Navigation Links
Single-celled bacterium works 24-7
Date:4/28/2008

ay-night cycle has a tremendous impact on the cells physiology, cycling on and off many vital metabolic processes, not just the obvious ones.

Among the obvious cycling processes are photosynthesis and nitrogen fixation. It is difficult to perform these two functions in the same cell because the two processes are at odds with one another. Fixing nitrogen requires nitrogenase, a catalyst that helps the chemical reaction move forward. Unhelpfully, the oxygen produced by photosynthesis degrades nitrogenase, making nitrogen fixation difficult or impossible in photosynthetic organisms.

Other filamentous cyanobacteria perform photosynthesis and nitrogen fixation in different cells. As a single-celled bacterium, however, Cyanothece cannot separate these antagonistic processes in space. But it can separate them in time. While Cyanothece is active in the daytime for photosynthesis, this research shows that it also has quite the nightlife, unlike other cyanobacteria.

Agreeing with previous studies, this study found that Cyanothece genes for photosynthesis turn on during the day and genes for nitrogen fixation turn on at night. The surprise is the tremendous impact the day-night cycle has on the overall physiology of the cell.

It goes far beyond just the aspects of nitrogen fixation and photosynthesis, said Pakrasi, who also directs Washington Universitys International Center for Advanced Renewable Energy and Sustainability (I-CARES) to encourage and coordinate university-wide and external collaborative research in the areas of renewable energy and sustainability - including biofuels, carbon dioxide mitigation and coal-related issues. The university will invest more than $55 million in the initiative.

Cyanotheces Dark Period

To see the effect of day-night cycles on the overall physiology of Cyanothece, lead author Jana Stckel, Ph.D., Washington University post-doctoral researcher, and other members of this re
'/>"/>

Contact: Gayle Geren
geren@wustl.edu
314-935-7163
Washington University in St. Louis
Source:Eurekalert

Page: 1 2 3

Related biology news :

