Navigation Links
Scientists study the catalytic reactions used by plants to split oxygen from water
Date:4/3/2012

s, blocked this effect of ammonia.

The study describes the coordinated changes that must occur in the protein to facilitate the reaction and shows that the strength of the hydrogen-bonded network is important.

"This research helps to clarify how ammonia inhibits the photosystem, which is something that researchers have been wondering about for many years," Barry explained. "Our work suggests that ammonia can inhibit the reaction by disrupting this network of hydrogen bonds."

The research also suggests that in design of artificial devices that carry out this reaction, sustaining a similar hydrogen-bonding network may be important. The stabilizing effect of trehalose discovered by Polander and Barry may also be important.

Beyond the importance of understanding the photosynthetic process, the work could lead to new techniques for producing hydrogen and oxygen using sunlight. One possibility would be to add a biomimetic photocatalytic process to a photovoltaic system producing electricity from the sun.

"In terms of providing new sources of energy, we still have lessons to learn from plants about how they carry out these critical processes," Barry said. "It would be a great advance for the planet to have new, sustainable, and inexpensive processes to carry out this reaction."

Ultimately, she hopes the full water oxidizing cycle can be explored and potentially harnessed or imitated for oxygen and energy production.

"We are only looking at a single part of the overall reaction now, but we would like to study the entire cycle, in which oxygen is produced, to see how the interactions in the water network change and how the interactions with the protein change," Barry said. "The work is another step in understanding how plants carry out this amazing series of photosynthetic reactions."


'/>"/>

Contact: John Toon
jtoon@gatech.edu
404-894-6986
Georgia Institute of Technology Research News
Source:Eurekalert  

Page: 1 2 3

Related biology news :

