Volume 58, Issue 44 pp. 15783-15787
Communication

Designed Negative Feedback from Transiently Formed Catalytic Nanostructures

Syed Pavel Afrose

Syed Pavel Afrose

Department of Chemical Sciences & Centre for Advanced Functional Materials, Indian Institute of Science Education and Research (IISER), Kolkata, Mohanpur, West Bengal, 741246 India

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Subhajit Bal

Subhajit Bal

Department of Chemical Sciences & Centre for Advanced Functional Materials, Indian Institute of Science Education and Research (IISER), Kolkata, Mohanpur, West Bengal, 741246 India

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Ayan Chatterjee

Ayan Chatterjee

Department of Chemical Sciences & Centre for Advanced Functional Materials, Indian Institute of Science Education and Research (IISER), Kolkata, Mohanpur, West Bengal, 741246 India

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Krishnendu Das

Krishnendu Das

Department of Chemical Sciences & Centre for Advanced Functional Materials, Indian Institute of Science Education and Research (IISER), Kolkata, Mohanpur, West Bengal, 741246 India

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Dibyendu Das

Corresponding Author

Dibyendu Das

Department of Chemical Sciences & Centre for Advanced Functional Materials, Indian Institute of Science Education and Research (IISER), Kolkata, Mohanpur, West Bengal, 741246 India

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First published: 02 September 2019
Citations: 61

Graphical Abstract

Burst catalysis: A substrate-induced transient helical morphology was accessed as a self-assembled state. Critically, burst hydrolytic rates of substrates result in disassembly, thus mimicking the dynamic instability of microtubules.

Abstract

Highly dynamic and complex systems of microtubules undergo a substrate-induced change of conformation that leads to polymerization. Owing to the augmented catalytic potential at the polymerized state, rapid hydrolysis of the substrate is observed, leading to catastrophe, thus realizing the out-of-equilibrium state. A simple synthetic mimic of these dynamic natural systems is presented, where similar substrate induced conformational change is observed and a transient helical morphology is accessed. Further, augmented catalytic potential of these helical nanostructures leads to rapid hydrolysis of the substrate providing negative feedback on the stability of the nanostructures and realization of an out-of-equilibrium state. This simple system, made from amino acid functionalized lipids, demonstrates a substrate-induced self-assembled state, where the fuel-to-waste conversion leads to the temporal presence of helical nanostructures.

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