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  • Title: Use of fluorescent Ca2+ dyes with green fluorescent protein and its variants: problems and solutions.
    Author: Bolsover S, Ibrahim O, O'luanaigh N, Williams H, Cockcroft S.
    Journal: Biochem J; 2001 Jun 01; 356(Pt 2):345-52. PubMed ID: 11368760.
    Abstract:
    We have studied the degree to which fluorescent Ca(2+) indicator dyes, and green fluorescent protein and its variants, can be used together. We find that the most commonly used fluorescent protein, enhanced green fluorescent protein (EGFP), seriously contaminates fura 2 signals. We suggest two alternative combinations for which there is no detectable contamination of the Ca(2+) indicator signal by the fluorescent protein. Blue fluorescent protein can be used with the Ca(2+) indicator Fura Red; EGFP can be used with the Ca(2+) indicator X-Rhod 1. The use of these combinations will permit the accurate measurement of Ca(2+) signals in cells transfected with fluorescent proteins.
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