1. Scripps Research Institute scientists find promising vaccine targets on hepatitis C virus
2. Dartmouth scientists track radioactive iodine from Japan nuclear reactor meltdown
3. Genetic mutation depicted in van Goghs sunflower paintings revealed by scientists
4. UGA scientists reveal genetic mutation depicted in van Goghs sunflower paintings
5. Scientists win $2 million to study new pathway in development and maintenance of lymphoma
6. WileyChina.com - Now Featuring Bespoke Pages for China’s Life Scientists
7. Salk scientists open new window into how cancers override cellular growth controls
8. Scientists discover new method of proton transfer
9. Brandeis scientists win prestigious prize for circadian rhythms research
10. American Society of Plant Biologists honors early career women scientists
11. Scientists produce eye structures from human blood-derived stem cells
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Scientists study the catalytic reactions used by plants to split oxygen from water
(Date:8/28/2014)... expansion of marine protected areas is needed to protect ... to investigators from the Wildlife Conservation Society and other ... saving the largest numbers of species, often at the ... ecological functions. , Many vital ecological functions ... also are food for millions of people. This ...
(Date:8/28/2014)... (August 28, 2014) Researchers at the University of ... muscular dystrophy (FSHD) to be used for muscle regeneration ... potential therapies for FSHD. , The research is published ... Reports . , There is no treatment for FSHD, ... common type of muscular dystrophy. FSHD is an unusual ...
(Date:8/28/2014)... that could positively impact the global battle ... thanks to researchers in Penn State,s College ... made from the seaweed-derived food ingredient carrageenan ... provides a woman-initiated, drug-delivery vehicle that can ... infections during unprotected heterosexual intercourse, the researchers ...
Breaking Biology News(10 mins):Study finds marine protected areas inadequate for protecting fish and ocean ecology 2UMN researchers find animal model for understudied type of muscular dystrophy 2Sensory-tested drug-delivery vehicle could limit spread of HIV, AIDS 2Sensory-tested drug-delivery vehicle could limit spread of HIV, AIDS 3
... ON, CANADA -- Because Wisconsin and Ontario are similar ... produced, climate, and latitude, researchers in Ontario looked to ... climate on vegetable crop yield. According to researchers from ... the growing season is similar in the two locations, ...
... some entomologists, an apparent paradox exists: Despite choosing a ... spiders which range from mild disgust to extreme arachnophobia. ... of American Entomologist features the results of ... questions about their fear of spiders. Although most entomologists ...
... scientists, led by researchers from the University of Geneva (UNIGE),s ... today present a map that points to the genetic causes ... and Nature Biotechnology , offers the largest-ever dataset ... RNA. , Understanding how each person,s unique genome makes them ...
Cached Biology News:Weather, yield compared for horticultural crops in Wisconsin, southern Ontario 2Arachnophobic entomologists: When 2 more legs make a big difference 2Functional genetic variation in humans: Comprehensive map published 2
(Date:8/29/2014)... 29, 2014 Intrinsic Imaging, an ... GAMP® 5 compliant imaging core lab, announced today ... II clinical trial to assess a new treatment ... trial, Intrinsic Imaging will provide comprehensive imaging core ... and charter development, site qualification, site training and ...
(Date:8/28/2014)... “This kit has an improved extraction efficiency and ... 150 ppb,” said Mark Tess, PhD, Mycotoxin Product Manager for ... owners and USDA-GIPSA inspection agencies that have a need to ... place in a matter of minutes with nothing but our ... feed and grain before accepting it, but they no longer ...
(Date:8/28/2014)... Grove, PA (PRWEB) August 28, 2014 ... and create a culture that will allow individuals to ... are becoming increasingly important for employers looking to compete ... science industries are embracing this trend, as the sector ... fabric of a company, which will have real results ...
(Date:8/28/2014)... 2014  Armetheon, Inc. ( www.armetheon.com ), a ... late-stage cardiovascular drug candidates, today announced that it ... of financing. The Series A round was co-led ... participation from investors that included Atheneos Capital and ... Larry Hsu , the founder of Impax Laboratories. ...
Breaking Biology Technology:Intrinsic Imaging Awarded Phase II Clinical Trial to Assess New Treatment for Non-Hodgkin’s Lymphoma 2Klein Hersh International Leads Philadelphia Area Life Science Industry in Company Culture 2Klein Hersh International Leads Philadelphia Area Life Science Industry in Company Culture 3Armetheon Completes $7.0 Million Series A Financing 2Armetheon Completes $7.0 Million Series A Financing 3
... Quark Pharmaceuticals, Inc.,a development-stage pharmaceutical ... (RNAi)-based therapeutics, today announced the,presentation of ... Europe, taking place,September 16-18, 2008 in ... Mett, Hagar Kalinski, and Hagit Ashush, ...
... WALTHAM, Mass., Sept. 17 Repligen Corporation,(Nasdaq: RGEN ... Officer, Walter C. Herlihy, Ph.D., will present at the ... 2008 at 1:00,p.m. EDT at the Grand Hyatt Hotel, ... audio-webcast of the presentation will be available via,Repligen,s website ...
... CITY, Sept. 17 /PRNewswire-FirstCall/ - AEterna Zentaris Inc.,(NASDAQ: ... company focused on,endocrine therapy and oncology, today announced ... Dennis Turpin, CA, will present a,company overview at ... Conference on Tuesday, September 23, 2008 at 3:25 ...
Cached Biology Technology:Quark Pharmaceuticals Announces Poster Presentations at RNAi Europe 2008 2Quark Pharmaceuticals Announces Poster Presentations at RNAi Europe 2008 3Repligen to Present at the 2008 UBS Global Life Sciences Conference Wednesday, September 24th, 1:00 p.m. EDT 2Repligen to Present at the 2008 UBS Global Life Sciences Conference Wednesday, September 24th, 1:00 p.m. EDT 3
Because it is manufactured at our ISO 9001–certified facilities in Eugene, Oregon, we can guarantee that FluoroPure grade propidium iodide is greater than or equal to 98% pure by HPLC....
MOUSE ANTI GUINEA PIG T-CELLS (PAN):FITC Immunogen: Guinea pig peritoneal T-cells...
Prepared in 0.85% saline....
RABBIT ANTI HUMAN CYTOCHROME P450 1A1/2 Immunogen: Purified human CYP1A2 expressed in E.Coli ...
Biology Products: