Assistant Professor School of Biological Sciences Washington State University Pullman, WA 99164-4236   Phone: 509-335-2762 Email: hellmann@wsu.edu   PhD - 1997, Department of Plant Physiology, Eberhard-Karls-University Tübingen RESEARCH INTERESTS: Plant Reproduction RESEARCH SUMMARY:   REPRESENTATIVE PUBLICATIONS: Leuendorf, J.E., Genau, A., Szewczyk, A, Mooney, S., Drewke, C., Leistner, E., Hellmann, H. (2007) The PDX1 family is structurally and functionally conserved between Arabidopsis thaliana and Ginkgo biloba. FEBS J. submitted Weber, H., Hano, P., Hellmann, H. (2007) The Charming Complexity of Cul3. Internat. J. Dev. Plant. 1, 178-184 Bernhardt, A., Lechner, E., Hano, P., Schade, V., Dieterle, M., Anders, M., Dubin, M.J., Benvenuto, G., Bowler, C., Genschik, P., Hellmann, H. (2006) CUL4 associates with DDB1a and DET1 and its down regulation affects diverse aspects of development in Arabidopsis thaliana. Plant J. 47, 591-603 Wagner, S., Bernhardt, A., Leuendorf, J.E., Drewke, C., Lytovchenko, A., Mujahed, N., Gurgui, C., Frommer, W.B., Leistner, E., Fernie, A.R., Hellmann, H. (2006) Analysis of the Arabidopsis rsr4-1/pdx1-3 Mutant Reveals the Critical Function of the PDX1 Protein Family in Metabolism, Development, and Vitamin B6 Biosynthesis. Plant Cell. 18, 1722- 1735. Weber, H., Bernhardt, A., Dieterle, M., Hano, P., Mutlu, A., Estelle, M., Genschik, P., Hellmann, H. (2005) Arabidopsis AtCUL3a and AtCUL3b form complexes with members of the BTB/POZ-MATH protein family. Plant Physiol. 137, 83-93. Ren, C., Pan, J., Peng, W., Genschik, P., Hobbie, L., Hellmann, H., Estelle, M., Gao, B., Peng, J., Sun, C., Xie, D. (2005) Point mutations in Arabidopsis Cullin1 reveal its essential role in jasmonate response Plant J. 42, 514–524. Figueroa, P., Gusmaroli, G., Serino, G., Habashi, J., Ma, L., Shen, Y., Feng, S., Bostick, M., Callis, J., Hellmann, H., Deng, X.W. (2005) Arabidopsis Has Two Redundant Cullin3 Proteins That Are Essential for Embryo Development and That Interact with RBX1 and BTB Proteins to Form Multisubunit E3 Ubiquitin Ligase Complexes in Vivo. Plant Cell 17, 1180-1195. Gingerich, D.J., Gagne, J.M., Salter, D.W., Hellmann, H., Estelle, M., Vierstra, R.D. (2005) Cullin 3A and B assemble with members of the broad complex/tramtrack/bric-A- brac (BTB). J Biol Chem. 280, 18810-18821.