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Sriram Subramaniam, Ph.D.

Senior Investigator

Laboratory of Cell Biology

NCI/CCR

Building 50, Room 4306
Bethesda, MD 20892-8008

301-594-2062

subramas@mail.nih.gov

Research Topics

Three-Dimensional Electron Microscopy at Molecular Resolution

For a more detailed description of our research program, please visit our High Resolution Electron Microscopy website at http://electron.nci.nih.gov.

The long-term mission of our research program is to obtain an integrated, quantitative understanding of cells and viruses at molecular resolution. We take an interdisciplinary approach to this problem by combining novel technologies for three-dimensional (3D) imaging with computational and cell biological tools. Our research efforts are presently focused on three areas: (1) determination of the structure and mechanisms underlying neutralization and cellular entry of HIV, (2) the development of automated, high-throughput workflows for structure determination of small, dynamic molecular complexes, and (3) the development of novel technologies for 3D imaging of cells and tissues, with particular emphasis on methods for understanding and diagnosing structural signatures of signal transduction and disease progression.

Biography

Dr. Sriram Subramaniam received his Ph.D. in Physical Chemistry from Stanford University and completed postdoctoral training in the Departments of Chemistry and Biology at M.I.T. He is chief of the Biophysics Section in the Laboratory of Cell Biology at the Center for Cancer Research, National Cancer Institute. He holds a visiting faculty appointment at the Johns Hopkins University School of Medicine. His current work is focused on the development of advanced technologies for imaging macromolecular assemblies using 3D electron microscopy, and their application to address fundamental problems in HIV/AIDS and cancer research.

Selected Publications

  1. Bartesaghi A, Merk A, Banerjee S, Matthies D, Wu X, Milne JL, Subramaniam S. Electron microscopy. 2.2 Å resolution cryo-EM structure of β-galactosidase in complex with a cell-permeant inhibitor. Science. 2015;348(6239):1147-51.
  2. Frank GA, Narayan K, Bess JW Jr, Del Prete GQ, Wu X, Moran A, Hartnell LM, Earl LA, Lifson JD, Subramaniam S. Maturation of the HIV-1 core by a non-diffusional phase transition. Nat Commun. 2015;6:5854.
  3. Meyerson JR, Kumar J, Chittori S, Rao P, Pierson J, Bartesaghi A, Mayer ML, Subramaniam S. Structural mechanism of glutamate receptor activation and desensitization. Nature. 2014;514(7522):328-34.
  4. Do T, Murphy G, Earl LA, Del Prete GQ, Grandinetti G, Li GH, Estes JD, Rao P, Trubey CM, Thomas J, Spector J, Bliss D, Nath A, Lifson JD, Subramaniam S. Three-dimensional imaging of HIV-1 virological synapses reveals membrane architectures involved in virus transmission. J Virol. 2014;88(18):10327-39.
  5. Bartesaghi A, Merk A, Borgnia MJ, Milne JL, Subramaniam S. Prefusion structure of trimeric HIV-1 envelope glycoprotein determined by cryo-electron microscopy. Nat Struct Mol Biol. 2013;20(12):1352-7.
This page was last updated on June 16th, 2015