doi:10.1038/s41598-017-04364-7engFiasconaro, A.Mazo, J.J.Falo, F.Active translocation of a semiflexible polymer assisted by an ATP-based molecular motorART-2017-100709In this work we study the assisted translocation of a polymer across a membrane nanopore, inside which a molecular motor exerts a force fuelled by the hydrolysis of ATP molecules. In our model the motor switches to its active state for a fixed amount of time, while it waits for an ATP molecule which triggers the motor, during an exponentially distributed time lapse. The polymer is modelled as a beads-springs chain with both excluded volume and bending contributions, and moves in a stochastic three dimensional environment modelled with a Langevin dynamics at a fixed temperature. The resulting dynamics shows a Michaelis-Menten translocation velocity that depends on the chain flexibility. The scaling behavior of the mean translocation time with the polymer length for different bending values is also investigated.2017http://zaguan.unizar.es/record/6194510.1038/s41598-017-04364-7http://zaguan.unizar.es/record/61945oai:zaguan.unizar.es:61945info:eu-repo/grantAgreement/ES/MINECO/FIS2014-55867-PScientific reports 7 (2017), [11 pp]byhttp://creativecommons.org/licenses/by/3.0/es/info:eu-repo/semantics/openAccess