Curriculum Vitae (17-Jul-2008)

Personal information

Education

Professional experience

Selected honors

Professional organizations

Educational contributions

Postdoctoral researchers

Graduate students

Other students and researchers

Member of thesis committees for 24 other students.

Teaching

Professional contributions

Administrative responsibilities

Community service

University committees

National committees

Editorial positions

Manuscript reviews

Grant reviews

Research contributions

Current research

Our research uses the methods of theoretical and computational science to study the physical phenomena underlying the behavior of biological systems. Such studies offer insight into the basic mechanisms of biomolecular dynamics and function and provide a foundation for new tools and algorithms to complement experimental research.

Understanding biomolecular solvation. The properties of biomolecules are strongly affected by their surrounding aqueous and ionic environment. Our research in solvation focuses on the development and application of accurate continuum solvent models for biomolecules. First, we continue to develop the APBS and PDB2PQR software packages which implement Poisson-Boltzmann electrostatics and various nonpolar models of continuum solvation. Second, we are working on improved continuum models for both polar and nonpolar solvation. Finally, we are developing multiscale treatments of solvation with particular emphasis on the influence of ionic species on nucleic acid structure and dynamics.

Allostery and energy flow in biomolecules. Proteins communicate information (e.g., ligand binding, etc.) over large distances through mechanisms that are often poorly understood. We are employing biophysical simulation techniques to study the molecular foundations of allosteric communication in protein systems. Initial work is focused on the NikR protein, a regulatory protein found in several bacteria species, and thrombin, an essential component in the blood clotting cascade.

Small molecule effects on biomembrane electrostatics and mechanics. We are interested in the ability of small molecules to perturb the electrical and mechanical properties of biological membranes. The mechanism of this perturbation is not well understood but has a significant impact on biomembrane functions, including membrane channel function and cellular electrophysiology. Initial studies on salicylate, a metabolite of aspirin, have revealed an interesting mechanism for its effects on membrane electrostatics and mechanics. We are now broadening these studies to examine other amphiphilic molecules known to affect membrane capacitance, bending modulus, and electrostatic potential.

Nanotechnology-based cancer therapeutics. We are part of the Siteman Cancer Center for Nanotechnology Excellence effort to develop nanoparticle-based technology for the delivery of therapeutic and diagnostic chemicals in a selective and efficient manner. One aspect of our research in this area is the development of databases, vocabularies, and ontologies to describe the physical and functional properties for a variety of nanoparticle platforms. A second area of research is the development of multiscale simulations for understanding the mechanism of nanoemulsion function and interaction with lipid membranes.

