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345834

Sigma-Aldrich

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

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

InChI

1S/C15H10O5/c16-9-3-1-8(2-4-9)11-7-20-13-6-10(17)5-12(18)14(13)15(11)19/h1-7,16-18H

InChI key

TZBJGXHYKVUXJN-UHFFFAOYSA-N

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. Has only a trivial effect on the activity of PKA and PKC (IC50 >350 µM). Inhibits tumor cell proliferation and induces tumor cell differentiation. Produces cell cycle arrest and apoptosis in Jurkat T-leukemia cells. However, it prevents anti-CD3 monoclonal antibody-induced thymic apoptosis. Also inhibits topoisomerase II activity in vitro.
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
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.

Legal Information

CALBIOCHEM is a registered trademark of Merck KGaA, Darmstadt, Germany

Pictograms

Exclamation mark

Signal Word

Warning

Hazard Statements

Precautionary Statements

Hazard Classifications

Acute Tox. 4 Oral

Storage Class Code

11 - Combustible Solids

WGK

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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Aggregation by immune complexes of receptors specific for the Fc region of IgG results in their internalisation and disposal by trafficking to lysosomes. We show here that internalisation of FcgammaRI by IFN-gamma treated U937 cells following receptor aggregation by cross-linking

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