The Department of Biochemistry, Molecular Biology and Biophysics proudly present the 9 th Bollum Symposium entitled "Regulating Biological Function by Ubiquitination." Post-translational modification by the covalent attachment of ubiquitin regulates nearly every facet of biology including apoptosis, cell cycle control, and transcription. The symposium will feature four internationally renowned researchers who have made substantial contributions to the current understanding of biological regulation by ubiquitination. The featured speakers include Dr. Keith D. Wilkinson, Professor and Vice Chair of Biochemistry and Acting Director of the Graduate Division of Biological and Biomedical Sciences at Emory University, Dr. Rachel E. Klevit, Professor of Biochemistry at the University of Washington, Dr. Daniel Finley, Professor of Cell Biology at Harvard Medical School, and Dr Randy Y. Hampton, Professor of Biology at the University of California, San Diego.   Each speaker will focus on different facets of ubiquitin modification to provide a stimulating symposium that contains the latest knowledge in the field.