Regensburg 2019 – wissenschaftliches Programm

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BP: Fachverband Biologische Physik

BP 5: Systems biology & gene expression and signaling

BP 5.4: Vortrag

Montag, 1. April 2019, 16:00–16:15, H11

Towards synthetic cells using peptide-based reaction compartmentsKilian Vogele1, Thomas Frank1, Lukas Gasser1, Marisa A. Goetzfried1, Mathias W. Hackl2, Stephan A. Sieber2, Friedrich C. Simmel1, and •Tobias Pirzer11Physics of Synthetic Biological Systems - E14, Physics-Department and ZNN, Technische Universität München, 85748 Garching, Germany — 2Department of Chemistry, Center for Integrated Protein Science Munich (CIPSM), Technische Universität München, Lichtenbergstraße 4, 85748 Garching, Germany

Membrane compartmentalization and growth are central aspects of living cells, and are thus encoded in every cell's genome. For the creation of artificial cellular systems, genetic information and production of membrane building blocks will need to be coupled in a similar manner. However, natural biochemical reaction networks and membrane building blocks are notoriously difficult to implement in vitro.

In this work we utilized amphiphilic elastin-like peptides (ELP) to create self-assembled vesicular structures of about 200 nm diameter. In order to genetically encode the growth of these vesicles, we encapsulate a cell-free transcription-translation system together with the DNA template inside the peptide vesicles. We show in vesiculo production of a functioning fluorescent RNA aptamer and a fluorescent protein. Furthermore, we implement in situ expression of the membrane peptide itself and finally demonstrate autonomous vesicle growth due to the incorporation of this ELP into the membrane.

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