Source: Recombinant human kindey produced in E. coli

Purity: > 90% by SDS-PAGE, apparent Mr ~ 41-kDa.

Supplied: 1 μg in 50 μl 50 mM Tris-HCl pH 7.0 buffer containing 14 mM β-mercaptoethanol, 1 mM benzamidine, 0.1 mM phenylmethanesulfonyl fluoride, 1 mM EDTA, 0.1% Brij-35 and 10% glycerol. Maintain preparations in aliquots at -70° C. Avoid repeated thawing.

Synonyms: Taf-1a; Protein Phosphatase 2A Inhibitor Protein 2β; I2βPP2A;

Background: I2PP2A(β), originally termed Taf-1a, inhibits protein phosphatase 2A (PP2A, GLO130-GLO132) potently with ki ~ 0.1 - 0.5 nM with myelin basic protein (MBP, GLO126-010MGLO126-025), histone H1 and other substrates but not with casein. It stimulates PP1 (GLO133-001) and regulates histone binding to DNA, transcriptional activity and chromatin condensation.


  1. Li M, Makkinje A, Damuni Z.  (1996) "The myeloid leukemia-associated protein SET is a potent inhibitor of protein phosphatase 2A"  J Biol Chem 271, 11059-11062
  2. Nagata, K. et al (1995) "Replication factor encoded by a putative oncogene, set, associated with myeloid leukemogenesis" Proc Natl Acad Sci U S A 92, 4279-4283

Related ProductsI2PP2A  ♦  I2PP2A GST (1 μg)  ♦  I2PP2A GST (5 μg)  ♦  I1PP2A  ♦  I1PP2A GST (1 μg)  ♦  I1PP2A GST (5 μg)  ♦  PP2A1 ♦  PP2A2 ♦  PP2AC ♦  PP1C ♦ MBP (10 mg)  ♦ MBP (25 mg)

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