Research grants

Research articles

  1. Feaster SR, Lee K, Baker N, Hui DY, Quinn DM. Molecular recognition by cholesterol esterase of active site ligands: structure-reactivity effects for inhibition by aryl carbamates and subsequent carbamylenzyme turnover. Biochemistry, 35, 16723-16734, 1996. (http://dx.doi.org/10.1021/bi961677v)
  2. Baker NA, McCammon JA. Non-Boltzmann rate distributions in stochastically gated reactions. J Phys Chem B, 103, 615-617, 1999. (http://dx.doi.org/10.1021/jp984151o)
  3. Baker NA, Helms V, McCammon JA. Dynamical properties of fasciculin-2. Proteins, 36, 447-453, 1999. (http://tinyurl.com/3vtyh)
  4. Baker NA, Hunenberger PH, McCammon JA. Polarization around an ion in a dielectric continuum with truncated electrostatic interactions. J Chem Phys, 110, 10679-10692, 1999. (http://dx.doi.org/10.1063/1.479013)
  5. Malany S, Baker N, Verweyst M, Medhekar R, Quinn DM, Velan B, Kronman C, Shafferman A. Theoretical and experimental investigations of electrostatic effects on acetylcholinesterase catalysis and inhibition. Chem-Biol Interact, 120, 99-110, 1999. (http://dx.doi.org/10.1016/S0009-2797(99)00018-6)
  6. Baker N, Holst M, Wang F. Adaptive multilevel finite element solution of the Poisson-Boltzmann equation II: refinement schemes based on solvent accessible surfaces. J Comput Chem, 21, 1343-1352, 2000. (http://tinyurl.com/3n92c)
  7. Holst M, Baker N, Wang F. Adaptive multilevel finite element solution of the Poisson-Boltzmann equation I: algorithms and examples . J Comput Chem, 21, 1319-1342, 2000. (http://tinyurl.com/3uzq4)
  8. Quinn DM, Feaster SR, Nair HK, Baker NA, Radic D, Taylor P. Delineation and decomposition of energies involved in quaternary ammonium binding in the active site of acetylcholinesterase. J Am Chem Soc, 122, 2975-2980, 2000. (http://dx.doi.org/10.1021/ja9933588)
  9. Baker NA, Sept D, Holst MJ, McCammon JA. The adaptive multilevel finite element solution of the Poisson-Boltzmann equation on massively parallel computers . IBM J Res Devel, 45, 427-438, 2001. (http://dx.doi.org/10.1147/rd.453.0427)
  10. Baker NA, Sept D, Joseph S, Holst MJ, McCammon JA. Electrostatics of nanosystems: application to microtubules and the ribosome. Proc Natl Acad Sci USA, 98, 10037-10041, 2001. (http://dx.doi.org/10.1073/pnas.181342398)
  11. Lin JH, Baker NA, McCammon JA. Bridging implicit and explicit solvent approaches for membrane electrostatics. Biophys J, 83, 1374-1379, 2002. (http://www.biophysj.org/cgi/content/abstract/83/3/1374)
  12. Ma C, Baker NA, Joseph S, McCammon JA. Binding of aminoglycoside antibiotics to the small ribosomal subunit: a continuum electrostatics investigation. J Am Chem Soc, 124, 1438-1442, 2002. (http://tinyurl.com/48l3bp)
  13. Sept D, Baker NA, McCammon JA. The physical basis of microtubule stability. Protein Sci, 12, 2257-2261, 2003. (http://www.proteinscience.org/cgi/content/abstract/12/10/2257)
  14. Tai K, Bond SD, MacMillan HR, Baker NA, Holst MJ, McCammon JA. Finite element simulations of acetylcholine diffusion in neuromuscular junctions. Biophys J, 84, 2234-2241, 2003. (http://www.biophysj.org/cgi/content/abstract/84/4/2234)
  15. Dolinsky TJ, Nielsen JE, McCammon JA, Baker NA. PDB2PQR: an automated pipeline for the setup, execution, and analysis of Poisson-Boltzmann electrostatics calculations. Nucleic Acids Res, 32, W665-W667, 2004. (http://tinyurl.com/4kcyc)
  16. Dolinsky TJ, Karplus K, Burgers PMJ, Baker NA. SPrCY: comparison of structural predictions in the S. cerevisiae genome. Bioinformatics, 20, 2312-2314, 2004. (http://dx.doi.org/10.1093/bioinformatics/bth223)
  17. Song Y, Zhang Y, Shen T, Bajaj CL, McCammon JA, Baker NA. Finite element solution of the steady-state Smoluchowksi equation for rate constant calculations. Biophys J, 86, 2017-2029, 2004. (http://www.biophysj.org/cgi/content/abstract/86/4/2017)
  18. Song Y, Zhang Y, Bajaj C, Baker NA. Continuum diffusion reaction rate calculations of wild type and mutant mouse acetylcholinesterase: adaptive finite element analysis. Biophys J, 87, 1558-1566, 2004. (http://www.biophysj.org/cgi/content/abstract/87/3/1558)
  19. Vitalis A, Baker NA, McCammon JA. ISIM: a program for grand canonical Monte Carlo simulations of the ionic environment of biomolecules . Mol Sim, 30, 45-61, 2004. (http://tinyurl.com/5986l)
