Articles by David Kim in JoVE
Determination of Molecular Structures of HIV Envelope Glycoproteins using Cryo-Electron Tomography and Automated Sub-tomogram Averaging Joel R. Meyerson1,2, Tommi A. White1, Donald Bliss3, Amy Moran3, Alberto Bartesaghi1, Mario J. Borgnia1, M. Jason V. de la Cruz1, David Schauder1, Lisa M. Hartnell1, Rachna Nandwani1,4, Moez Dawood5, Brianna Kim6, Jun Hong Kim7, John Sununu8, Lisa Yang9, Siddhant Bhatia10, Carolyn Subramaniam1, Darrell E. Hurt11, Laurent Gaudreault12, Sriram Subramaniam1 1Laboratory of Cell Biology, Center for Cancer Research, National Cancer Institute, National Institutes of Health, 2The Medical Research Council Mitochondrial Biology Unit, University of Cambridge, 3National Library of Medicine, National Institutes of Health, 4Massachusetts Institute of Technology, 5William Fremd High School, 6University of Virginia, 7Duke University, 8Yale University, 9University of Notre Dame, 10Washington University in St. Louis, 11Bioinformatics and Computational Biosciences Branch, National Institute of Allergy and Infectious Diseases, National Institutes of Health, 12Thomas Jefferson High School for Science and Technology The protocol describes a high-throughput approach to determining structures of membrane proteins using cryo-electron tomography and 3D image processing. It covers the details of specimen preparation, data collection, data processing and interpretation, and concludes with the production of a representative target for the approach, the HIV-1 Envelope glycoprotein. These computational procedures are designed in a way that enables researchers and students to work remotely and contribute to data processing and structural analysis.
Three-dimensional Particle Tracking Velocimetry for Turbulence Applications: Case of a Jet Flow Jin-Tae Kim1, David Kim1, Alex Liberzon2, Leonardo P. Chamorro1,3 1Department of Mechanical Science and Engineering, University of Illinois at Urbana-Champaign, 2School of Mechanical Engineering, Tel Aviv University, 3Department of Civil and Environmental Engineering, University of Illinois at Urbana-Champaign A three-dimensional particle tracking velocimetry (3D-PTV) system based on a high-speed camera with a four-view splitter is described here. The technique is applied to a jet flow from a circular pipe in the vicinity of ten diameters downstream at Reynolds number Re ≈ 7,000.