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Protein Tectons as Programmable Matter at the Nanoscale: From New Materials & Ultrastructuring to Modular Cells & Prebiotic Protocells

Dr. Stefan Schiller, Albert-Ludwigs-Universität Freiburg

Datum:  03.05.2019 um 15:30 Uhr

Ort: Kleiner Physik-Hörsaal N 020, Fakultät für Physik

Complex functional systems constituted by multifunctional molecular building blocks at the nanoscale allow to remodel living cells and materials at a fundamental level. In the context presented here, precisely defined and modified proteins are used as tectons (architectural building blocks at molecular dimensions) to design modular elements for the constitution of complex systems. The protein tectons are accessed and modified biosynthetically including the site-selective introduction of noncanonical amino acids to introduce artificial and xenobiotic functions.

The systems we access implement 3D structuring at the nano- & micro scale via 3D printing or via a recent technique we termed „Protein Adaptor-Based Nano Object Assembly“ (PABNOA) implementing new material developments for applications in medicine and technology. Material developments towards autonomous and non-linear responsive materials come into reach.

The environmental control of structure/conformation of the specific fold/sequence of the block-domain design with amphiphilic properties allows to „program“ responsive and adaptive molecular systems constituting defined compartmentalized vesicular reaction spaces in vitro and in vivo. The dynamic membrane character of these superstructures allows us to program the constitution of de novo organelles in vivo enabling the compartmentalization of reaction spaces for the functional expansion of cells & protocells allowing for the biofermentation of ultrapotent drugs/enzymes. Furthermore we demonstrate the ability of dynamically adaptive, protein-based organelles (PBOs) to constitute a first example for prebiotic protocells based on proteins only!