4.8 Article

Recognition Imaging and Highly Ordered Molecular Templating of Bacterial S-Layer Nanoarrays Containing Affinity-Tags

期刊

NANO LETTERS
卷 8, 期 12, 页码 4312-4319

出版社

AMER CHEMICAL SOC
DOI: 10.1021/nl802092c

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资金

  1. FP6 EC-STREP [NASSAP 13523]
  2. U.S. Air Force Office of Scientific Research (AFOSR) [FA9550-0703 13]
  3. European Union [RGP0053]

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Functional nanoarrays were fabricated using the chimeric bacterial cell surface layer (S-layer) protein rSbpA fused with the affinity tag Strep-tagII and characterized using various atomic force microscopy (AFM) techniques in aqueous environment. The accessibility of Strep-tagII was verified by single-molecule force spectroscopy studies employing Strep-Tactin as specific ligand. Simultaneous topography and recognition imaging (TREC) of the nanoarray yielded high resolution maps of the Strep-tagII binding sites with a positional accuracy of 1.5 nm. The nanoarrays were used as template for constructing highly ordered molecular binding blocks.

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