Journal
ANALYTICAL BIOCHEMISTRY
Volume 376, Issue 1, Pages 151-153Publisher
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.ab.2008.01.034
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In a proof of concept study, we created a small focused fluorescent hexapeptide library onto 14 multiplexed barcoded sets of silica particles to probe the substrate recognition specificity of West Nile and Dengue virus proteases. A flow cytometric analysis demonstrated that the optical signature of each bead population remained distinguishable throughout the solid-phase peptide synthesis and proteolytic assay. As expected, both proteases displayed a narrow specificity for lysine and arginine residues in the P-1, and P-2 substrate positions. This open-ended platform enables the fast and simultaneous identification of peptide substrates and is applicable to other proteases. (c) 2008 Elsevier Inc. All rights reserved.
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