Navigation Links
Temporary storage for electrons: Natural method of producing hydrogen
Date:11/2/2012

Scientists at the Max Planck Institute for Chemical Energy Conversion (MPI CEC) and the Ruhr-Universitt Bochum (RUB) have found through spectroscopic investigations on a hydrogen-producing enzyme that the environment of the catalytic site acts as an electron reservoir in the enzyme. Thus, it can very efficiently produce hydrogen, which has great potential as a renewable energy source. The research team describes their results in the journal "Angewandte Chemie".

Producing hydrogen with enzymes

The system analysed constitutes an enzyme that catalyses the formation and conversion of hydrogen. In its centre it has a double-iron core, and is therefore also called [FeFe] hydrogenase. Hydrogenases are of great interest for energy research, since they can efficiently produce hydrogen. However, new catalysts can only be developed given a deep understanding of their mode of action.

Electron transfer in several steps

In hydrogen production, two electrons get together with two protons. The research team showed that, as expected, the first electron is initially transferred to the iron centre of the enzyme. The second transfer on the other hand is to an iron-sulphur cluster that is located in the periphery. It thus forms a temporary storage for the second electron. This "super-reduced" state may be responsible for the extremely high efficiency of the hydrogenase. Subsequently both electrons are transferred in one step from the enzyme to the protons, so that hydrogen is generated. "Only the use of two different spectroscopic techniques made the discovery possible", says Agnieszka Adamska, a doctoral student at MPI CEC who carried out the spectroscopic studies.

10,000 molecules of hydrogen per second

"Up to 10,000 molecules of hydrogen per second can be generated by a single [FeFe] centre", says Camilla Lambertz, a postdoc at the RUB who prepared the biological samples for the project. The enz
'/>"/>

Contact: Dr. Camilla Lambertz
camilla.lambertz@rub.de
49-234-322-4496
Ruhr-University Bochum
Source:Eurekalert

Page: 1 2

Related biology news :