  20. Wagoner J, Baker NA. Solvation forces on biomolecular structures: a comparison of explicit solvent and Poisson-Boltzmann models. J Comput Chem, 25, 1623-1629, 2004. (http://dx.doi.org/10.1002/jcc.20089)
  21. Zhang D, Konecny R, Baker NA, McCammon JA. Electrostatic interaction between RNA and protein capsid in CCMV simulated by a coarse-grain RNA model and a Monte Carlo approach. Biopolymers, 75, 325-337, 2004. (http://dx.doi.org/10.1002/bip.20120)
  22. Showalter SA, Baker NA, Tang C, Hall KB. Iron responsive element RNA flexibility described by NMR and isotropic reorientational eigenmode dynamics. J Biomol NMR, 32, 179-193, 2005. (http://dx.doi.org/10.1007/s10858-005-7948-2)
  23. Song Y, Guallar V, Baker NA. Molecular dynamics simulations of salicylate effects on the micro- and mesoscopic properties of a dipalmitoylphosphatidylcholine bilayer. Biochemistry, 44, 13425-13438, 2005. (http://dx.doi.org/10.1021/bi0506829)
  24. Zhang D, Suen J, Zhang Y, Song Y, Radic Z, Taylor P, Holst MJ, Bajaj C, Baker NA, McCammon JA. Tetrameric mouse acetylcholinesterase: continuum diffusion rate calculations by solving the steady-state Smoluchowski equation using finite element methods. Biophys J, 88, 1659-1666, 2005. (http://dx.doi.org/10.1529/biophysj.104.053850)
  25. Konecny R, Trylska J, Tama F, Zhang D, Baker NA, Brooks CL III, McCammon JA. Electrostatic properties of cowpea chlorotic mottle virus and cucumber mosaic virus capsids. Biopolymers, 82, 106-120, 2006. (http://dx.doi.org/10.1002/bip.20409)
  26. Wagoner JA, Baker NA. Assessing implicit models for nonpolar mean solvation forces: the importance of dispersion and volume terms. Proc Natl Acad Sci USA, 103, 8331-8336, 2006. (http://dx.doi.org/10.1073/pnas.0600118103)
  27. Wong CJ, Rice RL, Baker NA, Ju T, Lohman TM. Probing 3'-ssDNA loop formation in E. coli RecBCD/RecBC-DNA complexes using non-natural DNA: a model for "Chi" recognition complexes. J Mol Biol, 362, 26-43, 2006. (http://dx.doi.org/10.1016/j.jmb.2006.07.016)
  28. Zhang X, Bajaj CL, Kwon B, Dolinsky TJ, Nielsen JE, Baker NA. Application of new multi-resolution methods for the comparison of biomolecular electrostatic properties in the absence of global structural similarity. Multiscale Model Sim, 5, 1196-1213, 2006. (http://dx.doi.org/10.1137/050647670)
  29. Cerutti DS, Baker NA, McCammon JA. Solvent Reaction Field Potential inside an Uncharged Globular Protein: A Bridge between Implicit and Explicit Solvent Models?. J Chem Phys, 127, 155101, 2007. (http://dx.doi.org/10.1063/1.2771171)
  30. Cheng Y, Suen JK, Zhang D, Bond SD, Zhang Y, Song Y, Baker NA, Bajaj CL, Holst MJ, McCammon JA. Finite element analysis of the time-dependent Smoluchowski equation for acetylcholinesterase reaction rate calculations. Biophys J, 92, 3397-406, 2007. (http://dx.doi.org/10.1529/biophysj.106.102533)
  31. Dolinsky TJ, Czodrowski P, Li H, Nielsen JE, Jensen JH, Klebe G, Baker NA. PDB2PQR: Expanding and upgrading automated preparation of biomolecular structures for molecular simulations. Nucleic Acids Res, 35, W522-5, 2007. (http://dx.doi.org/10.1093/nar/gkm276)
  32. Schnieders MJ, Baker NA, Ren P, Ponder JW. Polarizable Atomic Multipole Solutes in a Poisson-Boltzmann Continuum. J Chem Phys, 126, 124114, 2007. (http://dx.doi.org/10.1063/1.2714528)
  33. Swanson JMJ, Wagoner JA, Baker NA, McCammon JA. Optimizing the Poisson dielectric boundary with explicit solvent forces and energies: lessons learned with atom-centered dielectric functions. J Chem Theory Comput, 3, 170-183, 2007. (http://dx.doi.org/10.1021/ct600216k)
  34. Bradley MJ, Chivers PT, Baker NA. Molecular dynamics simulation of the Escherichia coli NikR protein: Equilibrium conformational fluctuations reveal inter-domain allosteric communication pathways. Journal of Molecular Biology, 378, 1155-1173, 2008. (http://dx.doi.org/10.1016/j.jmb.2008.03.010)
  35. Lee S-J, Song Y, Baker NA. Molecular dynamics simulations of asymmetric NaCl and KCl solutions separated by phosphatidylcholine bilayers: potential drops and structural changes induced by strong Na+-lipid interactions and finite size effects. Biophysical Journal, 94, 3565-76, 2008. (http://dx.doi.org/10.1529/biophysj.107.116335)
  36. Dong F, Wagoner JA, Baker NA. Assessing the performance of implicit solvation models at a nucleic acid surface. Phys Chem Chem Phys, in press. (http://dx.doi.org/10.1039/b807384h)

