Seminars

DEPARTMENT OF CHEMISTRY, SEOUL NATIONAL UNIVERSITY.

A photosynthetic engine to make artificial cells

August 27, 2018l Hit 730
Date : September 27, 2018 16:30 ~
Speaker : Prof. Tae Kyou Ahn(SUNGKYUNKWAN UNIVERSITY)
Location : Mogam Hall, Bldg 500
Complex metabolic reactions in cells are distributed in organelle modular compartments. Reactions in organelles have been reproduced in vitro by reconstituting functional protein machinery into membrane systems. However, it is difficult to maintain and control such a reaction. We tested harvest organelle design, if switchable, to provide both a sustainable energy source and means to induce bladder response.[1] ATP (ATP) sinter agent and two light converters (plant-derived photochemical system II and proteorhodopsin derived from bacteria) enable ATP synthesis. It depends on two optical conversion devices, and it enables optical control to dynamically control ATP synthesis. Red light and green light interfere with ATP synthesis. We encapsulated giant vesicle light synthesizing organelle to form one cell line and showed two ATP dependent responses, optical control of carbon fixation and actin polymerization, changing the morphology of the vesicle. We hope to develop a full biomimetic vesicular system with a regulatory network showing switchable photosynthetic organelle homeostasis and complex cell behavior.