{"ok":true,"nota":{"id":"ca6dbe1167140a8f","slug":"logran-medir-el-paisaje-de-energia-de-una-nanomaquina-giratoria-de-adn-ca6dbe","titulo":"Logran medir el 'paisaje de energía' de una nanomáquina giratoria de ADN en el laboratorio","resumen":"Investigadores aplicaron en un experimento real una técnica que hasta ahora se usaba sobre todo en simulaciones por computadora. Con campos eléctricos y cálculos estadísticos reconstruyeron cómo gira una máquina molecular hecha de ADN, incluyendo barreras de energía que antes no podían medirse con precisión.","fuente":"biorxiv","fuenteNombre":"bioRxiv · preprints","color":"#be2628","autor":"Weiss, L. J. K., Daubner, L., Tedeschi, N., Sulc, P., Simmel, F. C.","url":"https://www.biorxiv.org/content/10.64898/2026.10.15.758702v1?rss=1","imagen":"/hoy/portada/ca6dbe1167140a8f","tema":"ciencia","subtemas":["nanotecnologia","biofisica","adn","simulacion molecular","maquinas moleculares"],"entidades":["bioRxiv"],"formato":"dato","entretenimiento":false,"pubTs":"2026-10-20T00:00:00.000Z","indexTs":"2026-10-20T14:25:26.749Z","hash":"33a5636727120352d8b93c53f08b5c4544870af4d2f6b86b8236c5402add9c7b","tsa":{"time":"Oct 20 14:27:36 2026 GMT","provider":"freetsa.org","sobre":"sello"},"stats":{"views":0,"likes":0,"clicks":0,"dwell":0},"tipo":"normal","registro":"hallazgo","porQueImporta":"Por primera vez se pudo observar en un laboratorio real cómo se mueve una máquina molecular, algo que antes solo se estimaba en computadoras. Esto permite diseñar nanomáquinas con más control, útiles en medicina y materiales. El estudio es un paso técnico y todavía lejos de aplicaciones concretas, pero abre una vía para entender mejor el mundo de lo muy pequeño.","quienFirma":"Preprint en bioRxiv (institución principal no identificada en el resumen)","confianza":"preprint","consulta":null},"sello":{"hash":"33a5636727120352d8b93c53f08b5c4544870af4d2f6b86b8236c5402add9c7b","sello":"2b8d1369a08243fc8a52e661bc4664c7a2d58119d512bdc389248b03346f8a9b","beacon":{"drand":{"cadena":"8990e7a9aaed2ffed73dbd7092123d6f289930540d7651336225dc172e51b2ce","ronda":6569181,"aleatorio":"82189fa2f10c39fabb73d9a997d3d2e47d75186925a1ea366e0c233cdc61f0f9","tiempo":"2026-10-20T14:27:30.000Z"},"nist":{"cadena":2,"pulso":1991796,"salida":"6A5C882991EB93F58143DBB8A0360CEF5D44C7E27232DBD8BD79C70C62C9DE58AFFF494E6665F919F409962B0C72FBA2E9C830A18CD3C9E6809CFDD8291C3CFB","tiempo":"2026-10-20T14:27:00.000Z"},"noAntes":"2026-10-20T14:27:30.000Z"},"verificacion":{"drand":true,"nist":true},"tsa":{"time":"Oct 20 14:27:36 2026 GMT","provider":"freetsa.org","sobre":"sello"},"original":{"titulo":"Experimental umbrella sampling of a rotary nanomachine","descripcion":"The free-energy landscape of a molecular system, which describes its free energy as a function of a few collective coordinates, governs its dynamics and function, but is challenging to determine experimentally. In molecular simulations, enhanced-sampling methods such as umbrella sampling use bias potentials to access regions of this landscape that are rarely visited by equilibrium fluctuations. Here, we transfer this concept to a single-molecule experiment: we combine electric-field biasing, in situ calibration of the bias potentials, and statistical reweighting to reconstruct the angular free-energy landscapes of rotary DNA nanomachines. The method resolves barriers exceeding 10 kBT and det","pubDate":"2026-10-20","url":"https://www.biorxiv.org/content/10.64898/2026.10.15.758702v1?rss=1"},"indexado":"2026-10-20T14:25:26.749Z"}}