1. Bacterium sequenced makes rare form of chlorophyll
2. Researchers decode genetics of rare photosynthetic bacterium
3. Rain forest protection works in Peru
4. MIT works toward safer gene therapy
5. IdentiPHI Re Launches SAFmodule Software to Secure Novell(R) Networks
6. IdentiPHI Re Launches SAFmodule Software to Secure Novell(R) Networks
7. Alternative food networks connect ethical producers and consumers and can lead to healthier eating
8. Workshops on biotechnology and water for science journalists
9. MIT works toward engineered blood vessels
10. Solidus Networks, Inc. Seats New Board of Directors
11. ESFs workshop restores good name of sugar
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:8/22/2014)... DUBLIN , August 22, 2014 ... Markets ( http://www.researchandmarkets.com/research/mtm27l/biometrics_market ) has announced the ... North America 2014-2018"  report to their ... , , ,Biometrics is a technology ... individuals based on their physical or ...
(Date:8/22/2014)... Thomson Reuters , a leading source of information ... the University of California, Riverside in its 2014 list ... our times." , To generate the list, the company ... researchers whose published work has had enormous impact. , ... 3,200 individuals who published the greatest number of highly ...
(Date:8/22/2014)... the 29th Annual International Papillomavirus Conference shows that ... combats three types of human papillomavirus, including the ... cancer. , When tested in several cultured human ... HPV-18 and HPV-11 cells, according to Louise T. ... the findings at the Seattle conference. The National ...
Breaking Biology News(10 mins):Biometrics Market in North America 2014-2018: Key Vendors are 3M Cogent, Cross Match, NEC and Safran SA 2Biometrics Market in North America 2014-2018: Key Vendors are 3M Cogent, Cross Match, NEC and Safran SA 35 UC Riverside scientists among world's most influential scientific minds 2
... 2013) The world,s leading conservation organizations have joined together ... eastern lowland gorilla ( Gorilla beringei graueri ). Found ... Democratic Republic of Congo (DRC), Grauer,s gorilla is not only ... largest primate in the world. With their entire range ...
... advance toward overcoming a major barrier to tapping the ... medicine in developing new and more effective modern drugs. ... Information and Modeling . Andreas Bender and ... modern medicine. In the world,s largest international clinical trial, ...
... World, the first international conference examining the critical link ... the University of Pennsylvania from Wednesday, March 13, through ... Penn Institute for Urban Research (Penn IUR), in partnership ... Steering Committee representing nine schools and six centers, is ...
Cached Biology News:Gorillas caught in the crossfire in the DRC 2Gorillas caught in the crossfire in the DRC 3Penn conference tackles complex relationship between urbanization and food 2
(Date:8/22/2014)... August 22, 2014 The Global and ... study on the current state of the Diabetes Drug ... a basic overview of the industry, including definitions, applications ... domestic market analysis are provided with a focus on ... A comparison between the international and Chinese situation is ...
(Date:8/22/2014)... Canada (PRWEB) August 22, 2014 ... in model organisms can be accelerated by exome ... and manufacturing technologies, the custom SeqCap EZ Developer ... research. , Mr. Watson will additionally present how ... with commercially available human and mouse exome kits. ...
(Date:8/21/2014)... team including DESY scientists has observed tiny quantum vortices ... in the journal Science that the exotic ... nanodroplets. It is the first time that the quantum ... of what is known as superfluid helium, have been ... expectations," says Andrey Vilesov of the University of Southern ...
(Date:8/21/2014)... The College of New Rochelle announced ... the Mid-Hudson Region to be designated as a START-UP ... from qualified “high-technology” businesses that align with the College’s ... have been selected for the START-UP NY program and ... stimulate economic development in New York by growing business ...
Breaking Biology Technology:Diabetes Drugs Industry Growth Analysis in Global, China Regions Research Report Available at DeepResearchReports.com 2Diabetes Drugs Industry Growth Analysis in Global, China Regions Research Report Available at DeepResearchReports.com 3Efficient Identification of Protein-Coding Variants in a Model Organism Through Exome Sequencing, New Webinar Hosted by Xtalks 2Scientists observe quantum vortices in cold helium droplets 2The College of New Rochelle Becomes First Private College in Mid-Hudson Region to Earn START-UP NY Designation 2The College of New Rochelle Becomes First Private College in Mid-Hudson Region to Earn START-UP NY Designation 3
... Accera Inc., a privately,held biotechnology company focused on ... it has appointed William,T. Poncy, M.B.A., as vice ... commercial launch of Ketasyn (AC-1202) as a medical ... Alzheimer,s disease. "Given his strong track record ...
... Assay Development, Biomarker Identification ... and ADME/Tox Applications, ... MCET), entered into a worldwide,exclusive license and technology purchase agreement ... human liver cell lines. Corning paid MultiCell a license ...
... Alliance, the leading,management consulting firm specializing in the pharmaceutical ... as one of the best,places to work in the ... Business Journal, ranking third among midsize companies. The award,was ... annual Best,Places to Work luncheon and awards ceremony on ...
Cached Biology Technology:Accera, Inc. Names William T. Poncy Vice President of Commercial Development 2Accera, Inc. Names William T. Poncy Vice President of Commercial Development 3MultiCell Technologies Signs Worldwide Exclusive License Agreement With Corning Incorporated 2MultiCell Technologies Signs Worldwide Exclusive License Agreement With Corning Incorporated 3Campbell Alliance Named 'Best Place to Work' by Triangle Business Journal 2
... Construction KitTM allows graphic manipulation of DNA ... has an award winning interface design that ... addition to providing sophisticated drawing capabilities for ... the "Best Plasmid Mapping Software" by the ...
... Quality ISO 9001:2000 Certified ... All Precedures Validated, SOP's Training ... Process for All Procedures GLP Documentation Upon ... one stop shopping point for all your ...
...
...
Biology Products: