storage Instruction	For continuous use, store undiluted antibody at 2-8°C for up to a week. For long-term storage, aliquot and store at -20°C. Storage in frost free freezers is not recommended. Avoid repeated freeze/thaw cycles. Suggest spin the vial prior to opening. The antibody solution should be gently mixed before use.
Note	For laboratory research only, not for drug, diagnostic or other use.

Bioinformation

Database Links	GeneID: 8554 Human PIAS1 Swiss-port # O75925 Human E3 SUMO-protein ligase PIAS1
Gene Symbol	PIAS1
Gene Full Name	protein inhibitor of activated STAT, 1
Background	This gene encodes a member of the mammalian PIAS [protein inhibitor of activated STAT-1 (signal transducer and activator of transcription-1)] family. This member contains a putative zinc-binding motif and a highly acidic region. It inhibits STAT1-mediated gene activation and the DNA binding activity, binds to Gu protein/RNA helicase II/DEAD box polypeptide 21, and interacts with androgen receptor (AR). It functions in testis as a nuclear receptor transcriptional coregulator and may have a role in AR initiation and maintenance of spermatogenesis. [provided by RefSeq, Jul 2008]
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 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. Sumoylates PML (at'Lys-65' and 'Lys-160') and PML-RAR and promotes their ubiquitin-mediated degradation. PIAS1-mediated sumoylation of PML promotes its interaction with CSNK2A1/CK2 which in turn promotes PML phosphorylation and degradation (By similarity). Enhances the sumoylation of MTA1 and may participate in its paralog-selective sumoylation. Plays a dynamic role in adipogenesis by promoting the SUMOylation and degradation of CEBPB (By similarity). [UniProt]
Cellular Localization	Nucleus speckle. Nucleus, PML body. Note=Interaction with CSRP2 may induce a partial redistribution along the cytoskeleton. [UniProt]
Calculated MW	72 kDa
PTM	Sumoylated. 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. [UniProt]

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