Western blot shows lysates of MCF‑7 human breast cancer cell line, HepG2 human hepatocellular carcinoma cell line, HeLa human cervical epithelial carcinoma cell line, and HEK293 human embryonic kidney cell line. PVDF membrane was probed with 1 µg/mL of Sheep Anti-Human PIAS2 Antigen Affinity-purified Polyclonal Antibody (Catalog # AF4768) followed by HRP-conjugated Anti-Sheep IgG Secondary Antibody (Catalog # HAF016). A specific band was detected for PIAS2 at approximately 63-70 kDa (as indicated). This experiment was conducted under reducing conditions and using Immunoblot Buffer Group 1.
Preparation and Storage
Reconstitute at 0.2 mg/mL in sterile PBS.
The product is shipped at ambient temperature. Upon receipt, store it immediately at the temperature recommended below. *Small pack size (SP) is shipped with polar packs. Upon receipt, store it immediately at -20 to -70 °C
Stability & Storage
Use a manual defrost freezer and avoid repeated freeze-thaw cycles.
12 months from date of receipt, -20 to -70 °C as supplied.
1 month, 2 to 8 °C under sterile conditions after reconstitution.
6 months, -20 to -70 °C under sterile conditions after reconstitution.
PIAS2 (Protein inhibitor of activated STAT2; also DIP, MIZ1 and PIASx-beta ) is a 45‑70 kDa member of the PIAS family of molecules. In primary cells and tissues it is expressed in T and NK cells, and in testis where it likely regulates spermatogenesis. However, it is widely expressed in cultured cell lines. PIAS2 is known to inhibit STAT4-mediated gene activation, and to interact with inactive ELK‑1, promoting its activation via HDAC2 dissociation and desumoylation. Human PIAS2 is 621 amino acids (aa) in length. It contains a SAP domain (aa 11‑45), a zinc-finger region (aa 331‑408), a SUMO-binding motif (aa 467‑472) and an NLS (aa 484‑492). There are multiple splice variants. PIAS2x-beta /ARIP3 shows a 22 aa substitution for aa 551‑621, while PIAS-NY shows a 12 aa substitution for aa 1‑8, followed by a truncation after Gly401. Two others show a four aa substitution for aa 504‑621, and an alternate start site at Met10. Over aa 1‑550, human PIAS2 shares 98% aa identity with mouse PIAS2.
Protein Inhibitor of Activated STAT 2
Entrez Gene IDs:
9063 (Human); 17344 (Mouse)
Androgen receptor-interacting protein 3; ARIP3; DAB2-interacting protein; DIP; E3 SUMO-protein ligase PIAS2; MGC102682; miz; MIZ1; Msx-interacting zinc finger protein; Msx-interacting-zinc finger; PIAS-NY protein; PIASx alpha; PIASX; PIASX-ALPHA; PIASX-BETA; Protein inhibitor of activated STAT x; protein inhibitor of activated STAT, 2; Protein inhibitor of activated STAT2; SIZ2; zinc finger, MIZ-type containing 4; ZMIZ4
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