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. 2019 Jun 6;14(6):e0217897. doi: 10.1371/journal.pone.0217897

Fig 1. Conjugation of Nsp1FG to a QCM-sensor.

Fig 1

(A) Chemical conjugation of Nsp1FG to a silica surface. (B) Representative sensorgram of Nsp1FG conjugation. Changes in resonance frequency (ΔF5) (bottom, blue) and energy dissipation (ΔD5) (top, red) for the 5th overtone recorded in real time. Nsp1FG conjugation step, wash, passivation with mPEG, and beta-mercaptoethanol treatment are indicated. (C) Viscoelastic modeling of the Nsp1FG surface at different density estimates (top: viscosity, middle: shear modulus, bottom: layer thickness).