In Silico Discovery and Validation of Neuropeptide-Y-Binding Peptides for Sensors
Xingqing Xiao, Zhifeng Kuang, B. J. Burke, Yaroslav Chushak, Barry L. Farmer, Peter A. Mirau, Rajesh R. Naik, Carol K. Hall
Journal of Physical Chemistry B
Wearable sensors for human health, performance, and state monitoring, which have a linear response to the binding of biomarkers found in sweat, saliva, or urine, are of current interest for many applications. A critical part of any device is a biological recognition element (BRE) that is able to bind a biomarker at the surface of a sensor with a high affinity and selectivity to produce a measurable signal response. In this study, we discover and compare 12-mer peptides that bind to neuropeptide Y (NPY), a stress and human health biomarker, using independent and complimentary experimental and computational approaches. The affinities of the NPY-binding peptides discovered by both methods are equivalent and below the micromolar level, which makes them suitable for application in sensors. The in silico design protocol for peptide-based BREs is low cost, highly efficient, and simple, suggesting its utility for discovering peptide binders to a variety of biomarker targets.
Circular dichroism, Secondary structure, Ligand binding, Protein folding, Sensors, Materials, Biochemistry