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| Alexander D. MacKerell Jr. | |
|---|---|
| Name | Alexander D. MacKerell Jr. |
| Birth date | 1955 |
| Nationality | American |
| Fields | Computational chemistry; Biophysics; Molecular modeling |
| Institutions | University of Maryland; University of North Carolina; Harvard University; Columbia University |
| Alma mater | University of New Brunswick; Massachusetts Institute of Technology; Johns Hopkins University |
| Known for | CHARMM; molecular mechanics force fields; biomolecular simulations |
Alexander D. MacKerell Jr. is an American computational chemist and biophysicist recognized for leading the development of the Chemistry at HARvard Macromolecular Mechanics (CHARMM) force field and related molecular modeling methods. He has held academic appointments and collaborated broadly with researchers at University of Maryland, University of North Carolina at Chapel Hill, Harvard University, Johns Hopkins University, and industrial laboratories, contributing to advances used across National Institutes of Health, National Science Foundation, and pharmaceutical research. His work integrates theoretical chemistry, statistical mechanics, and computer simulation to model proteins, nucleic acids, lipids, and small molecules relevant to Biochemistry, Structural Biology, Drug design, and Molecular dynamics.
MacKerell earned undergraduate and graduate degrees at institutions including the University of New Brunswick and the Massachusetts Institute of Technology before completing doctoral studies at Johns Hopkins University. During his formative years he trained in theoretical and computational chemistry alongside groups associated with Harvard University and collaborated with scientists connected to centers such as the National Institutes of Health and the Howard Hughes Medical Institute. His education emphasized quantum chemistry, statistical mechanics, and numerical methods that later informed parameterization strategies used in biomolecular force fields employed by researchers at Columbia University, Yale University, and Princeton University.
MacKerell has held faculty and research positions at major research universities and national centers including University of Maryland and University of North Carolina at Chapel Hill, and has been a visiting scholar at Harvard University and collaborators with teams at Lawrence Berkeley National Laboratory and Argonne National Laboratory. He has led interdisciplinary projects funded by the National Science Foundation and the National Institutes of Health, partnering with investigators from Stanford University, California Institute of Technology, Massachusetts General Hospital, and industry groups at Pfizer and Merck. His laboratory trained students and postdocs who later joined faculties at University of California, Berkeley, University of Cambridge, ETH Zurich, and Max Planck Institute research programs.
MacKerell is best known for directing the development and continual refinement of the CHARMM force field, a parametrization framework for molecular mechanics widely applied by practitioners at Brookhaven National Laboratory, Los Alamos National Laboratory, and academic centers such as University of Illinois Urbana–Champaign and University of Texas Southwestern Medical Center. Under his leadership CHARMM evolved to incorporate polarizable models, improved dihedral parameters, and enhanced small-molecule compatibility used in studies by teams at GlaxoSmithKline, AstraZeneca, and translational groups at Scripps Research. CHARMM development under MacKerell interfaced with software ecosystems including NAMD, GROMACS, AMBER, and visualization tools like VMD and Chimera, enabling cross-platform molecular dynamics workflows adopted in Pharmaceutical research and structural interpretation of data from X-ray crystallography, Nuclear Magnetic Resonance, and Cryo-Electron Microscopy.
MacKerell's methodological contributions include systematic parameter optimization protocols rooted in quantum chemical reference data from methods such as Hartree–Fock and Density Functional Theory calculations performed by groups at Argonne National Laboratory and Oak Ridge National Laboratory. He advanced strategies for torsion profile fitting, charge assignment, and validation against experimental observables measured at facilities like Brookhaven National Laboratory and National Synchrotron Light Source II. His work on lipid and membrane models influenced simulations of biomembrane systems studied by researchers at Scripps Research, University of California, San Diego, and Monash University. He also contributed to hybrid quantum mechanics/molecular mechanics (QM/MM) approaches utilized by teams at University of Pennsylvania and Imperial College London for enzyme mechanism studies and drug metabolism modeling.
MacKerell's contributions have been recognized by awards and invitations from professional organizations such as the American Chemical Society, the Biophysical Society, and committees supported by the National Institutes of Health and the National Science Foundation. He has been an invited speaker at conferences organized by Gordon Research Conferences, International Conference on Computational Chemistry, and symposia at institutions including Cold Spring Harbor Laboratory and European Molecular Biology Laboratory. His leadership in force field development has been acknowledged by collaborative prizes and named lectureships within the computational chemistry and biophysics communities.
MacKerell authored and coauthored numerous influential publications describing the CHARMM force field, parameter sets for proteins, nucleic acids, lipids, and small molecules, and methodological papers on parameterization and validation protocols cited by researchers at Harvard Medical School, University of Oxford, University of Tokyo, Peking University, and Johns Hopkins University. His papers are foundational references in studies of protein folding, membrane protein simulation, ligand binding, and computational drug design pursued at institutions including Roche, Novartis, Baylor College of Medicine, and University of Toronto. The CHARMM community and associated software pipelines continue to shape research agendas across Biochemistry, Medicinal Chemistry, and structural interpretation efforts at national and international laboratories.
Category:Computational chemists Category:Biophysicists Category:American scientists