Navigation Links
New mechanism for nutrient uptake discovered

n the complex," continued Loqué. "The pores can't function without this physical stimulation."

"The rapid chain-reaction among the different pores allows the system to shut down extremely fast and can even memorize previous exposures," noted co-author Wolf Frommer. "Imagine a large animal marking its territory. A sudden flow of ammonia could be toxic to the plant. If it weren't for a rapid-fire shutdown plants could die. The conservation of this feature in the related transporters in bacteria, fungi, plants, and animals suggests that an ancient organism, which was a precursor to all known organisms on Earth, had developed this feature because there was much more ammonia on the early Earth. The ubiquitous presence of this structure in all of the known ammonium transporters suggests that the regulation is still necessary today for all of these organisms—cyanobacteria in the ocean, fungi that grow on grapes and make our wine, plants that provide our food—and even in our kidneys, which excrete nitrogen. We also suspect other different types of transporters will be discovered to work in this way."

The scientists don't yet know what triggers the rapid shut-off. They think it might be a very common regulatory event called phosphorylation, where a phosphate molecule is introduced to another molecule, changing the latter, and preparing it for a chemical reaction. They have found a site for phosphorylation and are looking at this possibility further.

A leading expert in transporters, Professor Dale Sanders, head of the biology department at the University of York in the U.K. commenting on the work said: "Loqué, Frommer and co-workers have demonstrated very beautifully how plant ammonium transporters are controlled. A switch domain in the protein facilitates rapid and sensitive control of ammonium transport to preclude over-accumulation of an ion that is beneficial at low concentrations, but potentially toxic at high concentrations. This is a ma
'"/>

Source:Carnegie Institution


Page: 1 2 3

Related biology news :

1. A new mechanism of regulating RNA degradation
2. Plants, animals share molecular growth mechanisms
3. PET/MRI scans may help unravel mechanisms of prenatal drug damage
4. Researchers discover molecular mechanism that desensitizes us to cold
5. Chemists identify immune system mechanism for methamphetamine binges
6. Key mechanism in genetic inheritance during cell division identified
7. Researchers unlock mechanism creating jigsaw puzzle-like plant cells
8. Mouse gene shows new mechanism behind cardiac infarction in man
9. UCSD research reveals mechanism involved with type of fatal epilepsy
10. Ancient immune defense mechanism is no match for HIV-1
11. Malaria mechanism revealed
Post Your Comments:
*Name:
*Comment:
*Email:
TAG: New mechanism for nutrient uptake discovered

