Navigation Links
When green algae run out of air
Date:6/21/2013

and biochemical analyses. "One thing became clear very quickly", says Dr. Anja Hemschemeier from the Work Group Photobiotechnology. "Algae in which we switched this gene off could hardly grow without oxygen." From previous studies it is known that in many organisms, haemoglobin detoxifies nitric oxide, because an overdose of this gas poisons the cells. The biologists therefore tested whether green algae which are no longer able to form haemoglobin after genetic manipulation die of nitric oxide poisoning. Their expectations: the green algae should fare better if the gas is removed using a chemical scavenger. "Surprisingly, then the algae were not able to grow at all", says Hemschemeier. The researchers concluded that, under oxygen-free conditions, haemoglobin and nitric oxide are in cahoots.

Nitric oxide signals: "no oxygen!"

Nitric oxide acts in many living organisms as a signalling molecule apparently also in green algae. Experiments in vitro have shown that the green algal haemoglobin interacts with nitric oxide. When the researchers artificially introduced the gas to the single cell organisms, certain genes became active that are otherwise only "turned on" in the absence of oxygen. "From all this data we can conclude that Chlamydomonas uses nitric oxide to pass on the 'no oxygen!' signal within the cell, and that our haemoglobin is involved in this process", Happe sums up. His team wants to go on exploring the role of this protein in green algae, as the biologists have discovered another eleven haemoglobin genes in the organism. "Now things are really getting going", says the Bochum scientist. "The map of haemoglobin research has many blank spots that we want to fill with content. The fact that a single cell requires twelve haemoglobin proteins indicates that these fulfil finely tuned functions in the cell."


'/>"/>

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

Page: 1 2

Related biology news :

