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- W4288093882 abstract "RNA interference, particularly siRNA induced gene silencing is becoming an important avenue of modern therapeutics. The siRNA is delivered to the cells as short double helical RNA which becomes single stranded for forming the RISC complex. Significant experimental evidence is available for most of the steps except the process of the separation of the two strands. We have attempted to understand the pathway for double stranded siRNA (dsRNA) to single stranded (ssRNA) molecules using steered molecular dynamics simulations. As the process is completely unexplored we have applied force from all possible directions restraining all possible residues to convert dsRNA to ssRNA. We found pulling one strand along helical axis direction restraining far end of the other strand demands excessive force for ssRNA formation. Pulling a central residue of one strand, in a direction perpendicular to the helix axis, while keeping the base paired residue fixed requires intermediate force for strand separation. Moreover we found that in this process the force requirement is quite high for the first bubble formation (nucleation energy) and the bubble propagation energies are quite small. We hypothesize this could be the mode of action adopted by the proteins in the cells." @default.
- W4288093882 created "2022-07-28" @default.
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- W4288093882 date "2019-10-09" @default.
- W4288093882 modified "2023-09-27" @default.
- W4288093882 title "Maturation of siRNA by strand separation: Steered Molecular dynamics study" @default.
- W4288093882 doi "https://doi.org/10.48550/arxiv.1910.03778" @default.
- W4288093882 hasPublicationYear "2019" @default.
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