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Diversity visualization by endonuclease: A rapid assay to monitor diverse nucleotide libraries.

MPG-Autoren

Lim,  T. S.
Max Planck Society;

http://pubman.mpdl.mpg.de/cone/persons/resource/persons50536

Schutze,  T.
Dept. of Vertebrate Genomics (Head: Hans Lehrach), Max Planck Institute for Molecular Genetics, Max Planck Society;

http://pubman.mpdl.mpg.de/cone/persons/resource/persons50409

Lehrach,  H.
Dept. of Vertebrate Genomics (Head: Hans Lehrach), Max Planck Institute for Molecular Genetics, Max Planck Society;

http://pubman.mpdl.mpg.de/cone/persons/resource/persons50167

Glökler,  J.
Dept. of Vertebrate Genomics (Head: Hans Lehrach), Max Planck Institute for Molecular Genetics, Max Planck Society;

http://pubman.mpdl.mpg.de/cone/persons/resource/persons50390

Konthur,  Z.
In vitro Ligand Screening (Zoltán Konthur), Dept. of Vertebrate Genomics (Head: Hans Lehrach), Max Planck Institute for Molecular Genetics, Max Planck Society;

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Zitation

Lim, T. S., Schutze, T., Lehrach, H., Glökler, J., & Konthur, Z. (2011). Diversity visualization by endonuclease: A rapid assay to monitor diverse nucleotide libraries. Analytical Biochemestry, 411(1), 16-21. doi:10.1016/j.ab.2010.12.024.


Zitierlink: http://hdl.handle.net/11858/00-001M-0000-0010-77B6-F
Zusammenfassung
Many experiments require a fast and cost-effective method to monitor nucleic acid sequence diversity. Here we describe a method called diversity visualization by endonuclease (DiVE) that allows rapid visualization of sequence diversity of polymerase chain reaction (PCR) products based on DNA hybridization kinetics coupled with the activity of a single-strand specific nuclease. The assay involves only a limited number of steps and can be performed in less than 4h, including the initial PCR. After PCR, the homoduplex double-stranded DNA (dsDNA) is denatured and reannealed under stringent conditions. During the reannealing process, incubation with S1 nuclease removes single-stranded loops of formed heteroduplexes and the resulting digest is visualized on agarose gel. The sequence diversity is inversely proportional to the band intensities of S1 nuclease surviving dsDNA molecules of expected size. As an example, we employed DiVE to monitor the diversity of panning rounds from a single-framework, semisynthetic single-chain antibody fragment (scFv) phage display library. The results are in good agreement with the observed decrease in diversity in phage display panning rounds toward the selection of monoclonal scFv. We conclude that the DiVE assay allows rapid and cost-effective monitoring of diversities of various nucleotide libraries and proves to be particularly suitable for scaffold-based randomized libraries.