, Volume 18, Issue 5, pp 493–496 | Cite as

Analyse eines unkonventionellen Vitamin-Transporters

Wissenschaft · Methoden FRET in lebenden Bakterien


Förster resonance energy transfer (FRET) identifies the co-localization of fluorescent macromolecules on a nanometer scale. FRET between nonidentical and identical fluorophores is called HeteroFRET or HomoFRET, respectively. We applied FRET techniques to analyze the oligomeric state of the core component (BioY) of a bacterial biotin transporter. BioY was fused to fluorescent proteins suitable for Hetero- and HomoFRET analyses. Spectrometric and imaging experiments with living cells strongly support a model with oligomers of BioY as the functional state of the core unit.


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Copyright information

© Springer-Verlag 2012

Authors and Affiliations

  1. 1.Institut für Biologie/Molekulare BiophysikHu BerlinBerlinGermany
  2. 2.Institut für Biologie/MikrobiologieHu BerlinBerlinGermany
  3. 3.Institut für Biologie/Molekulare BiophysikHumboldt-Universität zu BerlinBerlinGermany
  4. 4.Institut für Biologie/MikrobiologieHumboldt-Universität zu BerlinBerlinGermany

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