Yes! Aequorin can be stably transfected in cell lines. The apo-enzyme apoaequorin is a 21 kD protein, which requires a hydrophobic prosthetic group, coelenterazine, to be converted to aequorin, the active form of the enzyme. Aequorin stable cell lines have traditionally been generated by transfection and co-expression of aequorin with a specific target of interest. See the attached. Article A novel rapid and reproducible flow cytometric method for op...