HIPK4, GST-tag

Catalog #: 40111
Size: 10 µg
Species: Human
Host Species: Sf9 insect cells
MW: 110 kDa
Genbank #: NM_144685
Tag(s): N-terminal GST-tag
a.a: full length
HIPK4 or homeodomain interacting protein kinase 4 is a serine/threonine protein kinase that can act as a co-repressor of transcription factors (1). HIPK4 has been shown to phosphorylate the human p53 protein at serine 9, both in vitro and in vivo which is important for p53 mediated transcriptional repression. RT-PCR analysis showed moderate expression of HIPK4 in lung and white adipose tissue and weak expression in brain and liver. HIPK4 expression has also been observed in various cancer cell lines (2).
Human HIPK4 (homeodomain-interacting protein kinase 4), GenBank Accession No. NM_144685, full length, with N-terminal GST tag, MW = 110 kDa, expressed in Sf9 insect cells via a baculovirus expression system.
Specific Activity:
202 pmol/min/µg
Assay Conditions:
5 mM MOPS, 2.5 mM β-glycerophosphate, 5 mM MgCl2, 1 mM EGTA, 0.4 mM EDTA, 0.05 mM DTT, 2 mM ATP. Incubate HIPK4 with 0.25 mg/ml Myelin basic Protein (substrate) and 50 ?M [33P]-ATP at 30°C for 15 minutes, then spot reaction on phosphocellulose paper, fix in 1% phosphoric acid, and assay with a scintillation counter.
50 mM Tris-HCl, pH 7.5, 150 mM NaCl, 0.25 mM DTT, 0.1 mM EGTA, 0.1 mM EDTA, 0.1 mM PMSF, 25% glycerol.
Aqueous buffer solution
Storage / Stability:

>6 months at -80°C.

Useful for the study of enzyme kinetics, screening inhibitors, and selectivity profiling.
1. Arai, S. et al: Novel homeodomain-interacting protein kinase family member, HIPK4, phosphorylates human p53 at serine 9. FEBS Lett. 2007;11;581(29):5649-57.
2. Di Stefano, V. et al: Homeodomain-interacting protein kinase-2 activity and p53 phosphorylation are critical events for cisplatin-mediated apoptosis. Exp. Cell. Res. 2004;15;293(2):311-20.
Avoid freeze/thaw cycles
Scientific Category:
Product Type:
Recombinant Protein
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