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Gene. 1996;173(1 Spec No):107-11.

Application of novel vectors for GFP-tagging of proteins to study microtubule-associated proteins.

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Friedrich Miescher Institut, Basel, Switzerland.


We describe the construction of pBact-NGFP and pBact-CGFP, two expression vectors that incorporate green fluorescent protein (GFP) as a fluorescent tag at the N- or C terminus of the produced protein. When transfected into recipient cells, GFP-tagged proteins can be visualised in the living cells using standard fluorescence microscopy techniques. Using these expression vectors, we have produced GFP-tagged versions of the neuronal microtubule-associated proteins (MAP), MAP2c and Tau34, in a number of different cell types. Both GFP-MAP2c and GFP-Tau34 were fluorescent and retained their ability to bind to microtubules. The pBact-NGFP and pBact-CGFP expression vectors represent a fast and convenient way to produce fluorescently tagged polypeptides of selected sequences encoding whole proteins or fragments for the analysis of function and dynamic events in living cells.

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