Events

21.05.2012  | 16:30 - 17:30
In Kalender eintragen Ort: HS 2, Pharmazentrum; Klingelbergstr. 50-70, Basel

From Bulk to Single Molecule; Metal Ions Guiding Large RNAs.

Prof. Ronald Sigel, University of Zurich

RNAs fulfill many roles in Nature, including RNA processing, protein synthesis, gene regulation, and the live cycle of a cell. Metal ions are inextricably involved in folding, structure and function of any RNA. The main topic of this talk will be the role of metal ions in folding and catalysis of a catalytic group II intron ribozyme from yeast mitochondria. The group II introns splicing reaction is promoted by Mg2+, but severely hampered by small amounts of Ca2+. By a combination of NMR spectroscopy, biochemical experiments, and single molecule FRET we are elucidating, how Ca2+ influences local structures of the catalytic core as well as the global folding pathway. Single molecule spectroscopy offers new ways to understand the behavior of biomolecules by revealing also minor folding states and populations: To give just two examples, in the presence of Ca2+ two distinct subpopulations of group II introns are formed that do not interchange, and the formation of the splice site occurs over a large range in KD values that is not apparent from any bulk experiment. In a second part of the talk, the interaction between coenzyme B12 and its cognate btuB riboswitch from E. coli, a regulatory element found almost exclusively in bacteria, will be discussed. Single atom changes on the B12 lead to either an incomplete structural change or a totally different change in structure of this 200 nucleotide long RNA.

Host: Tiziano Gallo Cassarino, Bizentrum

22.05.2012  | 14:15 - 16:00
In Kalender eintragen Ort: HS 2, Pharmazentrum; Klingelbergstr. 50-70, Basel

In silico chemoproteomics in drug discovery.

Edgar Jacoby
Center for Proteomic Chemistry, NIBR

Host: Paul Herrling, Torsten Schwede

23.05.2012  | 16:00 - 17:00
In Kalender eintragen Ort: Room 511, Biozentrum; Klingelbergstr. 50-70, Basel

Career Seminar: From the Lab Bench to the Market Place - Patenting and Licensing in Academia.

Dr. Peter Eckar & Dr. Daniel Gisi,
Unitectra Technology Transfer

Host: PostDoc Club, Biozentrum
Email: karin.ackema@unibas.ch
Phone: 72162