Abstract
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-tagll 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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