Featured Research

from universities, journals, and other organizations

How The Cell Finds Its Center

Date:
April 25, 2001
Source:
Rockefeller University Press
Summary:
Yeast cells place their nucleus in the center of the cell, where the nucleus helps define where the cell will later divide in half. Researchers now report evidence supporting a new theory for how the cell measures distance such that the nucleus ends up in the right place.

Yeast cells place their nucleus in the center of the cell, where the nucleus helps define where the cell will later divide in half. Researchers now report evidence supporting a new theory for how the cell measures distance such that the nucleus ends up in the right place.

The cells discussed by Phong Tran (Columbia University, New York) and colleagues in the April 16 issue of The Journal of Cell Biology are Schizosaccharomyces pombe or fission yeast cells. Tran et al. find that large bundles of microtubules, proteins that resemble train tracks, extend from the nucleus to either end of these cells. Previously workers had believed that the nucleus might be shuttled along these train tracks at the direction of some unknown signal. But Tran et al. gather evidence that the microtubules themselves are being used as an intracellular ruler.

The microtubules push against the end of the cell, thus pushing the nucleus away from the end of the cell. The likelihood of a microtubule bundle reaching the end of the cell, and thus having the opportunity to push against the end of the cell, drops off as the distance from the nucleus to the end of the cell increases. Thus, on average, microtubules will push more if the nucleus is close to the end of the cell, and the nucleus will be pushed back into the center of the cell.


Story Source:

The above story is based on materials provided by Rockefeller University Press. Note: Materials may be edited for content and length.


Cite This Page:

Rockefeller University Press. "How The Cell Finds Its Center." ScienceDaily. ScienceDaily, 25 April 2001. <www.sciencedaily.com/releases/2001/04/010417074626.htm>.
Rockefeller University Press. (2001, April 25). How The Cell Finds Its Center. ScienceDaily. Retrieved October 1, 2014 from www.sciencedaily.com/releases/2001/04/010417074626.htm
Rockefeller University Press. "How The Cell Finds Its Center." ScienceDaily. www.sciencedaily.com/releases/2001/04/010417074626.htm (accessed October 1, 2014).

Share This



More Plants & Animals News

Wednesday, October 1, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Attacking Superbugs

Attacking Superbugs

Ivanhoe (Oct. 1, 2014) — Two weapons hospitals can use to attack superbugs. Scientists in Ireland created a new gel resistant to superbugs, and a robot that can disinfect a room in minutes. Video provided by Ivanhoe
Powered by NewsLook.com
Cultural Learning In Wild Chimps Observed For The First Time

Cultural Learning In Wild Chimps Observed For The First Time

Newsy (Oct. 1, 2014) — Cultural transmission — the passing of knowledge from one animal to another — has been caught on camera with chimps teaching other chimps. Video provided by Newsy
Powered by NewsLook.com
Earth Has Lost Half Its Vertebrate Wildlife Since 1970: WWF

Earth Has Lost Half Its Vertebrate Wildlife Since 1970: WWF

Newsy (Sep. 30, 2014) — A new study published by the World Wide Fund for Nature found that more than half of the world's wildlife population has declined since 1970. Video provided by Newsy
Powered by NewsLook.com
Annual Dog Surfing Competition Draws California Crowds

Annual Dog Surfing Competition Draws California Crowds

AFP (Sep. 30, 2014) — The best canine surfers gathered for Huntington Beach's annual dog surfing competition, "Surf City, Surf Dog." Duration: 01:15 Video provided by AFP
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
 
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:  

Breaking News:

Strange & Offbeat Stories

 

Plants & Animals

Earth & Climate

Fossils & Ruins

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:  

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile iPhone Android Web
Follow Facebook Twitter Google+
Subscribe RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins