Navigation Links
Bochum's researchers discover proton diode
Date:9/2/2010

Biophysicists in Bochum have discovered a diode for protons: just like the electronic component determines the direction of flow of electric current, the "proton diode" ensures that protons can only pass through a cell membrane in one direction. Water molecules play an important role here as active components of the diode. The researchers led by Prof. Dr. Klaus Gerwert (Chair of Biophysics at the RUB) were able to observe this through a combination of molecular biology, X-ray crystallography, time-resolved FTIR spectroscopy and biomolecular simulations. They report in the current international online edition of the journal Angewandte Chemie.

Protons drive the protein turbines

The proton diode plays an important role in the energy production of cells. Light-driven proton pumps - certain proteins that traverse the cell membrane - eject protons out of the cell, so that excess pressure is generated outside "much like the water pressure at a dam", explains Prof. Gerwert. Elsewhere, the protons push back into the cells to compensate the concentration gradient, and thereby drive the turbines of the cell, proteins known as ATPases. The energy thus released is converted into the universal fuel of the cells, ATP (adenosine triphosphate). "This process is a kind of archaic photosynthesis" explains Prof. Gerwert. "The light energy is ultimately converted into usable energy for the organism".

We used to believe in chance

The details of these processes are the subject of research. In particular, the role of water molecules in proteins has long been unclear. "Previously it was believed that the water molecules blundered into the proteins by chance, and fulfilled no particular function", says Gerwert. Manfred Eigen, born in Bochum in 1967, was awarded the Nobel Prize for chemistry because he was able to explain why water and ice protons are such rapid conductors. The current work shows that proteins also use precisely
'/>"/>

Contact: Prof. Dr. Klaus Gerwert
gerwert@bph.rub.de
49-023-432-24461
Ruhr-University Bochum
Source:Eurekalert  

Page: 1 2

Related biology news :

