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Atomically Defined Templates for Epitaxial Growth of Complex Oxide Thin Films
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Kinetic Selection of Template Polymer with Complex Sequences.

Yoshiya J Matsubara1, Kunihiko Kaneko1

  • 1Graduate School of Arts and Sciences, The University of Tokyo, 3-8-1 Komaba, Meguro-ku, Tokyo 153-8902, Japan.

Physical Review Letters
|September 29, 2018
PubMed
Summary
This summary is machine-generated.

Complex polymer sequences, crucial for life's origin, are selected by controlling monomer flow rates. Lower flow rates favor more complex polymer sequences in template-driven reactions.

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Area of Science:

  • Origin of life studies
  • Polymer chemistry
  • Systems biology

Background:

  • The emergence of complex polymers is a key question in understanding the origin of life.
  • Template-directed polymerization is a proposed mechanism for creating sequence complexity.

Purpose of the Study:

  • To investigate how polymer sequence complexity arises and is maintained.
  • To explore the role of reaction conditions, specifically monomer flow rate, in sequence selection.

Main Methods:

  • Utilized a model polymerization reaction involving stepwise ligation of two monomer types.
  • Employed direct stochastic simulation and dynamical systems analysis.
  • Investigated template-directed synthesis catalyzed by a pre-existing polymer.

Main Results:

  • The dominant polymer sequence dynamically shifts based on monomer flow rate.
  • Lower monomer flow rates lead to the selection of more complex polymer sequences.
  • Kinetic selection through nonequilibrium flow influences sequence evolution.

Conclusions:

  • Nonequilibrium conditions, particularly controlled monomer supply, can drive the selection of complex polymer sequences.
  • This kinetic sequence selection mechanism is relevant to the origin of complex polymers in early Earth conditions.