Undesired usage and the robust self-assembly of heterogeneous structures

Area of Science:

• Synthetic biology
• Materials science
• Biophysics

Background:

• Biological multiprotein complexes and synthetic self-assembly methods face challenges in achieving high yields.
• Incomplete or incorrectly bound structures often reduce overall assembly efficiency.

Purpose of the Study:

• To investigate the impact of component concentrations on the yield of complex synthetic assemblies.
• To identify strategies for mitigating yield loss due to undesired structures.

Main Methods:

• Studied diverse models of spontaneous self-assembly with varying component concentrations.
• Analyzed the relationship between structural complexity, component stoichiometry, and assembly yield.
• Developed and tested the 'undesired usage' principle for concentration selection.

Main Results:

• Assembly yield drastically decreases with increasing structural size and complexity when component concentrations match the desired structure's stoichiometry.
• Highly non-stoichiometric component concentrations can significantly mitigate this yield loss.
• The 'undesired usage' principle, considering component use in undesired structures, is validated.

Conclusions:

• Optimizing component concentrations based on their 'undesired usage' is crucial for high-yield synthetic assembly.
• This principle offers a pathway to enhance synthetic assembly methods and provides insights into biological complex formation.
• Further research is needed to explore implications for biological systems like the ribosome.