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K-252a (CAS 99533-80-9)

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Alternate Names:
SF 2370; K252a
Application:
K-252a is A cell permeable protein kinase inhibitor
CAS Number:
99533-80-9
Purity:
≥97%
Molecular Weight:
467.49
Molecular Formula:
C27H21N3O5
For Research Use Only. Not Intended for Diagnostic or Therapeutic Use.
* Refer to Certificate of Analysis for lot specific data.

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K-252a is a metabolite that can be found in the culture broth of Nocardiopsis sp.. Experiments have shown that at high concentrations this compound is an ATP-competitive inhibitor of cyclic nucleotide-dependent protein kinases. More specifically, K-252a has been found to be a potent inhibitor of PKA, PKC (protein kinase C) activity (IC50 = 32.9 nM), Ser/Thr kinase, CaMKII, MYLK, and Met. K-252a is able to bind neuroblastoma, promoting survival of primary neuronal cultures and induction of neurite outgrowth in SH-SY5Y neuroblastoma cells, along with phosphorylation of tyrosine kinase. Additionally, K-252a also has demonstrated the ability to block neuronal differentiation of rat pheochromocytoma pC12 cells induced by nerve growth factor (NGF) at high concentrations. At very low concentrations (10fM-10nM), K-252a has been noted to prolong the survival of septal, hippocampal, and cortical neurons deprived of glucose. K-252a is an inhibitor of Cdc2, Cdc25, cGKI, PHK, Trk A and PKN.


K-252a (CAS 99533-80-9) References

  1. K252a is a selective inhibitor of the tyrosine protein kinase activity of the trk family of oncogenes and neurotrophin receptors.  |  Tapley, P., et al. 1992. Oncogene. 7: 371-81. PMID: 1312698
  2. Effect of K-252a and abscisic acid on the efflux of citrate from soybean roots.  |  Shen, H., et al. 2004. J Exp Bot. 55: 663-71. PMID: 14754917
  3. Potent and preferential inhibition of Ca2+/calmodulin-dependent protein kinase II by K252a and its derivative, KT5926.  |  Hashimoto, Y., et al. 1991. Biochem Biophys Res Commun. 181: 423-9. PMID: 1659814
  4. K-252a inhibits nerve growth factor-induced trk proto-oncogene tyrosine phosphorylation and kinase activity.  |  Berg, MM., et al. 1992. J Biol Chem. 267: 13-6. PMID: 1730579
  5. K-252a inhibits the response of tomato cells to fungal elicitors in vivo and their microsomal protein kinase in vitro.  |  Grosskopf, DG., et al. 1990. FEBS Lett. 275: 177-80. PMID: 2261987
  6. K-252a, a potent protein kinase inhibitor, blocks nerve growth factor-induced neurite outgrowth and changes in the phosphorylation of proteins in PC12h cells.  |  Hashimoto, S. 1988. J Cell Biol. 107: 1531-9. PMID: 2844830
  7. K-252a, a novel microbial product, inhibits smooth muscle myosin light chain kinase.  |  Nakanishi, S., et al. 1988. J Biol Chem. 263: 6215-9. PMID: 2966151
  8. K-252 compounds, novel and potent inhibitors of protein kinase C and cyclic nucleotide-dependent protein kinases.  |  Kase, H., et al. 1987. Biochem Biophys Res Commun. 142: 436-40. PMID: 3028414
  9. K-252a: a specific inhibitor of the action of nerve growth factor on PC 12 cells.  |  Koizumi, S., et al. 1988. J Neurosci. 8: 715-21. PMID: 3339434
  10. K-252a, a potent inhibitor of protein kinase C from microbial origin.  |  Kase, H., et al. 1986. J Antibiot (Tokyo). 39: 1059-65. PMID: 3759657
  11. Staurosporine, K-252a, and K-252b stabilize calcium homeostasis and promote survival of CNS neurons in the absence of glucose.  |  Cheng, B., et al. 1994. J Neurochem. 62: 1319-29. PMID: 7510777
  12. K-252a induces tyrosine phosphorylation of the focal adhesion kinase and neurite outgrowth in human neuroblastoma SH-SY5Y cells.  |  Maroney, AC., et al. 1995. J Neurochem. 64: 540-9. PMID: 7830046
  13. K-252a promotes survival and choline acetyltransferase activity in striatal and basal forebrain neuronal cultures.  |  Glicksman, MA., et al. 1995. J Neurochem. 64: 1502-12. PMID: 7891076

Ordering Information

Product NameCatalog #UNITPriceQtyFAVORITES

K-252a, 100 µg

sc-200517
100 µg
$129.00

K-252a, 500 µg

sc-200517B
500 µg
$214.00

K-252a, 1 mg

sc-200517A
1 mg
$498.00