@article{Langhorst2006-06Accum-18072,
  year={2006},
  doi={10.1007/s00418-005-0136-3},
  title={Accumulation of FlAsH/Lumio Green in active mitochondria can be reversed by β-mercaptoethanol for specific staining of tetracysteine-tagged proteins},
  number={6},
  volume={125},
  issn={0948-6143},
  journal={Histochemistry and Cell Biology},
  pages={743--747},
  author={Langhorst, Matthias F. and Genisyuerek, Selda and Stürmer, Claudia}
}

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    <dcterms:title>Accumulation of FlAsH/Lumio Green in active mitochondria can be reversed by β-mercaptoethanol for specific staining of tetracysteine-tagged proteins</dcterms:title>
    <dcterms:available rdf:datatype="http://www.w3.org/2001/XMLSchema#dateTime">2012-01-25T13:13:49Z</dcterms:available>
    <dc:contributor>Genisyuerek, Selda</dc:contributor>
    <dc:contributor>Stürmer, Claudia</dc:contributor>
    <dc:creator>Langhorst, Matthias F.</dc:creator>
    <dc:creator>Genisyuerek, Selda</dc:creator>
    <dc:creator>Stürmer, Claudia</dc:creator>
    <dc:contributor>Langhorst, Matthias F.</dc:contributor>
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    <dc:language>eng</dc:language>
    <dc:rights>terms-of-use</dc:rights>
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    <dcterms:issued>2006-06</dcterms:issued>
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    <dc:date rdf:datatype="http://www.w3.org/2001/XMLSchema#dateTime">2012-01-25T13:13:49Z</dc:date>
    <dcterms:abstract xml:lang="eng">Recent advances in the field of small molecule labels for live cell imaging promise to overcome some of the limitations set by the size of fluorescent proteins. We tested the tetracysteine–biarsenical labeling system in live cell fluorescence microscopy of reggie-1/flotillin-2 in HeLa and N2a cells. In both cell types, the biarsenical staining reagent FlAsH/Lumio Green accumulated in active mitochondria and led to mitochondrial swelling. This is indicative of toxic side effects caused by arsenic, which should be considered when this labeling system is to be used in live cell imaging. Mitochondrial accumulation of FlAsH/Lumio Green was reversed by addition of low concentrations of thiol-containing reagents during labeling and a subsequent high stringency thiol wash. Both ethanedithiol and β-mercaptoethanol proved to be effective. We therefore established a staining protocol using β-mercaptoethanol as thiol binding site competitor resulting in a specific staining of tetracysteine-tagged reggie-1/flotillin-2 of adequate signal to noise ratio, so that the more toxic and inconvenient ethanedithiol could be avoided. Furthermore, we show that staining efficiency was greatly enhanced by introducing a second tetracysteine sequence in tandem.</dcterms:abstract>
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    <dcterms:bibliographicCitation>First publ. in: Histochemistry and cell biology ; 125 (2006), 3. - S. 743-747</dcterms:bibliographicCitation>
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