(Date:12/10/2014)... WINSTON-SALEM, N.C. , Dec. 9, 2014  Wake Forest ... medical education building for its School of Medicine. Funding ... a larger capital campaign that will be publicly launched ... will be located in the former 60 series R.J. ... Forest Innovation Quarter. Construction will begin immediately with plans ...
(Date:12/5/2014)... MOUNTAIN VIEW, Calif. , Dec. 4, 2014 ... and safety has boosted investments in new testing ... products has also given rise to a range ... driven by the requirements of Generation Y, which ... digital technologies. As a result, product development strategies ...
(Date:12/3/2014)... , Dec. 2, 2014 As part of ... Inception Technologies is pleased to announce the release of ... customers to collect the workforce data that they need. ... have been left by existing readers. Many such devices ... connectivity and modern technology. Older models force users to ...
Breaking Biology News(10 mins):Wake Forest Baptist to Build New Medical Education Facility In Wake Forest Innovation Quarter 2Wake Forest Baptist to Build New Medical Education Facility In Wake Forest Innovation Quarter 3Wake Forest Baptist to Build New Medical Education Facility In Wake Forest Innovation Quarter 4Emerging Technologies Enable Smarter Monitoring of Assets, Push Industrial Testing, Inspection and Monitoring Market 2Emerging Technologies Enable Smarter Monitoring of Assets, Push Industrial Testing, Inspection and Monitoring Market 3Emerging Technologies Enable Smarter Monitoring of Assets, Push Industrial Testing, Inspection and Monitoring Market 4Inception Technologies to Release New Biometric Reader 2
... 35 headwater basins in the United States and Canada found ... was less than expected in many locations, suggesting that some ... The study was just published in a special issue ... Ecological Research (LTER) network of 26 sites around the country ...
... new Rice University study this week in the journal Science ... -- from the realms of tectonic plates down to molecular bonds ... below ground. "Everything throughout history shows us that Earth does ... said Rice geochemist Cin-Ty Lee, the lead author of the study. ...
... New England is expected to experience a "moderate" regional ... in the Gulf of Maine to study the toxic algae ... no direct threat to human beings, however the toxins they ... clams which can cause paralytic shellfish poisoning (PSP) in humans ...
Cached Biology News:Impact of warming climate doesn't always translate to streamflow 2Copper chains: Study reveals Earth's deep-seated hold on copper 2Copper chains: Study reveals Earth's deep-seated hold on copper 3Researchers report potential for a 'moderate' New England 'red tide' in 2012 2Researchers report potential for a 'moderate' New England 'red tide' in 2012 3Researchers report potential for a 'moderate' New England 'red tide' in 2012 4
(Date:12/24/2014)... Dec. 23, 2014 Vermillion, Inc. (Nasdaq: ... gynecologic disease, announced today that investors including Oracle ... Fund LLC and several Vermillion directors have agreed ... of Vermillion,s common stock and warrants to purchase ... private placement.  Under the terms ...
(Date:12/24/2014)... Dec. 23, 2014 Sigma-Aldrich Corporation (NASDAQ: ... waiting period under the Hart-Scott-Rodino Antitrust Improvements Act ... on December 22, 2014, thereby completing the U.S. ... the acquisition of the Company by Merck KGaA, ... satisfies another condition to closing the transaction, which ...
(Date:12/24/2014)... and NEW YORK , Dec. ... its open-label pilot study of mazindol in children with ... and Therapy in December 2014 . ... in children with attention deficit/hyperactivity disorder" ( Konofal et ... 2014 Dec 1;8:2321-2332. eCollection 2014 ) shows that ...
(Date:12/22/2014)... ROCKVILLE, Md. , Dec. 22, 2014 ... MKT: SYN), a developer of pathogen-specific therapies ... focus on protecting the microbiome, today announced ... a Phase 1a clinical trial of SYN-004, ... the prevention of Clostridium difficile (C. ...
Breaking Biology Technology:Vermillion Announces Equity Financing of up to $18.9 Million; Suspends ATM Program 2Vermillion Announces Equity Financing of up to $18.9 Million; Suspends ATM Program 3Vermillion Announces Equity Financing of up to $18.9 Million; Suspends ATM Program 4Vermillion Announces Equity Financing of up to $18.9 Million; Suspends ATM Program 5Acquisition of Sigma-Aldrich by Merck KGaA, Darmstadt, Germany, Receives U.S. Antitrust Clearance 2Acquisition of Sigma-Aldrich by Merck KGaA, Darmstadt, Germany, Receives U.S. Antitrust Clearance 3Redefining ADHD: A New Approach & A Shift of Paradigm in ADHD Therapeutics 2Redefining ADHD: A New Approach & A Shift of Paradigm in ADHD Therapeutics 3Synthetic Biologics Announces Positive Topline Results from Phase 1a Trial of SYN-004 for the Prevention of C. difficile Infection 2Synthetic Biologics Announces Positive Topline Results from Phase 1a Trial of SYN-004 for the Prevention of C. difficile Infection 3Synthetic Biologics Announces Positive Topline Results from Phase 1a Trial of SYN-004 for the Prevention of C. difficile Infection 4Synthetic Biologics Announces Positive Topline Results from Phase 1a Trial of SYN-004 for the Prevention of C. difficile Infection 5
... over the Badger state pavilion at the annual BIO convention ... visit the New York State exhibit to breathe gardenia-scented oxygen ... has grown to be as competitive as biotechnology, most states, ... the crowd. Welcome to the world of bio-branding. , ,Wisconsins ...
... DEMOletter know that I've written regularly about so- called social ... columns have run under titles such as "I'm LinkedIn - ... networks to both user and investor. I wasn't being critical, ... model for these services. , ,But in recent weeks, ...
... is currently undergoing a historical transformation. Such ... War I, when the paper, brewing, automotive and ... , ,The change from an agriculture and manufacturing-based ... is inevitable. Wisconsin now finds itself competing ...
Cached Biology Technology:Whats in a name? Quite a bit, when youre competing in biotech 2Social networks and my big a-ha 2Social networks and my big a-ha 3Social networks and my big a-ha 4Educate, innovate and execute: Wisconsins model for success 2Educate, innovate and execute: Wisconsins model for success 3
Mouse VEGF R1/Flt-1 Allophycocyanin MAb (Clone 141522) Keywords: Receptor Tyrosine Kinase, RTK, VEGFR1, VEGF Receptor 1 Protein Family: Receptor Tyrosine Kinases, VEGF/PDGF Family...
Evi-1 Antibody Shipping Temperature: Cold Storage Temperature: -20C...
Immunogen: Synthetic peptide: N(171) H G F L S A D Q QL I K(183) Storage: -20 C, Avoid Freeze/Thaw Cycles...
HIV-1 TAT (vN-21)...
Biology Products: