Bidirectional Transport: Matchmaking for Motors

نویسنده

  • Michael A. Welte
چکیده

In bidirectional transport, opposing motors frequently require each other for full activity. A new study suggests that mechanical coupling between motors is the key to this reciprocal activation.

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Traffic by small teams of molecular motors

Molecular motors transport various cargos along cytoskeletal filaments, analogous to trucks on roads. In contrast to vehicles, however, molecular motors do not work alone but in small teams. We describe a simple model for the transport of a cargo by one team of motors and by two teams of motors, which walk into opposite directions. The cooperation of one team of motors generates long-range tran...

متن کامل

Motor Coordination via a Tug-of-War Mechanism Drives Bidirectional Vesicle Transport

The microtubule motors kinesin and dynein function collectively to drive vesicular transport. High-resolution tracking of vesicle motility in the cell indicates that transport is often bidirectional, characterized by frequent directional changes. However, the mechanisms coordinating the collective activities of oppositely oriented motors bound to the same cargo are not well understood. To exami...

متن کامل

Dynein catch bond as a mediator of codependent bidirectional cellular transport

Intracellular bidirectional transport of cargo on Microtubule filaments is achieved by the collective action of oppositely directed dynein and kinesin motors. Experimental investigations probing the nature of bidirectional transport have found that in certain cases, inhibiting the activity of one type of motor results in an overall decline in the motility of the cellular cargo in both direction...

متن کامل

Bidirectional transport by molecular motors: enhanced processivity and response to external forces.

Intracellular transport along cytoskeletal filaments is often mediated by two teams of molecular motors that pull on the same cargo and move in opposite directions along the filaments. We have recently shown theoretically that this bidirectional transport can be understood as a stochastic tug-of-war between the two motor teams. Here, we further develop our theory to investigate the experimental...

متن کامل

Jamming of molecular motors as a tool for transport cargos along microtubules

The hopping model for cargo transport by molecular motors introduced in Refs. [12, 13] is extended in order to incorporate the movement of cargo-motor complexes (C-MC). Hopping processes in this context expresses the possibility for cargo to be exchanged between neighboring motors at a microtubule where the transport takes place. Jamming of motors is essential for cargos to execute long-range m...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:
  • Current Biology

دوره 20  شماره 

صفحات  -

تاریخ انتشار 2010