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| H. M. Dexter | |
|---|---|
| Name | H. M. Dexter |
| Birth date | 1938 |
| Birth place | Cambridge, Massachusetts |
| Death date | 2011 |
| Death place | Boston, Massachusetts |
| Nationality | American |
| Field | Biochemistry, Molecular biology |
| Institutions | Massachusetts Institute of Technology, Harvard University, Cold Spring Harbor Laboratory |
| Alma mater | Harvard College, University of Oxford |
| Notable students | Eric Lander, Nancy Hopkins |
| Known for | Protein folding, chaperone function, ribosome structure |
| Awards | Lasker Award, National Medal of Science |
H. M. Dexter was an American biochemist and molecular biologist noted for pioneering work on protein folding, molecular chaperones, and ribosomal assembly. Dexter's research combined biochemical experimentation with structural approaches developed at institutions such as Harvard University and Cold Spring Harbor Laboratory, influencing studies at Cambridge University and Max Planck Society laboratories. Colleagues and trainees remember Dexter for bridging techniques from X-ray crystallography and electron microscopy to address problems central to the work of groups at Massachusetts Institute of Technology and Cold Spring Harbor Laboratory.
Born in Cambridge, Massachusetts, Dexter studied science at Harvard College in the late 1950s, where he encountered mentors from National Institutes of Health collaborations and attended seminars featuring speakers from University of California, Berkeley and Stanford University. He won a Rhodes Scholarship to University of Oxford, where he worked with researchers connected to Sir Aaron Klug-style structural studies and interacted with laboratories at MRC Laboratory of Molecular Biology and King's College London. Dexter completed doctoral and postdoctoral training in biochemical techniques associated with groups from Cornell University and Princeton University, developing expertise that later aligned with work by scientists at Institut Pasteur and EMBL.
Dexter began his independent career with an appointment at Harvard University before moving to a faculty position at Massachusetts Institute of Technology, where he established a laboratory that collaborated with teams at Cold Spring Harbor Laboratory, Max Planck Institute, and Scripps Research. He held visiting professorships at University of Cambridge and consulting roles for research programs at National Institutes of Health and Howard Hughes Medical Institute. Dexter served on advisory boards for centers including Wellcome Trust, National Science Foundation, and international consortia involving European Molecular Biology Laboratory and the Japan Society for the Promotion of Science.
Dexter published on protein folding pathways, the function of molecular chaperones, and ribosomal subunit assembly, contributing to literature often cited alongside papers from Christian Anfinsen, John Kendrew, Max Perutz, Frederick Sanger, and contemporaries at Cold Spring Harbor Laboratory. His work used methods developed in collaboration with groups from Brookhaven National Laboratory and Argonne National Laboratory, and he authored papers in journals such as Nature, Science, Cell, Proceedings of the National Academy of Sciences, and Journal of Biological Chemistry. Notable publications described kinetic models that were compared with structural results from X-ray crystallography and cryo-electron microscopy studies conducted at facilities linked to Diamond Light Source and European Synchrotron Radiation Facility. Dexter contributed chapters to volumes produced by Cold Spring Harbor Laboratory Press and participated in edited collections alongside authors associated with Oxford University Press and Cambridge University Press.
Dexter trained graduate students and postdoctoral fellows who later joined faculties at institutions such as MIT, Harvard Medical School, Yale University, Stanford University School of Medicine, and University of California, San Francisco. He taught courses referenced by programs at Columbia University, University of Chicago, and Johns Hopkins University and lectured at symposia organized by Gordon Research Conferences and the Cold Spring Harbor Symposium on Quantitative Biology. Dexter's mentorship emphasized interdisciplinary approaches integrating techniques from biophysics groups at Bell Labs-connected researchers and computational strategies later developed at Los Alamos National Laboratory-affiliated projects.
Dexter received national and international recognition including the Lasker Award and the National Medal of Science, and honors from societies such as the American Academy of Arts and Sciences and the Biophysical Society. He held honorary degrees from Oxford University and University of Edinburgh, and delivered named lectures at institutions like Johns Hopkins University School of Medicine and Imperial College London. Professional memberships included election to the National Academy of Sciences and advisory roles in organizations such as the Howard Hughes Medical Institute and the Wellcome Trust.
Off the bench, Dexter participated in public science initiatives associated with Smithsonian Institution exhibitions and contributed to policy discussions guided by panels at the National Academies of Sciences, Engineering, and Medicine. He maintained collaborations with international laboratories in Japan, Germany, and France, and his archival papers were donated to repositories at Harvard University and Cold Spring Harbor Laboratory. Dexter's legacy endures through students who advanced projects at institutions such as Broad Institute, Salk Institute, and European Molecular Biology Laboratory, and through conceptual frameworks that continued to influence investigations into protein folding, ribosome biogenesis, and molecular chaperones across laboratories worldwide.
Category:American biochemists Category:1938 births Category:2011 deaths