E3641 Sigma

Epidermal Growth Factor Receptor human

buffered aqueous glycerol solution, 5,000-30,000 units/mg protein (Lowry)

DOWNLOAD MSDS (PDF)

Synonym: EGFR

Description

Preparation Note

Affinity purified from human carcinoma A431 cells

Unit Definition

One unit will catalyze the incorporation of 1 pmol of phosphate from γ-32P-ATP into poly (Glu,Tyr), 4:1 at 30 °C per min.

Physical form

Solution in 50% glycerol, containing 50 mM HEPES, pH 7.6, 150 mM NaCl, 0.1% Triton and 1 mM dithiothreitol

Biochem/physiol Actions

EGF exerts its actions by binding to the EGF receptor (EGFR), a 170 kDa glycoprotein having EGF-activated protein tyrosine kinase activity. Even in the absence of EGF-like ligands, EGFR can participate in cellular responses elicited by several other stimuli. High levels of EGFR are expressed in approximately one third of human epithelial tumors, and in the cancers of the bladder, breast or lung that have poor clinical prognosis, hence the interest in targeting EGFR.

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