Review articles

  1. Baker NA. Poisson-Boltzmann methods for biomolecular electrostatics. Methods in Enzymology, 383, 94-118, 2004. (http://dx.doi.org/10.1016/S0076-6879(04)83005-2)
  2. Baker NA. Improving implicit solvent simulations: a Poisson-centric view. Curr Opin Struct Biol, 15, 137-143, 2005. (http://dx.doi.org/10.1016/j.sbi.2005.02.001)
  3. Dong F, Olsen B, Baker NA. Computational Methods for Biomolecular Electrostatics. Methods in Cell Biology: Biophysical Tools for Biologists, 84, 843-870, 2008. (http://dx.doi.org/10.1016/S0091-679X(07)84026-X)

Book sections

  1. Medhekar R, Baker N, Kearney W, Sando K, Quinn DM. Low-barrier hydrogen bond in the catalytic triad of serine esterases. In: Doctor BP, Quinn DM, Rotundo R, Taylor P, Eds. Structure and function of cholinesterases and related proteins. Plenum Press: New York (1998) .
  2. Quinn DM, Medhekar R, Baker N. Ester hydrolysis. In: Poulter CD, Eds. Comprehensive natural products chemistry: enzymes, enzyme mechanisms, proteins, and aspects of NO chemistry . Elsevier Science: Oxford (1999) .
  3. Baker N, Tai K, Henchman R, Sept D, Elcock A, Holst M, McCammon JA. Mathematics and molecular neurobiology. In: Gan HH, Schlick T, Eds. Computational Methods for Macromolecules: Challenges and Applications. Springer-Verlag: New York (2002) .
  4. Baker NA, McCammon JA. Electrostatic interactions. In: Weissig H, Bourne PE, Eds. Structural Bioinformatics. John Wiley and Sons: New York (2003) .
  5. Baker NA. Biomolecular applications of Poisson-Boltzmann methods . In: Lipkowitz KB, Larter R, Cundari TR, Eds. Reviews in Computational Chemistry. John Wiley and Sons: Hoboken, NJ (2005) .
  6. Baker NA, Bashford D, Case DA. Implicit solvent electrostatics in biomolecular simulation. In: Leimkuhler B, Chipot C, Elber R, Laaksonen A, Mark A, Schlick T, Schutte C, Skeel R, Eds. New Algorithms for Macromolecular Simulation. Springer-Verlag: Berlin (2006) .

Selected invited presentations (last 2 years; of 54 total)

  1. Baker NA. Biocomplexity Institute Seminar, University of Indiana. Jan-2006, Talk.
  2. Baker NA. Theoretical and Computational Biophysics Seminar, University of Illinois Urbana-Champaign. Jan-2006, Talk.
  3. Baker NA. Bioinformatics Institute, Agency for Science, Technology, and Research (A*STAR Biopolis), Singapore. Apr-2006, Visiting scientist lecture series.
  4. Baker NA. Computer Science and Engineering Seminar Series, University of Notre Dame. Apr-2006, Talk.
  5. Baker NA. National Biomedical Computation Resource Summer Institute. Aug-2006, Workshop.
  6. Wagoner JA, Dong F, Baker NA*. Gibbs Conference on Biothermodynamics. Oct-2006, Talk.
  7. Baker NA. Future of Biomolecular Simulations: From Ab Initio to Nano-molecular Machines, National Center for Computational Sciences, Oak Ridge National Lab. Dec-2006, Talk.
  8. Olsen B, Song Y, Lee SJ, Tieleman DP, Baker NA*. American Chemical Society National Meeting. Mar-2007, Talk.
  9. Dong F, Wagoner JA, Baker NA*. American Chemical Society National Meeting. Mar-2007, Talk.
  10. Thomas D, Jones P, Pappu R, Sept D, Baker N*. Trans-NIH Nano Task Force Meeting. May-2007, Talk.
  11. Baker NA. Biophysical Evenings, Washington University in St. Louis. May-2007, Talk.
  12. Baker NA. Seminar, Integrated DNA Technologies. Jul-2007, Talk.
  13. Baker NA. National Biomedical Computation Resource Summer Institute Mini-Symposium. Jul-2007, Talk.
  14. Baker NA. Mathematics of DNA Structure, Function, and Interactions, Institute for Mathematics and its Applications. Sep-2007, Talk.
  15. Baker NA* et al. National Cancer Institute Nanotechnology Alliance Meeting. Oct-2007, Talk.
  16. Baker NA. Seminar, University of Kansas. Nov-2007, Talk.
  17. Baker NA. Quantitative Biology and Modeling/Dept. of Mathematics Seminar, Michigan State University. Dec-2007, Talk.
  18. Baker NA. Protein Folding Workshop, Institute for Mathematics and its Applications. Jan-2008, Talk.
  19. Baker NA. Mechanical Engineering Seminar, Washington University. Feb-2008, Talk.
  20. Baker NA. Seminar, Conway Institute, University College Dublin. Mar-2008, Talk.
  21. Wagoner J, Dong F, Cerutti D, McCammon JA, Baker N*. American Chemical Society National Meeting. Apr-2008, Talk.
  22. Bradley M, Rice R, Chivers P, Di Cera E, Baker N*. American Chemical Society National Meeting. Apr-2008, Talk.
  23. Wagoner J, Dong F, Baker NA*. Biopolymers Gordon Research Conference. Jun-2008, Talk.
  24. Thomas DG, Jones PL, Pappu RV, Baker NA*. caBIG Annual Meeting. Jun-2008, Talk.
  25. Wagoner J, Dong F, Baker NA*. Protein Electrostatics Workshop, Telluride Science Research Center. Jul-2008, Talk.
  26. Baker NA. Seminar, Department of Biological Science, Florida State University. Jul-2008, Talk.

Selected contributed presentations (last 2 years; of 35 total)

  1. Wagoner JA*, Baker NA. Biophysical Society Meeting. Feb-2006, Poster.
  2. Song Y*, Baker NA. Biophysical Society Meeting. Feb-2006, Poster.
  3. Bradley M*, Chivers P, Baker N. Gibbs Conference on Biothermodynamics. Oct-2006, Poster.
  4. Dong F*, Wagoner J, Baker NA. Gibbs Conference on Biothermodynamics. Oct-2006, Poster.
  5. Olsen B*, Lee SJ*, Song Y, Baker NA. Gibbs Conference on Biothermodynamics. Oct-2006, Poster.
  6. Thomas D, Sim H, Jones P, Pappu R, Sept D, Baker N*. Nanotechnology and the Life Sciences Symposium. Mar-2007, Talk and poster.
  7. Lee SJ, Song Y, Baker NA*. Biophysical Society Meeting. Mar-2007, Poster.
  8. Rice RL*, Baker NA. Biophysical Society Meeting. Mar-2007, Poster.
  9. Thomas D, Sim H, Jones P, Sept D, Pappu R, Baker NA*. National Cancer Institute Nanotechnology Alliance Meeting. Oct-2007, Talk.
  10. Li P-C*, Bradley MJ, Baker NA, Sept D. Gibbs Conference on Biothermodynamics. Oct-2007, Poster.
  11. Bradley M*, Chivers P, Baker N. Gibbs Conference on Biothermodynamics. Oct-2007, Poster.
  12. Olsen B*, Song Y, Tieleman DP, Baker N. Gibbs Conference on Biothermodynamics. Oct-2007, Poster.
  13. Hahn-Dantona EA*, Fritts MJ, Patri AK, Baker NA, Thomas DG, Hartel FW. Nanobiology Think Tank Meeting. May-2008, Poster.
  14. Paik D* et al. caBIG Annual Meeting. Jun-2008, Poster.
  15. Paik D* et al. Radiological Society of North America 94th Scientific Sessions. Nov-2008, Poster.