Femtomole Mixer for Microsecond Kinetic Studies of Protein Folding

Overview

Journal Anal Chem

Specialty Chemistry

Date 2004 Dec 15

PMID 15595857

Citations 38

Authors

David E Hertzog

Xavier Michalet

Marcus Jager

Xiangxu Kong

Juan G Santiago

Shimon Weiss

Olgica Bakajin

Affiliations

Soon will be listed here.

Abstract

We have developed a microfluidic mixer for studying protein folding and other reactions with a mixing time of 8 mus and sample consumption of femtomoles. This device enables us to access conformational changes under conditions far from equilibrium and at previously inaccessible time scales. In this paper, we discuss the design and optimization of the mixer using modeling of convective diffusion phenomena and a characterization of the mixer performance using microparticle image velocimetry, dye quenching, and Forster resonance energy-transfer (FRET) measurements of single-stranded DNA. We also demonstrate the feasibility of measuring fast protein folding kinetics using FRET with acyl-CoA binding protein.

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