345834
Genistein, Soybean
A cell-permeable, reversible, substrate competitive inhibitor of protein tyrosine kinases, including autophosphorylation of epidermal growth factor receptor kinase (IC₅₀ = 2.6 µM).
Synonym(s):
Genistein, Soybean, 4ʹ,5,7-Trihydroxyisoflavone
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About This Item
Empirical Formula (Hill Notation):
C15H10O5
CAS Number:
Molecular Weight:
270.24
MDL number:
UNSPSC Code:
12352200
NACRES:
NA.77
Quality Level
description
Merck USA index - 14, 4391
assay
≥95% (HPLC)
form
solid
manufacturer/tradename
Calbiochem®
storage condition
OK to freeze
protect from light
color
white
solubility
DMSO: 200 mg/mL
shipped in
ambient
storage temp.
−20°C
General description
A cell-permeable, reversible, substrate competitive inhibitor of protein tyrosine kinases, including autophosphorylation of epidermal growth factor receptor kinase (IC50 = 2.6 µM). The inhibition is competitive with respect to ATP and non-competitive with respect to the phosphate acceptor. Inhibits tumor cell proliferation and induces tumor cell differentiation. Inhibits exogenous substrate phosphorylation by EGFR kinase and pp60v-src with similar potencies (IC50 = 20-25 µM). Has only a trivial effect on PKC and PKA (IC50 >350 µM). Produces cell cycle arrest and apoptosis in Jurkat T-leukemia cells. Prevents anti-CD3 monoclonal antibody-induced thymic apoptosis. Also inhibits topoisomerase II activity in vitro. Blocks oxidative DNA damage in vitro.
Biochem/physiol Actions
Cell permeable: yes
Primary Target
EGFR kinase
EGFR kinase
Product does not compete with ATP.
Reversible: yes
Target IC50: 2.6 µM against autophosphorylation of epidermal growth factor receptor kinase
Warning
Toxicity: Standard Handling (A)
Other Notes
Constantinou, A., and Huberman, E. 1995. Proc. Soc. Exp. Biol. Med. 208, 109.
Wei, H., et al. 1995. Proc. Soc. Exp. Biol. Med. 208, 124.
Wei, H., et al. 1995. Carcinogenesis17, 73.
Kobayashi, S., et al. 1994. J. Biol. Chem.269, 9011.
Migita, K., et al. 1994. J. Immunol.153, 3457.
Spinozzi, F., et al. 1994. Leuk. Res.18, 431.
Dhar, A., et al. 1990. Mol. Pharmacol.37, 519.
Hill, T.D., et al. 1990. Science248, 1660.
Dean, N.M., et al. 1989. Biochem. Biophys. Res. Commun.165, 795.
Akiyama, T., et al. 1987. J. Biol. Chem.262, 5592.
Wei, H., et al. 1995. Proc. Soc. Exp. Biol. Med. 208, 124.
Wei, H., et al. 1995. Carcinogenesis17, 73.
Kobayashi, S., et al. 1994. J. Biol. Chem.269, 9011.
Migita, K., et al. 1994. J. Immunol.153, 3457.
Spinozzi, F., et al. 1994. Leuk. Res.18, 431.
Dhar, A., et al. 1990. Mol. Pharmacol.37, 519.
Hill, T.D., et al. 1990. Science248, 1660.
Dean, N.M., et al. 1989. Biochem. Biophys. Res. Commun.165, 795.
Akiyama, T., et al. 1987. J. Biol. Chem.262, 5592.
Legal Information
CALBIOCHEM is a registered trademark of Merck KGaA, Darmstadt, Germany
signalword
Warning
hcodes
Hazard Classifications
Acute Tox. 4 Oral
Storage Class
11 - Combustible Solids
wgk_germany
WGK 3
flash_point_f
Not applicable
flash_point_c
Not applicable
Certificates of Analysis (COA)
Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.
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