Institutsseminar Biologische Chemie: Julio A. Camarero, Los Angeles: Cyclotides, a new molecular scaffold to target protein-protein interactions

When: Tue, 15.11., 16:00

Where: Lecture hall 4

Julio A. Camarero, Ph.D., John A. Biles Professor in Pharmaceutical Sciences, Department of Pharmacology and Pharmaceutical Sciences, School of Pharmacy, Norris Comprehensive Cancer Center, Keck School of Medicine, University of Southern California, Los Angeles, USA - Julio A. Camarero, PhD – USC School of Pharmacy

Cyclotides are globular microproteins with a unique head-to-tail cyclized backbone, stabilized by three disulfide bonds forming a cystine knot. This unique circular backbone topology and knotted arrangement of three disulfide bonds makes them exceptionally stable to chemical, thermal, and biological degradation compared to other peptides of similar size. In addition, cyclotides have been shown to be highly tolerant to sequence variability, aside from the conserved residues forming the cystine knot. Cyclotides can also cross cellular membranes and are able to modulate intracellular protein-protein interactions, both in vitro and in vivo. All of these features make cyclotides highly promising as leads or frameworks for the design of peptide-based diagnostic and therapeutic tools. I will provide an overview on cyclotides and their applications as molecular imaging agents and peptide-based therapeutics.

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