Quantitative and label-free technique for measuring protease activity and inhibition using a microfluidic cantilever array.
Quantitative and label-free technique for measuring protease activity and inhibition using a microfluidic cantilever array.
复制标题
使用微流体悬臂阵列测量蛋白酶活性和抑制的定量和无标记技术。
DOI:
10.1021/nl8019455
复制
发表时间:
2008-09
期刊:
影响因子:
10.8
通讯作者:
Majumdar A
中科院分区:
文献类型:
--
作者:
Raorane DA;Lim MD;Chen FF;Craik CS;Majumdar A
We report the use of a SiNx based gold coated microcantilever array to quantitatively measure the activity and inhibition of a model protease immobilized on its surface. Trypsin was covalently bound to the gold surface of the microcantilever using a synthetic spacer, and the remaining exposed silicon nitride surface was passivated with silanated polyethylene glycol. The nanoscale cantilever motions induced by trypsin during substrate turnover were quantitatively measured using an optical laser-deflection technique. These microcantilever deflections directly correlated with the degree of protease turnover of excess synthetic fibronectin substrate (KM = 0.58 × 10-6 M). Inhibition of surface-immobilized trypsin by soybean trypsin inhibitor (SBTI) was also observed using this system.
登录
查看更多内容
影响因子:
7.4
作者:
MURATSUGU, M;OHTA, F;IKEDA, H
通讯作者:
IKEDA, H
影响因子:
46.9
作者:
de Wildt, RMT;Mundy, CR;Tomlinson, IM
通讯作者:
Tomlinson, IM
影响因子:
56.9
作者:
SANO, T;SMITH, CL;CANTOR, CR
通讯作者:
CANTOR, CR
影响因子:
56.9
作者:
Fritz, J;Baller, MK;Gimzewski, JK
通讯作者:
Gimzewski, JK
影响因子:
2.2
作者:
CHAPMAN, V;FLETCHER, SM;JONES, MN
通讯作者:
JONES, MN