1. Too green to be true? Researchers develop highly effective method for converting CO2 into methanol
2. Lab experiments question effectiveness of green coffee bean weight-loss supplements
3. Wood not so green a biofuel
4. Research on geological storage of CO2 to reduce greenhouse gas emissions
5. Living biofilters could reduce greenhouse gas emissions
6. Elevated carbon dioxide making arid regions greener
7. Recovery of Hawaiian green sea turtles still short of historic levels, Stanford-led study suggests
8. Going green: Nation equipped to grow serious amounts of pond scum for fuel
9. Cameroon researcher wins prestigious Green Oscar
10. Zeal to ensure clean leafy greens takes bite out of riverside habitat in California
11. More food and greener farming with specialised transporters for plants
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:9/19/2014)... which over thousands of years has adapted to the arctic ... makes the cold dangerous for you. , This is happening ... the cold provoking substance, called nonylphenol, comes from the use ... of being a endocrine disruptor, but when entering the worm ... to protect the cells in its body from cold damage. ...
(Date:9/19/2014)... legume plants regulate their symbiotic relationship with soil ... through the plant structure from leaves into the ... in the roots. This collaborative study was conducted ... Biology, the Graduate University for Advanced Studies (SOKENDAI), ... in Japan. , Legumes, an important plant ...
(Date:9/18/2014)... A new GSA Bulletin study uses tree ... Puerco and Chaco Wash in northern New Mexico, USA. ... cedar and willow, investigators were able to precisely date ... then combined this data with aerial imagery, LiDAR, longitudinal ... these arroyos. , Arroyos are deep, oversized channels that ...
Breaking Biology News(10 mins):Environmental pollutants make worms susceptible to cold 2Environmental pollutants make worms susceptible to cold 3For legume plants, a new route from shoot to root 2Tree rings and arroyos 2Tree rings and arroyos 3Tree rings and arroyos 4Tree rings and arroyos 5Tree rings and arroyos 6Tree rings and arroyos 7
... ever had trouble sleeping can attest to the difficulties at work ... for ideal health and productivity, but what if five to six ... negatively affected? A team of researchers at Brigham and Women,s ... yourself to be, that lack of sleep can influence the way ...
... People for the Ethical Treatment of Animals (PETA) Foundation ... today alleging that the European Chemicals Agency (ECHA) is ... investigating cases in which animal testing could be avoided ... complaints about maladministration in EU institutions and agencies, and ...
... Mass., July 26, 2012  Aware, Inc. (NASDAQ: AWRE ), ... today reported financial results for its second quarter ended June 30, ... was $5.3 million, a decrease of 10% compared to $5.9 million ... second quarter of 2012 was $369,000 compared to a loss of ...
Cached Biology News:The longer you're awake, the slower you get 2PETA files complaint with European ombudsman over animal testing for REACH 2Aware, Inc. Reports Second Quarter 2012 Financial Results 2Aware, Inc. Reports Second Quarter 2012 Financial Results 3Aware, Inc. Reports Second Quarter 2012 Financial Results 4Aware, Inc. Reports Second Quarter 2012 Financial Results 5Aware, Inc. Reports Second Quarter 2012 Financial Results 6
(Date:9/18/2014)... HealthTronics, Inc ., a ... products and services, announced that a poster related ... versus external beam radiotherapy (EBRT) is being presented ... Association (MAAUA) Annual Meeting in Baltimore, Maryland September ... Cryosurgery and External Beam Radiation as Treatments for ...
(Date:9/18/2014)... DUBLIN, Ireland , September 18, ... ,Research and Markets ( http://www.researchandmarkets.com/research/czvg3s/biocompatible ) ... "Biocompatible Materials - Global Strategic ... offering. ,     (Logo: http://photos.prnewswire.com/prnh/20130307/600769) ,This report ... Materials in US$ Million by the ...
(Date:9/18/2014)... -- Research and Markets has announced the ... 2014" report to their offering. ... professional and in-depth study on the current state of ... provides a basic overview of the industry including definitions, ... market analysis is provided for the international markets including ...
(Date:9/18/2014)... Ky. , Sept. 18, 2014  Neogen Corporation ... has entered into a strategic agreement with Merck Animal ... Program. The Igenity Dairy Heifer Program ... essential information on the genetic potential of replacement dairy ... a calf is born, and is an excellent tool ...
Breaking Biology Technology:HealthTronics Announces Data Comparing Cryotherapy Versus Radiation for Treating Prostate Cancer Poster Presented at the American Urological Association Regional Meeting 2Biocompatible Materials - Global Strategic Business Report 2014 2Biocompatible Materials - Global Strategic Business Report 2014 3Global Human Albumin Industry Report 2014 2Global Human Albumin Industry Report 2014 3Merck Animal Health to market Neogen's dairy genomic program 2
... January 28 The Binding Site Limited,("The Binding ... company, today announces the publication of the first,international ... and management of multiple myeloma, a cancer of ... disorders. , The guidelines ...
... an announcement made recently by Astellas Pharma Inc., CV Therapeutics, ... received a letter dated November 13, 2008 from Astellas setting ... at a price of $16.00 per share, subject to due ... deliberation, with the assistance of its financial and legal advisors, ...
... PTS by Albemarle responds to the demand in ... 27 Leading specialty chemical company, Albemarle Corporation, ... company, Zymes LLC, have joined forces to scale-up ... The next generation technology promotes the clear ...
Cached Biology Technology:International Guidelines for First-Line use of Freelite(TM) in Diagnosis and Management of Multiple Myeloma to be Published in "Leukemia" 2International Guidelines for First-Line use of Freelite(TM) in Diagnosis and Management of Multiple Myeloma to be Published in "Leukemia" 3International Guidelines for First-Line use of Freelite(TM) in Diagnosis and Management of Multiple Myeloma to be Published in "Leukemia" 4International Guidelines for First-Line use of Freelite(TM) in Diagnosis and Management of Multiple Myeloma to be Published in "Leukemia" 5International Guidelines for First-Line use of Freelite(TM) in Diagnosis and Management of Multiple Myeloma to be Published in "Leukemia" 6International Guidelines for First-Line use of Freelite(TM) in Diagnosis and Management of Multiple Myeloma to be Published in "Leukemia" 7CV Therapeutics Statement on Unsolicited Proposal From Astellas 2CV Therapeutics Statement on Unsolicited Proposal From Astellas 3Albemarle Manufactures Zymes' PTS, the Lead Compound in a Breakthrough Solubilization Technology 2Albemarle Manufactures Zymes' PTS, the Lead Compound in a Breakthrough Solubilization Technology 3
Collected from sexually mature, mixed sex, mixed breed guinea pigs. Pricing: $120/unit for 1 - 10 units...
...
... Protein, 1. Based on the methodology ... kit gives essentially colorless backgrounds in ... Protein provides convenient, reproducible and sensitive ... in less than two hours.The visualization ...
Mouse monoclonal [IFR0104] to Salmonella enteriditis ( Abpromise for all tested applications)....
Biology Products: