Expression of fluorescently tagged connexins: a novel approach to rescue function of oligomeric DsRed‐tagged proteins1

FEBS Letters

Lauf, Undine¹  Lopez, Patricia¹  Falk, Matthias M¹ 

[1] Department of Cell Biology, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, CA 92037, USA

关键词: Green fluorescent protein;    Red fluorescent protein;    Gap junction;    Oligomeric membrane protein;    Aggregation of protein;    Protein chimera;   

DOI  :  10.1016/S0014-5793(01)02462-0

学科分类：生物化学/生物物理

来源: John Wiley & Sons Ltd.

【 摘 要 】

A novel, brilliantly red fluorescent protein, DsRed has become available recently opening up a wide variety of experimental opportunities for double labeling and fluorescence resonance electron transfer experiments in combination with green fluorescent protein (GFP). Unlike in the case of GFP, proteins tagged with DsRed were often found to aggregate within the cell. Here we report a simple method that allows rescuing the function of an oligomeric protein tagged with DsRed. We demonstrate the feasibility of this approach on the subunit proteins of an oligomeric membrane channel, gap junction connexins. Additionally, DsRed fluorescence was easily detected 12–16 h post transfection, much earlier than previously reported, and could readily be differentiated from co-expressed GFP. Thus, this approach can eliminate the major drawbacks of this highly attractive autofluorescent protein.

【 授权许可】

Unknown