Navigation Links
A dual look at photosystem II using the world's most powerful X-ray laser
Date:2/14/2013

From providing living cells with energy, to nitrogen fixation, to the splitting of water molecules, the catalytic activities of metalloenzymes proteins that contain a metal ion are vital to life on Earth. A better understanding of the chemistry behind these catalytic activities could pave the way for exciting new technologies, most prominently artificial photosynthesis systems that would provide clean, green and renewable energy. Now, researchers with the U.S. Department of Energy (DOE)'s Lawrence Berkeley National Laboratory (Berkeley Lab) and the SLAC National Accelerator Laboratory have taken a major step towards achieving this goal.

Using ultrafast, intensely bright pulses of X-rays from SLAC's Linac Coherent Light Source (LCLS), the world's most powerful X-ray laser, the researchers were able to simultaneously image at room temperature the atomic and electronic structures of photosystem II, a metalloenzyme critical to photosynthesis.

"This is the first time that femtosecond X-ray pulses have been used for the simultaneous collection of both X-ray diffraction (XRD) and X-ray emission spectroscopy (XES) at room temperature of a metalloenzyme crystal," says Junko Yano, a chemist with Berkeley Lab's Physical Biosciences Division who was one of the leaders of this research. "Collecting both diffraction and spectroscopy data from the same crystal under the same conditions is required for a detailed understanding of the mechanisms behind metalloenzyme catalysis."

Yano is a corresponding author, along with Vittal Yachandra, also a chemist with Berkeley Lab's Physical Biosciences Division, and Uwe Bergmann, a physicist with SLAC, of a paper about this research in the journal Science. The paper is titled "Simultaneous Femtosecond X-ray Spectroscopy and Diffraction of Photosystem II at Room Temperature." (See below for full list of co-authors.)

Photosystem II, a large protein complex in green plants, algae and cyanobac
'/>"/>

Contact: Lynn Yarris
lcyarris@lbl.gov
510-486-5375
DOE/Lawrence Berkeley National Laboratory
Source:Eurekalert  

Page: 1 2 3

Related biology news :

1. Nature Methods study: Using light to control cell clustering
2. Scientists using holiday snaps to identify whale sharks
3. Triple-negative breast cancer subtypes identified using microRNA
4. Just add water: How scientists are using silicon to produce hydrogen on demand
5. Using snail teeth to improve solar cells and batteries
6. MVI and Inovio partner to develop malaria vaccines using innovative vaccine delivery tech
7. USDA explores using novel genetic labs for faster detection of E. coli
8. Improving the development of new cancer models using an advanced biomedical imaging method
9. Got food allergies? Thanks to UCLA, you can test your meal on the spot using a cell phone
10. Using computational biology for the annotation of proteins
11. Detective work using terahertz radiation
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
A dual look at photosystem II using the world's most powerful X-ray laser
(Date:10/31/2014)... in cities is good for attracting species, but it may ... University of Iowa study has found. , The researchers surveyed ... and recorded the abundance of two insects that interact with ... trees, black cherry and black walnut, they didn,t find a ... that feed on the walnuts and black cherries and a ...
(Date:10/31/2014)... been studying the behavior of approximately 300 wild ... They observed that ravens slowly build alliances through ... they also observed that these affiliative interactions were ... about 50 % of the cases these interventions ... ravens, intervening can be potentially risky when the ...
(Date:10/30/2014)... LANSING, Mich. – When most animals begin life, cells ... or a vital organ. However, mammals, including humans, are ... a different first choice – to become the protective ... It,s during this critical first step that research from ... published in the current issue of PLOS ...
Breaking Biology News(10 mins):Green spaces don't ensure biodiversity in urban areas 2Identifying the source of stem cells 2
... Nelson Laboratories ( www.nelsonlabs.com ) will offer free ... in San Jose, CA ... Those interested in a consultation should register at ... Rollins will also present, "Selection, Testing and Validation ...
... Wilhoit and Timothy Coolong from the University of Kentucky ... application of organic mulches more efficient. The research team ... in the August issue of HortTechnology . The ... to document its efficiency. "We modified an unroller so ...
... Why do crosses between closely related species fail to ... Axel Imhof of Ludwig-Maximilians-Universitaet (LMU) in Munich shows that ... - of certain key proteins are crucial in mediating ... to the same biological species, if matings between them ...
Cached Biology News:Nelson Laboratories to Offer Free Biocompatibility Consultations During BIOMEDevice San Jose 2New bale unroller design deemed effective 2Origin of species: Protein imbalances doom hybrids 2
(Date:10/30/2014)... Investor-Edge has initiated coverage on ... Medivation Inc. (NASDAQ: MDVN ), Pharmacyclics Inc. ... MKT: SYN), and Ironwood Pharmaceuticals Inc. (NASDAQ: IRWD). Free ... http://investor-edge.com/register . On Wednesday, October 29, ... the Dow Jones Industrial Average declined 0.18%, to finish ...
(Date:10/30/2014)... UK (PRWEB) October 29, 2014 Global ... of the world economic crisis during 2008-2009, especially in ... has recovered and currently is keeping to a growing ... output volume is utilized in the construction segment. In ... of pipes, profiles, tubing, sheets and rigid film. Moreover, ...
(Date:10/30/2014)... On October 26th at the Mid ... leading applied stem cell research scientist Neil Riordan, ... talks on New Techniques for Enhancing Stem Cell ... Cells. , Dr. Riordan focused on historical medical ... AlphaGEMS that include: wound healing; inflammation and pain ...
(Date:10/30/2014)... 2014 Rancho BioSciences , the ... manually curated public data source TCGA for ... the data is now available for other oncology groups. ... and internal data sources for their Pharma, Government and ... the data that becomes more easily accessible. Rancho ...
Breaking Biology Technology:Biotech Equities Movers and Shakers - Organovo Holdings, Medivation, Pharmacyclics, Synthetic Biologics, and Ironwood Pharma 2Biotech Equities Movers and Shakers - Organovo Holdings, Medivation, Pharmacyclics, Synthetic Biologics, and Ironwood Pharma 3Biotech Equities Movers and Shakers - Organovo Holdings, Medivation, Pharmacyclics, Synthetic Biologics, and Ironwood Pharma 4Biotech Equities Movers and Shakers - Organovo Holdings, Medivation, Pharmacyclics, Synthetic Biologics, and Ironwood Pharma 5Global Polyvinyl Chloride Demand Is on Upward Trend Now, Says Merchant Research & Consulting in Its Topical Study 2Global Polyvinyl Chloride Demand Is on Upward Trend Now, Says Merchant Research & Consulting in Its Topical Study 3Riordan-McKenna Institute Founders, Neil Riordan, PhD and Orthopedic Surgeon, Dr. Wade McKenna Present at the Mid American Regenerative and Cellular Medicine Showcase 2Riordan-McKenna Institute Founders, Neil Riordan, PhD and Orthopedic Surgeon, Dr. Wade McKenna Present at the Mid American Regenerative and Cellular Medicine Showcase 3Riordan-McKenna Institute Founders, Neil Riordan, PhD and Orthopedic Surgeon, Dr. Wade McKenna Present at the Mid American Regenerative and Cellular Medicine Showcase 4Rancho BioSciences Manually Curated TCGA Data Sets Available 2
... leading innovator in the development and commercialization of sensing systems ... (CBRNE) materials, today announced a media awareness initiative for JMAR,s ... online system for real-time detection of pathogens in water. ... ...
... release of GridGain 2.1 - the next version of its innovative ... ... January 13, 2009 -- GridGain Systems is proud to ... its innovative Java-based Open Cloud Platform. GridGain 2.1 provides the industry ...
... Coronary StentForms Alliance to Jointly Develop Drug Eluting ... announced today that that the company entered into ... incorporated subsidiary of Opto Circuits (OCI) Ltd., by ... Maxcor,s Genius MAGIC Cobalt Chromium Coronary Stent System ...
Cached Biology Technology:JMAR Technologies Raises Awareness of BioSentry -- A High Tech Counter to Bioterrorism 2JMAR Technologies Raises Awareness of BioSentry -- A High Tech Counter to Bioterrorism 3JMAR Technologies Raises Awareness of BioSentry -- A High Tech Counter to Bioterrorism 4GridGain 2.1 - Open Cloud Platform Enables Development of Native Cloud Applications 2GridGain 2.1 - Open Cloud Platform Enables Development of Native Cloud Applications 3Micell Forges Strategic Agreement to Develop Advanced Drug-Eluting Stents and Balloons 2Micell Forges Strategic Agreement to Develop Advanced Drug-Eluting Stents and Balloons 3
Prepared by multi-temperature ethanol fractionation with extensive charcoal treatment and dialysis.• Assay: ≥ 95 % (HPCE)• pH ~5.2 (10 mg/mL in 0.15 M NaCl)...
... DAPI (4,6-diamidine-2-phenylindole, dihydrochloride) is a ... nucleus blue in color. The ... contrast to red fluorochromes such ... or R-Phycoerythrin. DAPI can be ...
... (CYP450) metabolite postulated to play an autacoid ... In rat cerebral microvessels, 20-HETE is a ... is excreted mainly as the glucuronide conjugate. ... in human urine) is about 10-fold lower ...
Rabbit polyclonal to Quinaldic Acid ( Abpromise for all tested applications). Antigen: Synthetic peptide Quinaldic Acid conjugated to a protein carrier....
Biology Products: