Navigation Links
Scientists unlock mystery in important photosynthesis step
Date:2/19/2010

ns were having their effect," Redding explained. "Unraveling that has led to the discovery of how charge separation the moment when electromagnetic energy is converted to chemical energy actually occurs."

The team at the Max Planck Institute (MPI) was led by Alfred Holzwarth. His coworkers, Marc Mller and Chavdar Slavov, used lasers that sent out pulses of light lasting only 60 millionths of one billionth of a second to investigate the electron transfer processes in the two branches of PSI. This allowed them to look at extremely early events in the photosynthetic mechanism, events occurring in just a few picoseconds (a millionth of a millionth of a second), which is a time so short that a typical lattice atom could only execute a dozen oscillations on its lattice site.

This extremely sophisticated experiment and analysis required two years of laboratory effort from Rajiv Luthra, a graduate student in the Redding laboratory, to prepare a sample of sufficient purity to use. To interpret the observations, the researchers at the MPI had to develop a specific kinetic modeling approach that allowed them to estimate the individual electron transfer rates within the two branches. Comparison of mutants made in each branch with the non-mutant PSI was crucial to untangle these rates.

The current research is important for two separate reasons. Firstly, an understanding of how these complex processes work in Nature is crucial to future fundamental research in photosynthetic reaction centers, and this discovery may well be universal. Secondly, the use of two charge separation devices working cooperatively to maximize efficiency is a design theme that may well be applied in future efforts to create artificial photosynthetic devices.

Our society has urgent need of a renewable source of fuel that is widely distributed geographically, abundant, inexpensive, and environmentally clean. The use of solar energy to produce a clean fuel such as hydroge
'/>"/>

Contact: jenny Green
jenny.green@asu.edu
480-241-6608
Arizona State University
Source:Eurekalert  

Page: 1 2 3

Related biology news :

