HOME >> BIOLOGY >> NEWS
One-dimensional diffusion accelerates molecular motors

Max Planck scientists have identified a new strategy which motor proteins use to move. The research was carried out by Prof. Jonathon Howard and Stefan Diez at the Max Planck Institute of Molecular Cell Biology and Genetics in Dresden. The motor protein MCAK (Mitotic Centromere Associated Kinesin) goes into action at the end of microtubules where it disassembles them. This is in contrast to most other motor proteins, which transport materials over long distances along microtubules. The researchers were able to show that the protein reaches the position via a random, one-dimensional diffusion movement along the microtubule, until it locks into place at its end (Nature, May 4, 2006). This discovery is important for understanding cellular life processes like cell division and nerve cell growth.

When cells divide, they build a giant apparatus - the so called the "mitotic spindle". It is made up of microtubules; which are tiny protein polymers that can be built up and torn down like scaffolding. They also make up "tracks", along which motor proteins pull the halves of chromosomes into existing daughter cells. Until now, scientists have not known how the length of microtubule gets regulated, nor how the proteins reach the end of the microtubules to be regulated.

The Max Planck researchers looked at the example of the protein MCAK, and how it locates microtubule ends. Howard and his colleagues followed single MCAK molecules under the microscope and could see that MCAK docks randomly anywhere on a microtubule, and then slides around on its surface.

This "random" strategy is surprisingly efficient and successful. It allows MCAK to localize microtubule ends very quickly. Howard says, "when it gets there, MCAK eats like a Pacman into the end of the microtubule." The chromosome halves follow this movement and are this way accurately distributed on the daughter cells.


'"/>

Contact: Prof. Jonathon Howard
howard@mpi-cbg.de
0049-351-210-2500
Max-Planck-Gesellschaft
12-May-2006


Page: 1

Related biology news :

1. Scripps research scientists show protein accelerates breast cancer progression in animal models
2. Gene therapy accelerates healing of damaged skeletal muscle
3. Georgia Tech accelerates drug discovery with new IBM supercomputing cluster
4. Chronic stress accelerates atherosclerosis following angioplasty procedure
5. Gene loss accelerates aging
6. Redesigned protein accelerates blood clotting
7. Study to determine if air pollution accelerates development of cardiovascular disease
8. $3 million donation accelerates TGen breast cancer research
9. Excess dietary fat accelerates breast cancer by altering the activity of a group of genes
10. New textbook illuminates the close links between evolutionary and molecular biology
11. New molecular regulators of hyperthyroidism and goiter

Post Your Comments:
*Name:
*Comment:
*Email:
TAG: One dimensional diffusion accelerates molecular motors

(Date:4/1/2015)... OXFORD, Conn. , Apr. 1, 2015  NXT-ID, ... a biometric authentication company focused on the growing mobile ... number of Wocket smart wallets is underway to early ... early access group includes usage at retail outlets including ... CVS Pharmacy. Users report Wocket was accepted at all ...
(Date:3/30/2015)... Mar. 26, 2015 Research and Markets ... "Global Gesture Recognition Market in Automotive Sector 2014-2018" ... forecast the Global Gesture Recognition market in Automotive Sector ... period 2013-2018. Gesture recognition is the ability ... gestures of an individual. Gesture recognition technology can be ...
(Date:3/24/2015)... 2015   NexID Biometrics LLC, whose spoof-mitigation ... today announced the beginning of shipments of version 2.0 ... The company, based in Potsdam, N.Y. ... Expo, which began here today at the Walter E. ... of its SDK boosts the accuracy rate range to ...
Breaking Biology News(10 mins):NXT-ID Reports Second Shipment of Wocket Smart Wallets Underway to Early Access Pre-order Customers and Provides User Feedback 2NXT-ID Reports Second Shipment of Wocket Smart Wallets Underway to Early Access Pre-order Customers and Provides User Feedback 3NXT-ID Reports Second Shipment of Wocket Smart Wallets Underway to Early Access Pre-order Customers and Provides User Feedback 4Global Gesture Recognition Market in Automotive Sector Report 2015 - Growing Number of Partnerships 2NexID Begins Shipments Of Version 2.0 Fake-Finger-Detection Solution 2
(Date:4/27/2015)... 27, 2015  For about a century, a ... ability to utilize and catabolize glucose at a ... is called the ,Warburg phenomenon", that is an ... oxygen presence, leading to enhanced lactate generation. Even ... choose glucose fermentation. A variety of such abnormalities ...
(Date:4/27/2015)... - iCo Therapeutics ("iCo" or "the Company") (TSX-V: ICO) ... year ended December 31, 2014. Amounts, unless specified ... under International Financial Reporting Standards ("IFRS"). ... provide the outcome management and investors had hoped ... Therapeutics", said Andrew Rae , President & ...
(Date:4/27/2015)... HEIDELBERG , Alemania, April 27, 2015 ... patente para un nuevo receptor utilizando tecnología de descubrimiento ... no cubierta en el tratamiento de millones de pacientes ... anunciado hoy que ha recibido una patente en Europa ... el descubrimiento de Molecular Health de que EPHB4 es ...
(Date:4/27/2015)... Calif. (PRWEB) April 27, 2015 Dr. ... drug and chemical toxicity carries implications for advancing the ... April 28 at National University , the second-largest ... presentation by Dr. Hanzlik, a professor at the University ... metabolism and drug design, starts at 5 p.m. and ...
Breaking Biology Technology:Study Indicates Cancer Cells Alter Glucose Metabolism to Enhance Energy Production and Cell Growth 2iCo Therapeutics Announces Year End 2014 Financial Results 2iCo Therapeutics Announces Year End 2014 Financial Results 3iCo Therapeutics Announces Year End 2014 Financial Results 4Molecular Health obtiene la patente para un nuevo receptor 2Molecular Health obtiene la patente para un nuevo receptor 3Dr. Robert Hanzlik Discusses Pharmaceutical Testing Models at Event Hosted by National University 2Dr. Robert Hanzlik Discusses Pharmaceutical Testing Models at Event Hosted by National University 3
Cached News: