• Product name
    Calcium Assay Kit (Luminometric)
    See all Calcium kits
  • Sample type
    Adherent cells, Suspension cells
  • Assay type
  • Product overview

    Calcium flux assays are preferred methods in drug discovery for screening G protein coupled receptors (GPCR). This kit uses a highly calcium-sensitive and membrane-permeable coelenterazine analog as a calcium indicator for the cells that are transfected with apoaequorin gene. Aequorin is a calcium-sensitive bioluminescent protein from the jellyfish Aequorea victoria that has been used extensively as a calcium indicator in cells. The aequorin complex emits blue light when bound to calcium ions. The luminescence intensity is directly proportional to the Ca2+ concentration.

    ab112114 is much more sensitive than the fluorescence-based calcium assays. This kit provides an optimized assay method for monitoring the G-protein-coupled receptors and calcium channels. The assay can be performed in a convenient 96-well or 384-well microtiter-plate format and easily adapted to automation. It might be useful for monitoring the intracellular calcium mobilization in a specified compartment given that recombinant apoaequorin proteins can now be targeted to specific organelles, cells and tissues. ab112114 is more sensitive than the fluorescent calcium assays.

    Visit our FAQs page for tips and troubleshooting.

  • Notes

    ab112114 should be stored desiccated.



  • ATP Dose Response on CHO-aeq cells. CHO cells stably transfected with apoaequorin were seeded overnight at 50,000 cells/100 µL/well in a white wall/clear bottom 96-well plate. The growth medium was removed and the cells were incubated with 100 µL of dye-loading solution using ab112114 for 3 hours at room temperature and protected from light. ATP (25 µL/well) was added to achieve the final indicated concentrations. The EC50 of ATP is about 0.8 µM.



ab112114 has not yet been referenced specifically in any publications.

Customer reviews and Q&As

Calcium is essential for all living organisms.And because Calcium is an earth alkali metal but not a species specific protein, it should work with rat samples, too.

You are welcome. We are assuming the recovery period will be sufficient to allow demonstration of differences among treatments or sample types. You might consider comparing samples +/- the recovery period.

I just found a paper that discusses...

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Thank you for contacting us.

The developer of the assay had two suggestions which may be useful. The aim in each case is to allow the cells to recover from the removal from the culture plates. The second may not be acceptable if you have a s...

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Thank you for your email. Unfortunately this kit is not suitable for tissues. The assay is aequorin based, and you will need to transfect the aequorin gene into the cells before the experiment. Aequorin binds Ca2+ and emits blue light, th...

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