Kinetic Requirements to Sustain Chemical Reaction Networks in an Open System

Hideshi Ooka; Tomoharu Suda; Ryuhei Nakamura

Presentation information

[J] Oral

U (Union ) » Union

[U-11] Biogeochemistry of CO world

Sun. May 26, 2024 3:30 PM - 4:45 PM Convention Hall (CH-A) (International Conference Hall, Makuhari Messe)

convener:Yuichiro Ueno(Department of Earth and Planetary Sciences, Tokyo Institute of Technology), Norio Kitadai(Japan Agency for Marine-Earth Science and Technology), Shino Suzuki(Japan Aerospace Exploration Agency), Kazumi Ozaki(Tokyo Institute of Technology), Chairperson:Norio Kitadai(Japan Agency for Marine-Earth Science and Technology), Shino Suzuki(Japan Aerospace Exploration Agency)

4:15 PM - 4:30 PM

[U11-08] Kinetic Requirements to Sustain Chemical Reaction Networks in an Open System

*Hideshi Ooka¹, Tomoharu Suda¹, Ryuhei Nakamura^1,2 (1.RIKEN Center for Sustainable Resource Science (CSRS), 2.Tokyo Institute of Technology, Earth-Life Science Institute (ELSI))

Keywords:Chemical Reaction Network, Open System, Autocatalysis, Dynamical Systems Analysis

The natural environment is an open system, where chemical species can diffuse away. In such an environment, a mechanism to maintain the concentration of chemical species is required to stabilize chemical reaction networks such as prebiotic metabolism. In this study, we will propose autocatalysis as a potential mechanism to counter diffusion, and present several kinetic requirements necessary to stabilize the chemical reaction network. The kinetic requirement becomes more stringent when the number of species increases, implying the possibility of chemical evolution towards stronger amplification and slower dissipation.