Analysis of persistence during intracellular actin-based transport mediated by molecular motors
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 mot...
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Acceso en línea: | http://hdl.handle.net/20.500.12110/paper_17426588_v246_n_p_Pallavicini |
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paperaa:paper_17426588_v246_n_p_Pallavicini2023-06-12T16:51:01Z Analysis of persistence during intracellular actin-based transport mediated by molecular motors J. Phys. Conf. Ser. 2010;246 Pallavicini, C. Despósito, M.A. Levi, V. Bruno, L. Cytology Anomalous diffusion Cell cytoplasm Function of time Molecular motors Spatio-temporal resolution Tracking techniques Turning angles Xenopus laevis Proteins 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. 2010 info:eu-repo/semantics/conferenceObject info:ar-repo/semantics/documento de conferencia info:eu-repo/semantics/publishedVersion application/pdf eng info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_17426588_v246_n_p_Pallavicini |
institution |
Universidad de Buenos Aires |
institution_str |
I-28 |
repository_str |
R-134 |
collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
language |
Inglés |
orig_language_str_mv |
eng |
topic |
Cytology Anomalous diffusion Cell cytoplasm Function of time Molecular motors Spatio-temporal resolution Tracking techniques Turning angles Xenopus laevis Proteins |
spellingShingle |
Cytology Anomalous diffusion Cell cytoplasm Function of time Molecular motors Spatio-temporal resolution Tracking techniques Turning angles Xenopus laevis Proteins Pallavicini, C. Despósito, M.A. Levi, V. Bruno, L. Analysis of persistence during intracellular actin-based transport mediated by molecular motors |
topic_facet |
Cytology Anomalous diffusion Cell cytoplasm Function of time Molecular motors Spatio-temporal resolution Tracking techniques Turning angles Xenopus laevis Proteins |
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. |
format |
Documento de conferencia Documento de conferencia publishedVersion |
author |
Pallavicini, C. Despósito, M.A. Levi, V. Bruno, L. |
author_facet |
Pallavicini, C. Despósito, M.A. Levi, V. Bruno, L. |
author_sort |
Pallavicini, C. |
title |
Analysis of persistence during intracellular actin-based transport mediated by molecular motors |
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 |
publishDate |
2010 |
url |
http://hdl.handle.net/20.500.12110/paper_17426588_v246_n_p_Pallavicini |
work_keys_str_mv |
AT pallavicinic analysisofpersistenceduringintracellularactinbasedtransportmediatedbymolecularmotors AT despositoma analysisofpersistenceduringintracellularactinbasedtransportmediatedbymolecularmotors AT leviv analysisofpersistenceduringintracellularactinbasedtransportmediatedbymolecularmotors AT brunol analysisofpersistenceduringintracellularactinbasedtransportmediatedbymolecularmotors |
_version_ |
1769810404978982912 |