1. U-M researchers receive largest single collection of psoriasis DNA samples
2. Researchers analyze the environmentalists paradox
3. Researchers develop simulation to better understand the effects of sound on marine life
4. U of Alberta researchers discover important mechanism in fighting infection
5. UBC researchers unveil toolbox of MiniPromoters for gene research and therapy
6. Researchers to activate anti-cancer gene
7. ISU researchers develop hybrid protein tools for gene cutting and editing
8. Researchers discover novel mechanism protecting plants against freezing
9. UK researchers release draft sequence coverage of wheat genome
10. 2 Hispanic researchers from Argonne receive national acclaim
11. Researchers find gene responsible for neurodegenerative disease in dogs, possibly in humans
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Bochum's researchers discover proton diode
(Date:12/10/2014)...     Jifflenow ...   Jifflenow, a leading provider ... business-to-business (B2B) events, today announced a partnership with ... communication (NFC), Bluetooth low energy (BLE), and cloud-based ... Jifflenow will integrate its meeting scheduling ...
(Date:12/3/2014)... GLENDALE, Ariz. , Dec. 2, 2014 ... biometric hand readers, Inception Technologies is pleased to announce ... it easier for customers to collect the workforce data ... the problems that have been left by existing readers. ... to user interface, connectivity and modern technology. Older models ...
(Date:11/21/2014)... 20, 2014   Atmel® Corporation (NASDAQ: ... and touch technology solutions, today launched the industry,s first ... the widest V cc range from 1.7V to ... faster I 2 C bus communication speeds, and are ... making them ideal for consumer, industrial, computer, and medical ...
Breaking Biology News(10 mins):Jifflenow And ITN International Bring Cutting-Edge Badge Scanning Technology To B2B Events 2Jifflenow And ITN International Bring Cutting-Edge Badge Scanning Technology To B2B Events 3Inception Technologies to Release New Biometric Reader 2Atmel Launches Industry's First Wide-V(cc) Low-Power Temperature Sensor Family 2Atmel Launches Industry's First Wide-V(cc) Low-Power Temperature Sensor Family 3Atmel Launches Industry's First Wide-V(cc) Low-Power Temperature Sensor Family 4
... the subway and heading for your destination when you realize ... moment, you feel disoriented, but a scan of landmarks and ... your location, and you make it to your appointment with ... adults, toddlers, rats, chicks and even fish routinely and automatically ...
... EVANSTON, Ill. --- Northwestern University researchers are the first to ... cartilage in vivo and without the use of expensive growth ... cells and produces natural cartilage. No conventional therapy can do ... of Feb. 1 by the Proceedings of the National ...
... how rapidly the Himalayan glaciers are retreating highlights the ... satellites. Since glaciers are among the most reliable ... a major influence on water availability, knowledge of the ... for climate scientists and governing bodies. A key to ...
Cached Biology News:Ability to navigate may be linked to genes, researcher says 2Ability to navigate may be linked to genes, researcher says 3Growing cartilage -- no easy task 2Glacier-melting debate highlights importance of satellites 2
(Date:12/22/2014)... Dec. 22, 2014  ( www.competitivehealth.com ) — Competitive ... medical bill review and advocacy service, has signed an ... WellCard Savings discount health services marketplace. 63% ... more than they expected to pay. As part of ... costs, WellCard Savings is pleased to offer medical bill ...
(Date:12/22/2014)... 22, 2014 Fertility Associates of Memphis ... Bank USA , a network of more than 20 ... partnership, patients have fast access to a national pool ... IVF . Fertility Associates of Memphis is the only ... treatment option. , Dr. William Kutteh , director ...
(Date:12/19/2014)... BioPlus Specialty Pharmacy (BioPlus), one ... of Nick Maroulis, Pharm.D. to the newly created position ... In this position, Dr. Maroulis will continue to manage ... of our multi-site pharmacies as the company expands. Dr. ... that time he has served in many different capacities ...
(Date:12/19/2014)... Dec. 19, 2014 Bina Technologies, Inc. (Bina, ... that they have been acquired by Roche (SIX: RO, ... privately held company that provides a big data platform ... (NGS) data for the academic and translational research markets. ... and will continue to focus on development of their ...
Breaking Biology Technology:WellCard Savings Announces CoPatient Medical Bill Review Service for Members 2Fertility Associates of Memphis Announces Partnership with Donor Egg Bank USA 2Fertility Associates of Memphis Announces Partnership with Donor Egg Bank USA 3BioPlus Specialty Pharmacy Promotes Dr. Nick Maroulis to Vice President of Specialty Pharmacy Services 2Bina Technologies is acquired by Roche. 2Bina Technologies is acquired by Roche. 3
... July 8 iZumi Bio, Inc. and Pierian, Inc. ... company, iPierian, Inc. Building on the iZumi infrastructure and ... cellular reprogramming to change the paradigm of drug discovery. ... development of new therapeutics using induced pluripotent stem (iPS) ...
... TREK Diagnostic Systems, a Magellan Biosciences business and premier ... labs, has received clearance from the U.S. Food and ... of YeastOne susceptibility products. TREK will make the drug ... the plate that best meets their requirements. The custom ...
... Immunotec Receives NHPD/Health Canada Authorization to Begin a Study on, ... Isolate (Immunocal(R)) in, Combination with Physical Exercise ... Cytokine Levels in Elderly Persons: A Randomized, ... Immunotec Inc. (TSX-V: IMM) announced today that the Natural Health ...
Cached Biology Technology:iZumi Bio and Pierian Merge to Form iPierian to Advance Cellular Reprogramming 2iZumi Bio and Pierian Merge to Form iPierian to Advance Cellular Reprogramming 3iZumi Bio and Pierian Merge to Form iPierian to Advance Cellular Reprogramming 4iZumi Bio and Pierian Merge to Form iPierian to Advance Cellular Reprogramming 5iZumi Bio and Pierian Merge to Form iPierian to Advance Cellular Reprogramming 6FDA Clears Caspofungin (Cancidas(R)) Susceptibility Testing for TREK Sensititre(R) YeastOne(R) in Vitro Diagnostics (IVD) Product Line 2FDA Clears Caspofungin (Cancidas(R)) Susceptibility Testing for TREK Sensititre(R) YeastOne(R) in Vitro Diagnostics (IVD) Product Line 32009: Immunotec announces important clinical research initiative: New study to be launched with the goal of improving the quality of the aging process 22009: Immunotec announces important clinical research initiative: New study to be launched with the goal of improving the quality of the aging process 3
... deparaffinize and perform Heat Induced Antigen Retrieval ... mounted on glass microscope slides. Deparffinization is ... high temperature used in HIER (over 90degrees ... by detergent. Formaldehyde fixation impairs or totally ...
... Bovine Calf Serum; U.S. ... seek an uncompromising quality; Low ... Collected from animals of US ... those who seek an uncompromising ...
Collected from animals of U.S. origin.Collected from animals of U.S. origin. *Can be used in cell growth studies and immunoassays. *Sterility tested, * Mycoplasma tested upon request, *Endoto...
...
Biology Products: