Search Results - "Fraccia, Tommaso P."
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Liquid Crystal Coacervates Composed of Short Double-Stranded DNA and Cationic Peptides
Published in ACS nano (24-11-2020)“…Phase separation of nucleic acids and proteins is a ubiquitous phenomenon regulating subcellular compartment structure and function. While complex coacervation…”
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Non-enzymatic oligonucleotide ligation in coacervate protocells sustains compartment-content coupling
Published in Nature communications (09-05-2023)“…Modern cells are complex chemical compartments tightly regulated by an underlying DNA-encoded program. Achieving a form of coupling between molecular content,…”
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Pairing statistics and melting of random DNA oligomers: Finding your partner in superdiverse environments
Published in PLoS computational biology (01-04-2022)“…Understanding of the pairing statistics in solutions populated by a large number of distinct solute species with mutual interactions is a challenging topic,…”
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Backbone-free duplex-stacked monomer nucleic acids exhibiting Watson–Crick selectivity
Published in Proceedings of the National Academy of Sciences - PNAS (14-08-2018)“…We demonstrate that nucleic acid (NA) mononucleotide triphosphates (dNTPs and rNTPs), at sufficiently high concentration and low temperature in aqueous…”
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Liquid Crystal Peptide/DNA Coacervates in the Context of Prebiotic Molecular Evolution
Published in Crystals (Basel) (01-11-2020)“…Liquid–liquid phase separation (LLPS) phenomena are ubiquitous in biological systems, as various cellular LLPS structures control important biological…”
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Liquid Crystal Ordering and Isotropic Gelation in Solutions of Four-Base-Long DNA Oligomers
Published in ACS nano (27-09-2016)“…Liquid crystal ordering is reported in aqueous solutions of the oligomer 5′-ATTAp-3′ and of the oligomer 5′-GCCGp-3′. In both systems, we quantitatively…”
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Giant optical nonlinearity in DNA lyotropic liquid crystals
Published in Optics express (16-10-2017)“…We report the experimental evidence of nonlinear optical response in DNA lyotropic nematic liquid crystals. Pump-probe experiments indicate that the…”
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Phase separations, liquid crystal ordering and molecular partitioning in mixtures of PEG and DNA oligomers
Published in Liquid crystals (08-12-2018)“…Liquid crystals (LCs) ordering of DNA and RNA oligomers relies on the presence of inter-duplex end-to-end attraction, driving the formation of linear…”
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Non-linear optical measurement of the twist elastic constant in thermotropic and DNA lyotropic chiral nematics
Published in Scientific reports (10-07-2017)“…Throughout the whole history of liquid crystals science, the balancing of intrinsic elasticity with coupling to external forces has been the key strategy for…”
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Microfluidics-Based Drying-Wetting Cycles to Investigate Phase Transitions of Small Molecules Solutions
Published in Life (Basel, Switzerland) (01-04-2024)“…Drying-wetting cycles play a crucial role in the investigation of the origin of life as processes that both concentrate and induce the supramolecular assembly…”
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Liquid crystal self-assembly of random-sequence DNA oligomers
Published in Proceedings of the National Academy of Sciences - PNAS (24-01-2012)“…In biological systems and nanoscale assemblies, the self-association of DNA is typically studied and applied in the context of the evolved or directed design…”
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Elasticity and Viscosity of DNA Liquid Crystals
Published in ACS macro letters (21-07-2020)“…Concentrated solutions of blunt-ended DNA oligomer duplexes self-assemble in living polymers and order into lyotropic nematic liquid crystal phase. Using the…”
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Liquid Crystal Ordering of Four-Base-Long DNA Oligomers with Both G–C and A–T Pairing
Published in Crystals (Basel) (01-01-2018)“…We report the liquid crystal (LC) ordering in an aqueous solution of four-base-long DNA oligomers 5′-GCTA-3′. In such systems, the formation of the chiral…”
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14
Simulating the Lyotropic Phase Behavior of a Partially Self-Complementary DNA Tetramer
Published in Biomacromolecules (08-07-2024)“…DNA oligomers in solution have been found to develop liquid crystal phases via a hierarchical process that involves Watson–Crick base pairing, supramolecular…”
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Nonenzymatic Polymerization into Long Linear RNA Templated by Liquid Crystal Self-Assembly
Published in ACS nano (23-10-2018)“…Self-synthesizing materials, in which supramolecular structuring enhances the formation of new molecules that participate to the process, represent an…”
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A liquid crystal world for the origins of life
Published in Emerging topics in life sciences (22-12-2022)“…Nucleic acids (NAs) in modern biology accomplish a variety of tasks, and the emergence of primitive nucleic acids is broadly recognized as a crucial step for…”
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Abiotic ligation of DNA oligomers templated by their liquid crystal ordering
Published in Nature communications (10-03-2015)“…It has been observed that concentrated solutions of short DNA oligomers develop liquid crystal ordering as the result of a hierarchically structured…”
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Liquid Crystal ordering of DNA Dickerson Dodecamer duplexes with different 5'- Phosphate terminations
Published in Molecular Crystals and Liquid Crystals (13-04-2019)“…The onset of liquid crystal (LC) phases in concentrated aqueous solutions of DNA oligomers crucially depends on the end-to-end interaction between the DNA…”
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Evidence of Liquid Crystal–Assisted Abiotic Ligation of Nucleic Acids
Published in Origins of life and evolution of biospheres (01-06-2015)“…The emergence of early life must have been marked by the appearance in the prebiotic era of complex molecular structures and systems, motivating the…”
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Corrigendum: Abiotic ligation of DNA oligomers templated by their liquid crystal ordering
Published in Nature communications (17-06-2015)Get full text
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