Navigation Links
Bacteria forge nitrogen from nitric oxide
Date:10/5/2011

This release is available in German.

The anaerobic oxidation of ammonia (anammox) is an important pathway in the nitrogen cycle that was only discovered in the 1980s. Currently, scientists estimate that about 50 percent of the nitrogen in the atmosphere is forged by this process. A group of specialized bacteria perform the anammox reaction, but so far scientists have been in the dark about how these bacteria could convert ammonia to nitrogen in the complete absence of oxygen. Now, 25 years after its discovery, they finally solved the molecular mechanism of anammox.

Anammox bacteria are very unusual because they contain an organelle which is a typical eukaryotic feature. Inside this organelle, known as the "anammoxosome", the bacteria perform the anammox reaction. The membrane of the anammoxosome presumably protects the cells from highly reactive intermediates of the anammox reaction. These intermediates could be hydrazine and hydroxylamine, as microbiologists proposed many years ago. This was very exciting news because the turnover of hydrazine, a very powerful reductant also used as rocket fuel, had never been shown in biology. However, these early experiments were provisional and many open questions remained.

To finally unravel the pathway experimentally was a very difficult enterprise. Marc Strous from the Max Planck Institute in Bremen says: "The anammox organisms are difficult to cultivate because they divide only once every two weeks. Therefore we had to develop cultivation approaches suitable for such low growth rates. Even after 20 years of trials, we can still only grow the organisms in bioreactors and not in pure culture." In the present study, the researchers make use of the latest innovation in bioreactor technology for anammox cultivation: the membrane bioreactor. In such bioreactors the anammox organisms grow as suspended cell
'/>"/>

Contact: Marc Strous
mstrous@mpi-bremen.de
49-421-202-8822
Max-Planck-Gesellschaft
Source:Eurekalert  

Page: 1 2

Related biology news :

1. Disinfectants can make bacteria resistant to treatment
2. H. Pylori bacteria may help prevent some esophageal cancers
3. Scientists discover bacteria that can cause bone infections
4. Waste from gut bacteria helps host control weight, UT Southwestern researchers report
5. Gene against bacterial attack unravelled
6. Predatory bacterial swarm uses rippling motion to reach prey
7. Bacteria manage perfume oil production from grass
8. Nature study demonstrates that bacterial clotting depends on clustering
9. Battling bacteria in the blood: Researchers tackle deadly infections
10. Shifts in soil bacterial populations linked to wetland restoration success
11. New bacteria discovered in raw milk
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Bacteria forge nitrogen from nitric oxide
(Date:4/22/2014)... lead a five-year, $3 million study to determine whether ... transport of dissolved organic matter (DOM) through the Connecticut ... chemical composition and water quality of the watershed and ... Science Foundation,s MacroSystems Biology program, researchers will collect data ... in Canada and runs through five U.S. states, before ...
(Date:4/22/2014)... JUPITER, FL, April 22, 2014 Scientists from the ... identified a protein complex that plays a critical but ... , The study, which showed a novel role for ... 2014 in the journal eLife , a publisher ... Planck Society and the Wellcome Trust. , "This is ...
(Date:4/22/2014)... Inspired by the fist-like club of a mantis ... California, Riverside, in collaboration with University of Southern California ... composite materials that is more impact resistant and tougher ... we study the club of this tiny crustacean, the ... things we use every day," said David Kisailus, a ...
Breaking Biology News(10 mins):Connecticut River watershed study will assess impacts of extreme rain events 2Connecticut River watershed study will assess impacts of extreme rain events 3Scientists identify critical new protein complex involved in learning and memory 2Mantis shrimp stronger than airplanes 2Mantis shrimp stronger than airplanes 3
... MA Obesity is associated with a worse prostate ... genetic mutation, suggest results from a new study led ... Institute and Brigham and Women,s Hospital researchers. Among prostate ... a more than 50% increased risk of dying from ...
... trash could spell big trouble for marine life, starting with ... and the University of Exeter who report their evidence in ... Current Biology on December 2. Those marine worms play ... for other animals. Work by Stephanie Wright from the ...
... Vicente was recently awarded a grant of more than $2 ... continue Phase III of the Initiative for Maximizing Student Development, ... of Chemistry and Professor of Chemotherapy/Materials in the Department of ... the IMSD Program is giving us the opportunity to continue ...
Cached Biology News:Genetic mutation may play key role in risk of lethal prostate cancer in overweight patients 2Microplastics make marine worms sick 2LSU receives $2 million from NIH for biomedical sciences training for underrepresented students 2
(Date:1/15/2014)... 2014 Freeslate, Inc ., the ... that Lupin Limited, one of India’s top five pharmaceutical ... PharmD System for high throughput solid form screening. ... on a wide range of quality, affordable generic and ...
(Date:1/14/2014)... 2014 Carahsoft and CDS Federal Services ... 2014 at 2pm EST (11am PST), “Natural Language Processing: ... on how technology can turn raw, heterogeneous data into ... agencies. The online webinar will last approximately one hour. ...
(Date:1/14/2014)... New York, NY (PRWEB) January 14, 2014 ... coverage of Alliqua, Inc. (OTCQB: ALQA). Alliqua is an ... products to serve the wound care market. , Free ... Alliqua was restructured with a seasoned management team and ...
(Date:1/14/2014)... Toronto, Canada (PRWEB) January 14, 2014 ... and its motives and methods in product development and ... of the industry. This mistrust, fueled by concerns about ... further fed by reports of spectacular fines to the ...
Breaking Biology Technology:Lupin Selects Freeslate’s CM Protégé PharmD System to Accelerate Polymorph Screening for Drug Development 2Lupin Selects Freeslate’s CM Protégé PharmD System to Accelerate Polymorph Screening for Drug Development 3Webcast - Natural Language Processing: Converting Raw Data into Actionable Knowledge – Hosted by Carahsoft and CDS Federal Services 2EquitiesIQ Initiates Coverage of Alliqua, Inc. 2EquitiesIQ Initiates Coverage of Alliqua, Inc. 3The Sunshine Act: Necessary Regulation or Unnecessary Dysregulation? New Life Science Webinar Hosted by Xtalks and IRB Services 2The Sunshine Act: Necessary Regulation or Unnecessary Dysregulation? New Life Science Webinar Hosted by Xtalks and IRB Services 3
... molecules in a living cell is something that has long ... diamond, may well be able to do this and potentially ... for, hard-to-cure diseases such as cancer. In a ... Physics and the German Physical Society,s New Journal of ...
... & Co. Inc., a unit of Oppenheimer Holdings, is pleased ... as Managing Director in the Healthcare group of the Firm,s ... science business. He will report to Brian McCarthy, Managing Director ... 2003, Matthias had worked at JMP Securities, where he was ...
... FREMONT, Calif., May 18, 2011 Biomerix Corporation and ... Biomerix 3D Scaffold , a novel three-dimensional tissue ... the Biomerix 3D Scaffold to research institutions across Europe. ... polycarbonate polyurethane , the Biomerix 3D Scaffold is ...
Cached Biology Technology:'Critical baby step' taken for spying life on a molecular scale 2Biomerix Corporation Reaches European Distribution Agreement with Cellon S.A. 2
delta-like 1 homolog (Drosophila)...
...
... BMH 71-18 mutS and ES1301 mutS ... coli. Use of these strains prevents repair ... leading to high mutation efficiencies and making ... GeneEditor and Altered Sites II Mutagenesis Systems. ...
Polaroid black & white positive, 3 x 4 inch pack film, ISO 3000/ 36 ASA DIN (20 expsures). For use in the Polaroid Direct Copy Camera (PHC34)....
Biology Products: