Research Information
Research Interests
Bacillus thuringiensis (Bt) is a soil bacterium which produces proteinaceous inclusion bodies during sporulation. The inclusion bodies contain genetically encoded insecticidal proteins with very narrow insect specificity. Dipteran Bt toxins control mosquitoes and blackflies, lepidopteran toxins protect forest and crops from caterpillars of moths, while coleopterans kill beetles. Bt has been used for insect control over 60 years without any negative health effect on humans, animals, birds or non-target insects. Recent advances made possible to place the Bt genes in plants. The transgenic Bts express the insecticidal proteins providing self protection to the plants against mostly lepidopteran insects. The mechanism of the bioactivity is largely known, but lots of details are yet to be described. My projects are involved 1/ in studies to fine tune the understanding of the mechanism of the dipteran Bts 2/ in collaboration with entomologists develop and maintain insect resistance under laboratory conditions to study the mechanism, in an effort to preempt the impact of possible field resistance 3/ working on the eradication of hunger in India via participating in the registration process of Bt transgenic crops as participant of an international consortium.
Publications
- Carey P.R, Whitmer G.R, Yoon M.J, Lombardo M.N, Pusztai-Carey M., Heidari-Torkabadi H., Che T.
鈥淢easuring Drug-Induced Changes in Metabolite Populations of Live Bacteria: Real Time Analysis by Raman Spectroscopy鈥�
J Phys Chem B. 122 (24): 6377-6385 (2018). - Carey P.R, Gibson B.R., Gibson J.F., Greenberg M.E., Heidari-Torkabadi H., Pusztai-Carey M., Weaver S.T., Whitmer G.R.
鈥淒efining Molecular Details of the Chemistry of Biofilm Formation by Raman Microspectroscopy. 鈥�
Biochemistry 56(17): 2247-2250. (2017) - Heidari-Torkabadi H., Bethel C.R., Ding Z., Pusztai-Carey M., Bonnet R., Bonomo R.A., Carey P.R.
鈥�"Mind the Gap": Raman Evidence for Rapid Inactivation of CTX-M-9 尾-Lactamase Using Mechanism-Based Inhibitors that Bridge the Active Site. 鈥�
J Am Chem Soc. 137(40):12760-3. (2015). - Heidari Torkabadi H., Che T., Shou J., Shanmugam S., Crowder M.W., Bonomo R.A., Pusztai-Carey M., Carey P.R.
鈥淩aman spectra of interchanging 尾-lactamase inhibitor intermediates on the millisecond time scale. 鈥�
J Am Chem Soc. 135(8):2895-8 (2013). - Che T, Bonomo RA, Shanmugam S, Bethel CR, Pusztai-Carey M, Buynak JD, Carey PR.
鈥淐arboxylation and decarboxylation of active site Lys 84 controls the activity of OXA-24 尾-lactamase of Acinetobacter baumannii: Raman crystallographic and solution evidence. 鈥�
J Am Chem Soc. 134(27):11206-15 (2012). - Anilkumar KJ, Pusztai-Carey M, and Moar WJ
鈥淔itness costs associated with Cry1Ac-resistant Helicoverpa zea (Lepidoptera: Noctuidae): a factor countering selection for resistance to Bt cotton?鈥�
Journal of Economic Entomology 101(4):1421-31, (2008) - Crespo, AL. B., Spencer T A., Nekl E, Pusztai-Carey, M., Moar W.J., and Siegfried B.D.
鈥淐omparison and Validation of Methods to Quantify Cry1Ab Toxin from Bacillus thuringiensis for Standardization of Insect Bioassays鈥�
Applied and Environmental Microbiology 74(1), 130-135 (2008) - Anilkumar, K.J., Rodrigo-Sim锟絥, A., Ferr锟�, J., Pusztai-Carey, M. Sivasupramaniam, S. and Moar W. J.
鈥淧roduction and Characterization of Bacillus thuringiensis Cry1Ac-Resistant Cotton Bollworm Helicoverpa zea (Boddie)鈥�
Appl. Environ. Microbiol. 74: 462-469 (2008) - Totir, M.A., Helfand, M., Carey, M.P. Sheri, A., Buynak, J., Bonomo, R. A. and Carey, P.R.
鈥淪ulbactam forms only minimal Amounts of irreversible acrylate-enzyme with SHV-1 ?-lactamase鈥�
Biochemistry 46(31):8980-7 (2007) - Manceva, S. D., Pusztai-Carey, M., Butko P.
鈥淓ffect of pH and ionic strength on the cytolitic toxin CytA: a fluorescence spectroscopy study鈥�
Biochim. Biophys. Acta 1699, 123-130 (2004) - Hall, P. R., Zheng, R., Antony, L., Pusztai-Carey, M., Carey, P. R. and Yee, V. C.
鈥淭ranscarboxylase 5S structures: assembly and catalytic mechanism of a multienzyme complex subunit鈥�
EMBO J. 23, 3621-3631 (2004)