1. UK scientists working to help cut ID theft
2. Scientists show that mitochondrial DNA variants are linked to risk factors for type 2 diabetes
3. Comet probes reveal evidence of origin of life, scientists claim
4. Scientists link fragile X tremor/ataxia syndrome to binding protein in RNA
5. Male elephants get photo IDs from scientists
6. Scientists retrace evolution with first atomic structure of an ancient protein
7. Muscle mass: Scientists identify novel mode of transcriptional regulation during myogenesis
8. Carnegie Mellon scientists develop nanogels that enable controlled delivery of carbohydrate drugs
9. Clemson scientists shed light on molecules in living cells
10. Scientists tackle mystery mountain illness
11. T. rex quicker than Becks, say scientists
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Scientists unlock mystery in important photosynthesis step
(Date:12/17/2014)... , Dec. 15, 2014 The Defense ... it easier to detect and prevent counterfeit microcircuits ... Today the agency started performing an in-house microcircuit ... validate the authenticity of purchased microcircuits while increasing ... quality control measures will be conducted at DLA,s ...
(Date:12/15/2014)... 2014 Research and Markets ( ... "Global Facial Recognition Market 2015-2019" report ... http://photos.prnewswire.com/prnh/20130307/600769 Facial recognition is a ... recognition system measures the overall facial feature of ... and the distance between eyes. Facial recognition is ...
(Date:12/10/2014)... , Dec. 8, 2014 You,ve been here ... account but can,t remember your password, site key or the ... was your first grade teacher? Today, ... the app that will finally put an end to ... 1U TM . 1U leverages a user,s smartphone ...
Breaking Biology News(10 mins):Defense Logistics Agency Launches DNA Marking Capability to Strengthen Microcircuit Supply Chain 2Defense Logistics Agency Launches DNA Marking Capability to Strengthen Microcircuit Supply Chain 3Global Facial Recognition Market 2015-2019: Key Vendors are 3M Cogent, Cognitec Systems, NEC and Safran Group 2Global Facial Recognition Market 2015-2019: Key Vendors are 3M Cogent, Cognitec Systems, NEC and Safran Group 3The Password is Finally Dead: Launch of 1U Mobile App Eliminates Need for All Usernames and Passwords 2The Password is Finally Dead: Launch of 1U Mobile App Eliminates Need for All Usernames and Passwords 3
... Upton, NY -- An international team of researchers from ... the genomes of two important laboratory strains of E. ... other to produce proteins for basic research or practical applications. ... open a window to a deeper understanding of classical research ...
... 20, 2009Doctor of the Heart: My Life in Medicine ... best-selling author, and popular television commentator. Published by Mary ... account of his long and extraordinary career ( www.liebertpub.com/heart ... often referred to as "America,s Doctor." "Through his works ...
... disease for which there,s a proven cure, but nobody makes ... many around the world face every day and one Rice ... Internet. The Cure for Needy Project ( http://www.cureforneedy.org ... optimize small-molecule medications for orphaned diseases those for which ...
Cached Biology News:Genomes of 2 popular research strains of E. coli sequenced 2Genomes of 2 popular research strains of E. coli sequenced 3Just published: 'Doctor of the Heart: My Life in Medicine,' by Isadore Rosenfeld, M.D. 2Rice opens 'Cure for Needy' on the Web 2Rice opens 'Cure for Needy' on the Web 3
(Date:12/24/2014)... The report provides basic ... definition, classification, application and industry overview. This ... and product cost structure. Production is separated ... also covers upstream raw materials, equipment, downstream ... and proposals. In the end, the export ...
(Date:12/24/2014)... BEIJING , Dec. 23, 2014 ... or the "Company"), a leading fully integrated plasma-based ... today announced that its majority-owned subsidiary, Shandong Taibang ... Practices ("GMP") certification from the China Food and ... factor production facility. As previously disclosed in the ...
(Date:12/24/2014)... Fla. , Dec. 23, 2014  Rock Creek ... that it has filed a Clinical Trial Application (CTA) ... Healthcare products Regulatory Agency (MHRA) seeking regulatory approval to ... lead molecule, Anatabine Citrate. Contingent on the ... conduct a Phase I trial to assess the safety, ...
(Date:12/22/2014)... Dec. 22, 2014 /PRNewswire/ - RepliCel Life Sciences Inc. ... company focused on the development of autologous cell therapies, ... the University of Calgary in conjunction with co-authors from ... further validates the company,s ongoing clinical research using dermal ... pattern baldness. The paper entitled " Hair ...
Breaking Biology Technology:Worldwide Methyl Mercaptan Market 2015-2020 Forecasts on Development & Trends Now Available at ReportsnReports.com 2China Biologic Receives GMP Certification for New Coagulation Factor Facility 2China Biologic Receives GMP Certification for New Coagulation Factor Facility 3Rock Creek Pharmaceuticals Files Clinical Trial Application in the UK for Clinical Trials of Anatabine Citrate Formulations 2Rock Creek Pharmaceuticals Files Clinical Trial Application in the UK for Clinical Trials of Anatabine Citrate Formulations 3Newly Released Peer-Reviewed Publication Further Validates RepliCel's Use of Dermal Sheath Cup Cells to Treat Pattern Baldness 2Newly Released Peer-Reviewed Publication Further Validates RepliCel's Use of Dermal Sheath Cup Cells to Treat Pattern Baldness 3Newly Released Peer-Reviewed Publication Further Validates RepliCel's Use of Dermal Sheath Cup Cells to Treat Pattern Baldness 4Newly Released Peer-Reviewed Publication Further Validates RepliCel's Use of Dermal Sheath Cup Cells to Treat Pattern Baldness 5
... , COLUMBIA, Md., Aug. 19 Martek Biosciences Corporation ... results of its third quarter of fiscal 2009 on September 2, 2009, ... 4:45 p.m. ET Martek will conduct a conference call to discuss these ... live via webcast by visiting Martek,s web site at http://investors.martek.c ...
... , , , , ... WASHINGTON, Aug.19 A scholarly analysis of the keystone of indirect ... science fell far short of acceptable scientific standards. Professor John Mathews and ... exhaustive analysis of Searchinger et al. which revealed that the ...
... LAFAYETTE, Ind. - Researchers are adapting the same methods ... beams for a new class of "nanolithography" required to ... light to create the fine features in computer chips ... image of a mask onto a light-sensitive material, then ...
Cached Biology Technology:Analysis of Biofuels Indirect Land Use Effects Finds the Science Lacking: 'Too Diffuse and Subject To Too Many Arbitrary Assumptions To Be Useful for Rule-making.' 2Analysis of Biofuels Indirect Land Use Effects Finds the Science Lacking: 'Too Diffuse and Subject To Too Many Arbitrary Assumptions To Be Useful for Rule-making.' 3Nuclear fusion research key to advancing computer chips 2Nuclear fusion research key to advancing computer chips 3
LECHNER AND LaVECK MEDIUMfor the clonal growth of normal human bronchial and other epithelial cells. Requires additives. With glutamine.Recommended storage condition:oC to 8oCIntended use(s):research...
...
... System Modules Highly ... directional cloning into advanced ... vectors For ... Cloning Systems, the modules ...
... antibody-based immunoaffinity matrices, such as Sepharose ... without compromising antigen-antibody reactivity, the need ... has precluded the application of these ... CHEMICON Re-Blot Plus Western Blot Mild ...
Biology Products: