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A431 (Human) Whole Cell Lysate (ab7909)


  • Product nameA431 (Human) Whole Cell Lysate
    See all A431 lysates
  • General notesCell line: A431 (Human epidermoid carcinoma).
    Growth media: DMEM and 10% FBS.
  • Tested applicationsWBmore details


  • FormLiquid
  • Storage instructionsShipped at 4°C. Upon delivery aliquot and store at -20°C or -80°C. Avoid repeated freeze / thaw cycles.
  • Storage bufferpH: 6.80
    Constituent: 5% Beta mercaptoethanol
  • Concentration information loading...
  • PurityWhole Cell Lysate
  • Lysate notesA431 cell lysate was prepared by homogenization in modified RIPA buffer (150 mM sodium chloride, 50 mM Tris-HCl, pH 7.4, 1 mM ethylenediaminetetraacetic acid, 1 mM phenylmethylsulfonyl flouride, 1% Triton X-100, 1% sodium deoxycholic acid, 0.1% sodium dodecylsulfate, 5 µg/ml of aprotinin, 5 µg/ml of leupeptin). Cell debris was removed by centrifugation. Protein concentration was determined with Bio-Rad protein assay. The cell lysate was boiled for 5 minutes in 1 x SDS sample buffer (50 mM Tris-HCl pH 6.8, 12.5% glycerol, 1% sodium dodecylsulfate, 0.01% bromophenol blue) containing 5% b-mercaptoethanol.
  • Research areas
  • BackgroundA431 cells are a positive control for EGFR as they express high levels of EGFR. They also used for cell cycle studies and can be stimulated with EGF to stimulate EGFR and are therefore a very useful model to study EGFR downstream signalling cascades eg shc, src, MAPK.


Our Abpromise guarantee covers the use of ab7909 in the following tested applications.

The application notes include recommended starting dilutions; optimal dilutions/concentrations should be determined by the end user.

Application Abreviews Notes
WB Use at an assay dependent concentration. Ready to load on SDS-PAGE for Western blotting, 20 µg per lane is recommended for mini gel.

References for A431 (Human) Whole Cell Lysate (ab7909)

ab7909 has not yet been referenced specifically in any publications.

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Thank you for confirming these details and for your cooperation. The details provided enable us to closely monitor the quality of our products. I have issued a free of charge control lysate (ab30257) as goodwill with the order number. To check th...

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Thank you for taking the time to look into this and for your response.

We have not tested this in HepG2 cells and the positive control recommendations were based on the literature. I thank you for your recommendation with this and have remov...

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Thank you for contacting us. I was able to find the reference that you spoke of on the phone (ShanLX, HardyMP Endocrinology.1992 Sep;131(3):1107-14. (PMID:1505454, During my research for this question ...

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Thank you for your enquiry. For immunohistochemistry paraffin-embedded sections, human breast carcinoma was used in as control. For Western Blot QC, lysates were prepared from A431 cells, untreated or calyculin A-treated. A431 cells are a human ...

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