Navigation Links
What green algae are up to in the dark
Date:2/14/2013

bacteria. First they introduced the corresponding genes of the green algae into the gut bacterium Escherichia coli, for example, the gene for the pyruvate:ferredoxin oxidoreductase. E. coli then produced the proteins according to this blueprint. Happe's team isolated them from the bacterial cells and examined them like a construction kit. In the test tube, the biologists analysed how different combinations of proteins interacted with each other under specific environmental conditions.

"Ancient enzyme" discovered

In so doing, they found out that, under stress in the dark, the algae switch to a metabolic pathway which is normally only found in bacteria or single-celled parasites. "Chlamydmonas has an evolutionarily ancient enzyme", explains Jens Noth from the working group Photobiotechnology. "With the help of vitamin B1 and iron atoms, it gains energy from the breakdown of sugars." This energy is then used by other green algal enzymes, the hydrogenases, to form hydrogen. The unicellular microalgae switch on this metabolic pathway when they suddenly encounter oxygen-free conditions in the dark. Because, like humans, the green algae need oxygen to breathe if they cannot draw their energy from sunlight. The formation of hydrogen in the dark helps the cells to survive these stress condition. "With this knowledge, we have now found another piece of the puzzle to get an accurate picture of H2 production in Chlamydomonas", says Thomas Happe. "In future, this could also help to increase the biotechnologically relevant light-dependent H2 formation rate."


'/>"/>
Contact: Prof. Dr. Thomas Happe
thomas.happe@rub.de
49-234-322-7026
Ruhr-University Bochum
Source:Eurekalert

Page: 1 2

Related biology news :

