HOME >> BIOLOGY >> NEWS
What's shaped like a pear and has two genomes? Check the pond

Rockville, MD--If you could peer microscopically into the closest freshwater pond, you'd hesitate before dipping a toe. Amid the murky water, you'd probably notice an oddly furry, pear-shaped organism gliding along--and gobbling up everything in its path.

This tiny predator has a big name--Tetrahymena thermophila--and a big fan club among scientists, as a star organism for research into how cells work.

Scientists have now sequenced, assembled, and analyzed T. thermophila's macronuclear genome. Their work, reported in today's issue of Public Library of Science (PLoS) Biology, explains the organism's impressive versatility. Rather than dividing labor into several types of cells, as humans and other multicellular organisms do, T. thermophila divides its activities, either into different places inside a cell or by changing the cell over time. It is a master multi-tasker.

"This organism is a true generalist," says evolutionary biologist Jonathan A. Eisen, who led the Tetrahymena project while at The Institute for Genomic Research (TIGR) and is now at the University of California, Davis. "Whatever this unicell touches with its hairlike projections, it will try to eat. If it does not bump into anything, the organism will seek out food with diverse sensory systems. It can protect itself from radiation and other threats and also can fight back against competitors and predators. In short, versatility is its strength. Now, we can understand how this versatility works."

It takes plenty of genes. In fact, T. thermophila has roughly 25,000 genes--nearly as many as humans do. Although the organism is single-celled, it contains a genetic repertoire of seemingly more complex organisms. It shares, with humans and other animals, many genes and processes typically absent in single-celled organisms. That means Tetrahymena may be an ideal model organism for studies of the processes these genes encode.


'"/>

Contact: Kathryn Brown
kbrown@endpointcreative.biz
703-549-6641
The Institute for Genomic Research
28-Aug-2006


Page: 1 2 3

Related biology news :

1. Whats the backscatter of your beer?
2. Whats going on in the body? Advanced time-of-flight PET takes a superior look
3. Whats in the water? Estrogenic activity documented in fish caught in Pittsburghs rivers
4. A Cross-Disciplinary Look at Scientific Truth: Whats the Law to Do?
5. Whats the difference between mice and men?
6. Ossur repeats Popular Science Best of Whats New award
7. Whats next for gene therapy? Plastic
8. Whats nature worth? New computer models tell all
9. HPV Vaccine: Whats next
10. Anti-evolutionism in AmericaWhats ahead?
11. Ossurs Power Knee wins Popular Science magazines 2005 Best of Whats New Award

Post Your Comments:
*Name:
*Comment:
*Email:


(Date:4/18/2020)... ... April 17, 2020 , ... ... magnetic nano-beads to isolate minute bacterial particles that cause diseases. Using this ... difficult-to-detect micro-particles such as those making up Ebola and coronaviruses. , Ke ...
(Date:4/15/2020)... Va. (PRWEB) , ... April 15, 2020 , ... NDA ... MS, PhD, FAAPM, FHPS , former Senior Science Policy Advisor with the Center for ... in the Center for Devices and Radiological Health, has joined the firm as an ...
(Date:4/14/2020)... YORBA LINDA, Calif. (PRWEB) , ... April 14, ... ... networking website offering premier, interactive virtual events and webinars, continues to provide cutting-edge ... be held, April 21-23, Genetics Virtual Week will feature more than ...
Breaking Biology News(10 mins):
(Date:5/14/2020)... , ... May 12, 2020 , ... ... JCS as the new distribution partner for all personal care ingredients in Russia ... portfolio and DuPont preservative portfolio for personal care. , The GENENCARE®OSMS ...
(Date:5/14/2020)... ... May 13, 2020 , ... In collaboration with Sartorius, Biocompare ... the Life Science Lab . The comprehensive information source was created for life ... liquid handling to contamination control. , The content hub features the latest guidance ...
(Date:5/9/2020)... ... ... Worldwide Business with kathy ireland® will be LIVE streaming ... and Wednesday, May 13, 2020 at 8:00pm ET / PT – prime time ... Techolution and Bravado Pharmaceuticals . , As leaders in their ...
(Date:5/5/2020)... PARIS (PRWEB) , ... May 05, 2020 , ... ... appointing a high-profile CEO. Xavier Duburcq joins the group after 13 years at Altran, ... Chemicals. , Holding a PhD in Immunology and being a Pharmacist, Xavier was involved ...
Breaking Biology Technology:
Cached News: