IAFE 05512
INSTITUTO DE ASTRONOMIA Y FISICA DEL ESPACIO
Unidad Ejecutora - UE
congresos y reuniones científicas
Título:
Asymmetries in kinesin-2 and cytoplasmic dynein contributions to melanosome transport
Autor/es:
DE ROSSI, MARÍA CECILIA; DE ROSSI, MARÍA EMILIA; SUED, MARIELA; RODRÍGUEZ, DANIELA; BRUNO, LUCIANA; LEVI, VALERIA
Lugar:
Ciudad Autónoma de Buenos Aires
Reunión:
Encuentro; Latin American Conference on Mathematical Modeling of Biological Systems; 2015
Institución organizadora:
La Sociedad Argentina de Biofísica (SAB) y el Centro Latinoamerica de Formación Interdisciplinaria (CELFI)
Resumen:
The mechanisms involved in bidirectional transport along microtubulesremain largely unknown. We explored the collective action of kinesin-2 and dynein motors during transport of melanosomes in Xenopus laevis melanophores. These motors are attached to organelles through accessory proteins establishing a complex molecular linker. We determined both the stiffness of this linker and the organelles speed and observed that these parameters depended on the organelle size and cargo direction. Our results suggest that melanosome transport is driven by two dissimilar teams: whereas dynein motors compete with kinesin-2 affecting the properties of plus-end directed organelles, kinesin-2 does not seem to play a similar role during minus-end transport.
