Analysis of persistence during intracellular actin-based transport mediated by molecular motors

Autores
Pallavicini, C.; Despósito, M.A.; Levi, V.; Bruno, L.
Año de publicación
2010
Idioma
inglés
Tipo de recurso
documento de conferencia
Estado
versión publicada
Descripción
The displacement of particles or probes in the cell cytoplasm as a function of time is characterized by different anomalous diffusion regimes. The transport of large cargoes, such as organelles, vesicles or large proteins, involves the action of ATP-consuming molecular motors. We investigate the motion of pigment organelles driven by myosin-V motors in Xenopus laevis melanocytes using a high spatio-temporal resolution tracking technique. By analyzing the turning angles (φ) of the obtained 2D trajectories as a function of the time lag, we determine the critical time of the transition between anticorrelated and directed motion as the time when the turning angles begin to concentrate around φ 0. We relate this transition with the crossover from subdiffusive to superdiffusive behavior observed in a previous work [5]. We also assayed the properties of the trajectories in cells with inhibited myosin activity, and we can compare the results in the presence and absence of active motors. © 2010 IOP Publishing Ltd.
Fil:Despósito, M.A. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina.
Fil:Levi, V. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina.
Fil:Bruno, L. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina.
Fuente
J. Phys. Conf. Ser. 2010;246
Materia
Cytology
Anomalous diffusion
Cell cytoplasm
Function of time
Molecular motors
Spatio-temporal resolution
Tracking techniques
Turning angles
Xenopus laevis
Proteins
Nivel de accesibilidad
acceso abierto
Condiciones de uso
http://creativecommons.org/licenses/by/2.5/ar
Repositorio
Biblioteca Digital (UBA-FCEN)
Institución
Universidad Nacional de Buenos Aires. Facultad de Ciencias Exactas y Naturales
OAI Identificador
paperaa:paper_17426588_v246_n_p_Pallavicini
Acceder
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oai_identifier_str paperaa:paper_17426588_v246_n_p_Pallavicini
network_acronym_str BDUBAFCEN
repository_id_str 1896
network_name_str Biblioteca Digital (UBA-FCEN)
spelling Analysis of persistence during intracellular actin-based transport mediated by molecular motorsPallavicini, C.Despósito, M.A.Levi, V.Bruno, L.CytologyAnomalous diffusionCell cytoplasmFunction of timeMolecular motorsSpatio-temporal resolutionTracking techniquesTurning anglesXenopus laevisProteinsThe displacement of particles or probes in the cell cytoplasm as a function of time is characterized by different anomalous diffusion regimes. The transport of large cargoes, such as organelles, vesicles or large proteins, involves the action of ATP-consuming molecular motors. We investigate the motion of pigment organelles driven by myosin-V motors in Xenopus laevis melanocytes using a high spatio-temporal resolution tracking technique. By analyzing the turning angles (φ) of the obtained 2D trajectories as a function of the time lag, we determine the critical time of the transition between anticorrelated and directed motion as the time when the turning angles begin to concentrate around φ 0. We relate this transition with the crossover from subdiffusive to superdiffusive behavior observed in a previous work [5]. We also assayed the properties of the trajectories in cells with inhibited myosin activity, and we can compare the results in the presence and absence of active motors. © 2010 IOP Publishing Ltd.Fil:Despósito, M.A. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina.Fil:Levi, V. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina.Fil:Bruno, L. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina.2010info:eu-repo/semantics/conferenceObjectinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_5794info:ar-repo/semantics/documentoDeConferenciaapplication/pdfhttp://hdl.handle.net/20.500.12110/paper_17426588_v246_n_p_PallaviciniJ. Phys. Conf. Ser. 2010;246reponame:Biblioteca Digital (UBA-FCEN)instname:Universidad Nacional de Buenos Aires. Facultad de Ciencias Exactas y Naturalesinstacron:UBA-FCENenginfo:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by/2.5/ar2025-11-06T09:39:57Zpaperaa:paper_17426588_v246_n_p_PallaviciniInstitucionalhttps://digital.bl.fcen.uba.ar/Universidad públicaNo correspondehttps://digital.bl.fcen.uba.ar/cgi-bin/oaiserver.cgiana@bl.fcen.uba.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:18962025-11-06 09:39:59.275Biblioteca Digital (UBA-FCEN) - Universidad Nacional de Buenos Aires. Facultad de Ciencias Exactas y Naturalesfalse
dc.title.none.fl_str_mv Analysis of persistence during intracellular actin-based transport mediated by molecular motors
title Analysis of persistence during intracellular actin-based transport mediated by molecular motors
spellingShingle Analysis of persistence during intracellular actin-based transport mediated by molecular motors
Pallavicini, C.
Cytology
Anomalous diffusion
Cell cytoplasm
Function of time
Molecular motors
Spatio-temporal resolution
Tracking techniques
Turning angles
Xenopus laevis
Proteins
title_short Analysis of persistence during intracellular actin-based transport mediated by molecular motors
title_full Analysis of persistence during intracellular actin-based transport mediated by molecular motors
title_fullStr Analysis of persistence during intracellular actin-based transport mediated by molecular motors
title_full_unstemmed Analysis of persistence during intracellular actin-based transport mediated by molecular motors
title_sort Analysis of persistence during intracellular actin-based transport mediated by molecular motors
dc.creator.none.fl_str_mv Pallavicini, C.
Despósito, M.A.
Levi, V.
Bruno, L.
author Pallavicini, C.
author_facet Pallavicini, C.
Despósito, M.A.
Levi, V.
Bruno, L.
author_role author
author2 Despósito, M.A.
Levi, V.
Bruno, L.
author2_role author
author
author
dc.subject.none.fl_str_mv Cytology
Anomalous diffusion
Cell cytoplasm
Function of time
Molecular motors
Spatio-temporal resolution
Tracking techniques
Turning angles
Xenopus laevis
Proteins
topic Cytology
Anomalous diffusion
Cell cytoplasm
Function of time
Molecular motors
Spatio-temporal resolution
Tracking techniques
Turning angles
Xenopus laevis
Proteins
dc.description.none.fl_txt_mv The displacement of particles or probes in the cell cytoplasm as a function of time is characterized by different anomalous diffusion regimes. The transport of large cargoes, such as organelles, vesicles or large proteins, involves the action of ATP-consuming molecular motors. We investigate the motion of pigment organelles driven by myosin-V motors in Xenopus laevis melanocytes using a high spatio-temporal resolution tracking technique. By analyzing the turning angles (φ) of the obtained 2D trajectories as a function of the time lag, we determine the critical time of the transition between anticorrelated and directed motion as the time when the turning angles begin to concentrate around φ 0. We relate this transition with the crossover from subdiffusive to superdiffusive behavior observed in a previous work [5]. We also assayed the properties of the trajectories in cells with inhibited myosin activity, and we can compare the results in the presence and absence of active motors. © 2010 IOP Publishing Ltd.
Fil:Despósito, M.A. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina.
Fil:Levi, V. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina.
Fil:Bruno, L. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina.
description The displacement of particles or probes in the cell cytoplasm as a function of time is characterized by different anomalous diffusion regimes. The transport of large cargoes, such as organelles, vesicles or large proteins, involves the action of ATP-consuming molecular motors. We investigate the motion of pigment organelles driven by myosin-V motors in Xenopus laevis melanocytes using a high spatio-temporal resolution tracking technique. By analyzing the turning angles (φ) of the obtained 2D trajectories as a function of the time lag, we determine the critical time of the transition between anticorrelated and directed motion as the time when the turning angles begin to concentrate around φ 0. We relate this transition with the crossover from subdiffusive to superdiffusive behavior observed in a previous work [5]. We also assayed the properties of the trajectories in cells with inhibited myosin activity, and we can compare the results in the presence and absence of active motors. © 2010 IOP Publishing Ltd.
publishDate 2010
dc.date.none.fl_str_mv 2010
dc.type.none.fl_str_mv info:eu-repo/semantics/conferenceObject
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_5794
info:ar-repo/semantics/documentoDeConferencia
format conferenceObject
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/20.500.12110/paper_17426588_v246_n_p_Pallavicini
url http://hdl.handle.net/20.500.12110/paper_17426588_v246_n_p_Pallavicini
dc.language.none.fl_str_mv eng
language eng
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by/2.5/ar
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by/2.5/ar
dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv J. Phys. Conf. Ser. 2010;246
reponame:Biblioteca Digital (UBA-FCEN)
instname:Universidad Nacional de Buenos Aires. Facultad de Ciencias Exactas y Naturales
instacron:UBA-FCEN
reponame_str Biblioteca Digital (UBA-FCEN)
collection Biblioteca Digital (UBA-FCEN)
instname_str Universidad Nacional de Buenos Aires. Facultad de Ciencias Exactas y Naturales
instacron_str UBA-FCEN
institution UBA-FCEN
repository.name.fl_str_mv Biblioteca Digital (UBA-FCEN) - Universidad Nacional de Buenos Aires. Facultad de Ciencias Exactas y Naturales
repository.mail.fl_str_mv ana@bl.fcen.uba.ar
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