A431 Membrane Lysate

A431 (Human Epidermoid Carcinoma) cell membrane protein lysate was prepared by isolating the membrane protein from whole tissue homogenates using a proprietary technique. The A431 (Human Epidermoid Carcinoma) cell was frozen in liquid nitrogen immediately after excision and then stored at -70°C. The membrane protein is provided in a buffer including HEPES (pH 7.9), MgCl2, KCl, EDTA, Sucrose, Glycerol, sodium deoxycholate, NP-40, and a cocktail of protease inhibitors. For quality control purposes, the isolated A431 (Human Epidermoid Carcinoma) cell membrane protein pattern on SDS-PAGE gel is shown to be consistent for each lot by visualization with coomassie blue staining. The isolated A431 (Human Epidermoid Carcinoma) cell membrane protein is then Western analyzed by either GAPDH or β-actin antibody to confirm there is no signal or very weak signal.