1. AVT Develops Biometrically Secure Medicine Storage and Retrieval System for Medbox RX
2. Medbox Safe Storage and Access Lockers Gaining Popularity
3. Medbox Developing a Patent Pending Wall-Mounted Biometric Kiosk for Storage of Sensitive Medicine Samples and Supplies for Doctors Offices.
4. Research provides new insights into dogs natural feeding behavior and finds they target a daily dietary intake that is high in fat
5. Study: DNA barcoding can ID natural health products
6. Scientists reveal how natural antibiotic kills tuberculosis bacterium
7. Natural regeneration building urban forests, altering species composition
8. Carnegie Mellon study shows skin-aging radicals age naturally formed particles in the air
9. Ben-Gurion University of the Negev receives $450,000 grant to conduct oil and natural gas research
10. Eco-computer with a natural wood look
11. Health care savings, naturally
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:7/22/2014)... by researchers in modifying properties of nanomaterials for application ... thanks to recent innovative studies conducted by scientists from ... use of a simple, efficient and low cost technique ... led by Professor Sow Chorng Haur from the Department ... that the properties of two different types of materials ...
(Date:7/22/2014)... a cost-effectiveness analysis of commercial diet programs and pills, ... the best value for the money. The Jenny Craig ... the most expensive option tested, according to researchers at ... The findings, published in the June issue of the ... health and weight-loss benefits per dollar spent as insurance ...
(Date:7/22/2014)... multinational, collaborative effort, researchers from the Icahn School of ... locations in the human genome associated with the risk ... on any psychiatric disorder to date, conducted with 80,000 ... point to biological mechanisms and pathways that may underlie ... the disorder, which has seen little innovation in drug ...
Breaking Biology News(10 mins):NUS scientists use low cost technique to improve properties and functions of nanomaterials 2NUS scientists use low cost technique to improve properties and functions of nanomaterials 3Study compares cost-effectiveness of weight-loss programs and drugs 2Study compares cost-effectiveness of weight-loss programs and drugs 3Mount Sinai scientists and international team shed new light on schizophrenia 2Mount Sinai scientists and international team shed new light on schizophrenia 3
... have determined the fine-scale genetic structure of the first ... change. , They used a high-throughput sequencing technique called ... , Their results, which focus on the pitcher ... the journal Proceedings of the National Academy of ...
... of the High Arctic climate roughly 50 million years ago ... explain how ancient alligators and giant tortoises were able to ... as they endured six months of darkness each year. ... Eocene period 52 to 53 million years ago, also has ...
... Male infertility is a common medical problem, affecting millions ... include an inability to make productive sperm. Now, using ... of Pennsylvania School of Medicine are beginning to identify ... problem. Shelley Berger PhD, the Daniel S. ...
Cached Biology News:Genetic structure of first animal to show evolutionary response to climate change determined 2Genetic structure of first animal to show evolutionary response to climate change determined 3New study shows how giant tortoises, alligators thrived in High Arctic 50 million years ago 2New study shows how giant tortoises, alligators thrived in High Arctic 50 million years ago 3New study shows how giant tortoises, alligators thrived in High Arctic 50 million years ago 4Swimming upstream: Molecular approaches to better understand male infertility 2Swimming upstream: Molecular approaches to better understand male infertility 3
(Date:7/22/2014)... Hussey Copper , a leader in ... copper announces Pullman Regional Hospital,s conversion of more than ... touch surface, at a nominal cost.  This reasonably priced ... other bacteria within 2 hours of exposure 1 and ... infectious diseases in its facilities. Pullman Regional ...
(Date:7/22/2014)... Quorum Review IRB, the industry leader in central ... called Quick Step™ . The offering went live on ... industry’s need for seamless study start-up with a large volume ... planning 50 or more North American investigator sites, as well ... count of 80 or more. Qualifying studies may also enroll ...
(Date:7/22/2014)... July 22, 2014 Biofeedback ... disorder (ADHD) is diagnosed, selecting medication to best treat ... Analyzing brain patterns by using electroencephalography (EEG) can help ... thus lower the risk of adverse drug events. , ... Biomarkers” in the current issue of the journal ...
(Date:7/21/2014)... Hills, IL (PRWEB) July 21, 2014 ... control, and simple programming, the new Cole-Parmer® ... Head is easy to operate for automated ... cycles for hands-free dispensing. The batch count function ... cumulative volume or totalizer tracks amount dispensed across ...
Breaking Biology Technology:Pullman Regional Hospital changes more than 1,100 touch points to Hussey Copper's MD-Cu29 antimicrobial copper to help protect against bacteria 2Pullman Regional Hospital changes more than 1,100 touch points to Hussey Copper's MD-Cu29 antimicrobial copper to help protect against bacteria 3Quorum Review IRB Launches New Quick Step™ Service for Large Clinical Trials 2Quorum Review IRB Launches New Quick Step™ Service for Large Clinical Trials 3Analyzing Brain Patterns with EEG Can Help Predict Effective Use of Medication 2Analyzing Brain Patterns with EEG Can Help Predict Effective Use of Medication 3New Easy-View Cole-Parmer Digital Gear Pump Drive Makes Performance Monitoring Effortless 2
... E May Help,Prevent, Cardiovascular Events in Hp2-2 Diabetes, ... SYI ) today announced new data demonstrating that,discontinuation ... may result,in an increased risk of heart attack and ... at the Annual Scientific,Sessions of the American Heart Association, ...
... First laboratory to be certified for A1c testing using ... Heritage Labs,International LLC, a division of Hooper Holmes ... A1c testing methods by the National,Glycohemoglobin Standardization Program (NGSP)., ... hemoglobin A1c, one,for testing whole blood specimens and the ...
... 11 Amicus Therapeutics,(Nasdaq: FOLD ), today announced ... at the 5th Annual Lazard Capital Markets Healthcare,Conference in ... p.m. EST., A webcast and audio archive of ... at http://www.amicustherapeutics.com . Participants,should allow approximately five to ...
Cached Biology Technology:Synvista Therapeutics Announces Data Further Demonstrating the Value of Haptoglobin Genotyping in Diabetic Patients During AHA Meeting 2Synvista Therapeutics Announces Data Further Demonstrating the Value of Haptoglobin Genotyping in Diabetic Patients During AHA Meeting 3Synvista Therapeutics Announces Data Further Demonstrating the Value of Haptoglobin Genotyping in Diabetic Patients During AHA Meeting 4Heritage Labs Announces A1c Test Certification Milestone 2Heritage Labs Announces A1c Test Certification Milestone 3
...
... designed for two-dimensional electrophoresis (2D) and ... in this marker have been selected ... a 2D gel. The pI range ... Mol wt: 17,000-89,000 Physical Form: ...
... Serial Analysis of Gene Expression (SAGE) ... technology. Agencourt offers a cost-effective outsourcing ... and LongSAGE libraries. Agencourt's SAGE sequencing ... project turnaround and long Phred20 read ...
... Affinity Life Sciences can provide custom microplate coating using advanced ... a variety of plate formats. We can also accommodate virtually ... range of 0.5-320 L):, , ... 96 well microplate, 384 ...
Biology Products: