Projects include: use of thermal melt assays and enzyme activity assays to identify possible intracellular targets
of anti-Plasmodium compounds; development of enzyme assays suitable for high-throughput screening of chemical libraries;
development of TDRtargets.org, a database devoted to identification and prioritization of possible drug targets.
Studied the mechanisms by which Methylobacterium
AM1 can switch between one-carbon substrates (e.g., methanol) and multi-carbon substrates
(e.g., succinate). Used H-2 and C-14 labels to measure fluxes through one-carbon transfer pathways in wild-type cells and various genetically engineered strains. Flux measurements were combined with enzyme activity assays, metabolite assays, oxygen
consumption measurements, and mathematical modeling to identify possible control points in these pathways.
Tested mechanistic hypotheses concerning the control of glycolytic and oxidative fluxes in vivo. Collected and analyzed NMR spectroscopy data to measure changes in intracellular metabolite levels during and after exercise. Calculated rates of lactate production and ATP turnover from changes in pH, [phosphocreatine], and [inorganic phosphate].
Conducted studies of sphinganine kinase activity in corn and bean tissue. Performed differential centrifugation of tissue samples, labeling of substrates with radioactive markers, and in vitro assays of enzyme activity.
Co-instructor of an introductory biology course for engineering students
(10 to 25 students per quarter).
Responsible for selected lectures, labs, literature discussions, homework assignments, and exams.
G. J. Crowther and R. M. Price. In defense of misconceptions. CBE Life Sci. Educ.: in press.
G. J. Crowther, M. L. Booker, M. He, T. Li, S. Raverdy, J. F. Novelli, P. He, N. R. G. Dale, A. M. Fife, R. H. Barker Jr, M. L. Kramer, W. C. Van Voorhis, C. K. S. Carlow, and M.-W. Wang. Cofactor-independent phosphoglycerate mutase from nematodes has limited druggability,
as revealed by two high-throughput screens. PLoS Negl. Trop. Dis.: in press.
W. A. Guiguemde, A. A. Shelat, D. Bouck, S. Duffy, G. J. Crowther, P. H. Davis,
D. C. Smithson, M. Connelly, J. Clark, F. Zhu, M. B. Jimenez-Diaz, M. S. Martinez, E. B. Wilson, A. K. Tripathi, J. Gut, E. R. Sharlow, I. Bathurst, F. El Mazouni, J. W. Fowble, I. Forquer, P. L. McGinley, S. Castro, I. Angulo-Barturen, S. Ferrer, P. J. Rosenthal, J. L. DeRisi, D. J. Sullivan Jr., J. S. Lazo, D. S. Roos, M. K. Riscoe, M. A. Phillips, P. K. Rathod, W. C. Van Voorhis, V. M. Avery, and R. K. Guy. Chemical genetics of Plasmodium
F. Aguero, B. Al-Lazikani, M. Aslett, M. Berriman, F. S. Buckner, R. K. Campbell, S. Carmona, I. M. Carruthers, A. W. Chan, F. Chen, G. J. Crowther, M. A. Doyle, C. Hertz-Fowler, A. L. Hopkins, G. McAllister, S. Nwaka, J. P. Overington, A. Pain, G. V. Paolini, U. Pieper,
S. A. Ralph, A. Riechers, D. S. Roos, A. Sali, D. Shanmugam, T. Suzuki, W. C. Van Voorhis, and C. L. M. J. Verlinde. Genomic-scale prioritization of drug targets: the TDR Targets database.Nat. Rev. Drug Discov.7: 900-7.
G. J. Crowther, C. C. Speake, A. A. McBride, and M. E. Lidstrom. Molecular and cell biology: an engineering perspective. In: G. Alterovitz and M. Ramoni, eds. Systems bioinformatics: an engineering case-based approach. Artech House Publishers.
Principal Investigator of $50,000 Challenge Grant ("Extending primaquine use via small-molecule stabilization of G6PD mutants") awarded by the Medicines for Malaria Venture (MMV).
Supervision of students and trainees (undergraduates unless otherwise noted): Sarah J. Ward (Ph.D. student, College of Education, 2013-present; co-supervised with Katie Davis), Tatiana M. Phillips (2012-present), Sara M. Weller (medical student, 2012), Jackson C. Jones (2011-13), Mallory M. Krahn (2011-13), Jack S. Mo (2011-present),
Kartheek S. Dasari (2011-12), S. Arshiya Quadri (medical student, 2011), Jacob W. McPhee (2010-11), Benjamin J. Shannon-Alferes (2010-11),
Andrew P. Thomas (2008-10), Kuzma V. Kovzun (2008-10),
Diana J. Chung (post-baccalaureate, 2008-09), Christopher J. Damman (resident in internal
medicine, 2008), Jason E. W.-L. Lum (2005-06), and Daniel W.
Various science education outreach activities, both online (currently via
SingAboutScience.org) and at science fairs and festivals.