1. Cities can reduce greenhouse gas emissions by 70 percent, says U of T researcher
2. New guide will allow electric utilities to develop Green Button Web tools
3. Aarhus University builds research station in North Greenland
4. In beef production, cow-calf phase contributes most greenhouse gases
5. Analysis of Greenland ice cores adds to historical record and provide glimpse into climates future
6. Toward reducing the greenhouse gas emissions of the Internet and telecommunications
7. Ancient red dye powers new green battery
8. Rice cultivates green batteries from plant
9. Fire and ice: Wildfires darkening Greenland snowpack, increasing melting
10. Greenphire CEO Sam Whitaker speaks on Sunshine Act and Clinical Trial Payments
11. An energy conscious workforce: New research looks at how to encourage staff to go green
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:11/4/2014)... November 4, 2014   ... growth   Fuel3D , a developer of ... funding round totaling $6.4 million (£4 million). This funding builds ... earlier this year and paves the way for the commercial ... The funding round was led by Chimera Partners and ...
(Date:11/3/2014)... 3, 2014 Research and Markets has ... - Technologies, Markets and Companies" to their offering. ... and methods, which have already started to play an important ... is replacing the old fashioned bone marrow transplants. Role of ... bound to become a part of medical practice. ...
(Date:11/3/2014)... weight and preterm birth are linked to increased risk ... in the American College of Rheumatology (ACR) journal, ... weight and pre-term babies were not at greater risk ... , According to the ACR, 27 million Americans over ... Symptoms of OA range from mild to severe and ...
Breaking Biology News(10 mins):Fuel3D Secures $6.4 Million in Expansion Funding 2Fuel3D Secures $6.4 Million in Expansion Funding 3Global Cell Therapy - Technologies, Markets and Companies: 2014 Report 2Global Cell Therapy - Technologies, Markets and Companies: 2014 Report 3Preterm, low birth-weight babies may need new hips in adulthood 2
... and the debriefing today, the Russian State Commission has given ... CEST. Today,s go-ahead marks the last milestone along the ... tiny variations in the thickness of ice floating in the ... land, the mission will provide scientists with hard evidence on ...
... of Pittsburgh provides the first identification of a human ... in products from electronics to plasticsand in laboratory tests ... to the tiny components, according to findings published online ... open the door to the use of carbon nanotubes ...
... After years of preparation and anticipation, scientists who discover ... key question about Alzheimer,s disease: Will drugs that block ... called amyloid-beta slow the progression of the devastating disease? ... Chemical & Engineering News (C&EN), ACS, weekly newsmagazine, ...
Cached Biology News:CryoSat-2 ready for launch 2Pitt-led study identifies human enzyme that breaks down potentially toxic nanomaterials 2Pitt-led study identifies human enzyme that breaks down potentially toxic nanomaterials 3
(Date:11/21/2014)... November 21, 2014 2014 Deep ... Industryā€¯ is a professional and in-depth research report ... ferrocyanide information, like its definition, classification, application, ... overview. This report covers the international market analysis, ... (such as the US, Europe, Asia, China, Japan ...
(Date:11/21/2014)... , Nov. 20, 2014 /CNW/ - Aequus Pharmaceuticals ... announce that it has closed a brokered private ... for approximately C$3.7 million.  Cormark Securities Inc. and ... the Brokered Offering for a syndicate of agents ... Financial Corp. (collectively the "Agents"). Concurrently with the ...
(Date:11/18/2014)... SAN BRUNO, Calif. , Nov. 18, 2014 ... is a platinum sponsor of the 10th Annual World Stem ... and regenerative medicine stakeholders. The 2014 World Stem Cell Summit ... San Antonio, Texas . ... the discovery and development of lifesaving cures and therapies, convening ...
(Date:11/18/2014)... pH measurement and control is vital in a ... food and beverage industries. But what exactly is pH, ... sensors work? METTLER TOLEDO has produced a guide to ... these questions and more. , METTLER TOLEDO provides a ... The actual sensor, the pH electrode, is therefore the ...
Breaking Biology Technology:Sodium Ferrocyanide Market: Analysis for Global & China Regions Development Trends Available at DeepResearchReports.com 2Sodium Ferrocyanide Market: Analysis for Global & China Regions Development Trends Available at DeepResearchReports.com 3Aequus Pharmaceuticals closes $4.2 million private placement financing 2Aequus Pharmaceuticals closes $4.2 million private placement financing 3Cord Blood Registry Sponsors 2014 World Stem Cell Summit 2Cord Blood Registry Sponsors 2014 World Stem Cell Summit 3pH Guide from METTLER TOLEDO Explains Measurement, Theory and Practice of pH Applications 2
... Jan. 28, 2011 Neuralstem, Inc. (Amex: ... with ReNeuron, Ltd. ending litigation between the parties.  The ... against ReNeuron in Neuralstem, Inc. v. ReNeuron, Ltd. ... pending in the United States District Court for the ...
... WASHINGTON, Jan. 27, 2011 Following are the comments ... (D-Ore.) on USDA,s announcement Thursday that the agency will ... engineered (GE) alfalfa, a key commodity in dairy farming, ... GE crop approved for widespread planting. Leahy and DeFazio ...
... Scientists have created a diamond-like lattice composed of gold ... place by strands of DNA. The structure a ... pieces known as capsids, linked by the very stuff ... scientists, ability to combine an assortment of materials to ...
Cached Biology Technology:Neuralstem, Inc. Settles Litigation Against ReNeuron, Ltd. 2USDA's Decision Thursday on Genetically Engineered Alfalfa -- Leahy and DeFazio Warn About USDA Decision Lifting All Protections for Organic and Conventional Farmers 2A mix of tiny gold and viral particles -- and the DNA ties that bind them 2
... 100 ml supplied as a 5x ... antibodies from membrane-bound proteins without destroying ... chemiluminescent or radioisotopic signals from blots. ... blots. Supplied as a 5X solution ...
...
... The Helios gene gun optimization kit ... in optimizing parameters affecting particle delivery with ... 0.25 g each of 0.6 micrometer, 1.0 ... included is a cartridge kit, that provides ...
... Tecans fully automated solution for cell ... automation for cell-line maintenance, expansion, harvesting ... system built upon standard, industry proven ... handling configuration capable of both rapid ...
Biology Products: