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:8/31/2014)... A new blood test provides a fast and ... new proof-of-concept study shows. The newly developed test ... to detect active tuberculosis in children. The test ... tests in combination with speed of a blood ... for the diagnosis of tuberculosis in children, particularly ...
(Date:8/31/2014)... not busy attacking us, germs go after each other. ... disaster for the infected microbes: Sometimes viruses actually carry ... expand its diet or better attack its own hosts. ... immune system would robotically destroy anything it recognized as ... have now revealed that one variety of the bacterial ...
(Date:8/31/2014)... Over the past several decades, malaria diagnosis has changed very ... technician smears the blood across a glass slide, stains it ... the Plasmodium parasite, which causes the disease. This approach gives ... blood an important measure of disease severity but ... , A research team from the Singapore-MIT Alliance for Research ...
Breaking Biology News(10 mins):New tuberculosis blood test in children is reliable and highly specific 2Discovery reveals how bacteria distinguish harmful vs. helpful viruses 2Discovery reveals how bacteria distinguish harmful vs. helpful viruses 3A new way to diagnose malaria 2A new way to diagnose malaria 3
... such, they are relatively well studied, especially in the ... most thoroughly. First eastern US butterfly species were described ... himself, over 250 years ago. For the last ... species diversity of eastern butterflies, and every nook and ...
... A*STAR,s Institute of Molecular and Cell Biology (IMCB) have ... the pathway leading to memory and learning impairment. The ... and could be used to explain defects in the ... established knowledge could potentially facilitate exploration of strategies to ...
... plant that,s been known to drive people daffy. It,s one ... a hard-to-control weed in ponds and small lakes. But it,s ... source to produce pharmaceuticals. Now, the genome of Greater Duckweed ... as a biofuel source a big boost. In a paper ...
Cached Biology News:Two new butterfly species discovered in eastern USA 2A*STAR scientists discover protein's role in human memory and learning functions 2Pond-dwelling powerhouse's genome points to its biofuel potential 2Pond-dwelling powerhouse's genome points to its biofuel potential 3Pond-dwelling powerhouse's genome points to its biofuel potential 4
(Date:8/29/2014)... Pittcon is pleased to announce that the 2015 ... Scientific, have organized a session on nanotechnology for presentation ... Asia’s largest analytical and scientific instruments show, will be ... , The four speakers in this U.S. symposium, “Thinking ... Single Cells” will present their use of nanotechnology to ...
(Date:8/29/2014)... Local veterinarian, Dr. Keith Clement, and his ... to participate in an investigational study of donor stem ... of this study is to determine if a single ... arthritically affected joints can help reduce pain and inflammation ... current investigational study must be older than nine months, ...
(Date:8/29/2014)... Due to a misstatement posted by the Family ... Technology Center, LLC ( ASCTC ) was reported as an ... might benefit ALS patients. Because of ASCTC's exclusive focus ... and therapeutic applications, FRC listed ASCTC as one of several ... wish not to support research that requires the death of ...
(Date:8/29/2014)... 29, 2014 Intrinsic Imaging, an ... GAMP® 5 compliant imaging core lab, announced today ... II clinical trial to assess a new treatment ... trial, Intrinsic Imaging will provide comprehensive imaging core ... and charter development, site qualification, site training and ...
Breaking Biology Technology:Fifth Annual U.S. Symposium at JASIS Organized by Pittcon’s Program Chairman Hub MacDonald 2Burnt Hills Veterinary Hospital Seeks Candidates for an Investigational Study of Stem Cells for Dogs with Arthritis 2The Adult Stem Cell Technology Center, LLC Declines ALS Ice Bucket Challenge Donors Wishing to Support Ethical Research for New Stem Cell Therapies 2The Adult Stem Cell Technology Center, LLC Declines ALS Ice Bucket Challenge Donors Wishing to Support Ethical Research for New Stem Cell Therapies 3Intrinsic Imaging Awarded Phase II Clinical Trial to Assess New Treatment for Non-Hodgkin’s Lymphoma 2
... Idenix Pharmaceuticals, Inc., (NASDAQ: IDIX ) announced today ... quarter of 2011 on Monday, August 8, 2011 after U.S. ... conference call at 4:30 p.m. ET on Monday, August 8, ... quarter of 2011 and provide an update on the company,s ...
... LOS ANGELES, July 21, 2011 Genesis Biopharma, Inc. ... today announced it has named retired four-star General Merrill ... served nearly four decades in the U.S. Air Force ... 1994.  The Genesis Biopharma Board now consists of 7 ...
... 2011 Sangamo BioSciences, Inc. (Nasdaq: ... use of zinc finger nucleases (ZFNs) to produce genetically modified ... of the National Academy of Sciences (PNAS) , represents a ... tissue as a source for transplant into humans.   ...
Cached Biology Technology:Genesis Biopharma Names Former Member of the Joint Chiefs of Staff General Merrill McPeak to Board of Directors 2Sangamo BioSciences Announces Efficient Generation of Transgenic Pigs Using Zinc Finger Nuclease (ZFN) Technology 2Sangamo BioSciences Announces Efficient Generation of Transgenic Pigs Using Zinc Finger Nuclease (ZFN) Technology 3Sangamo BioSciences Announces Efficient Generation of Transgenic Pigs Using Zinc Finger Nuclease (ZFN) Technology 4
... immunosorbent assay (ELISA) test kits are ... for the detection of drugs and/or their ... intended for forensic use only. It is ... by a quantitative method such as GC/MS. ...
... inhibitor that noncovalently binds and inactivates neutral pancreatic ... RNase 1, T1, T2, H, U1, U2 or ... inhibitor in that it has a more robust ... RNase in the absence of DTT or other ...
...
UGT1A7 (E-15)...
Biology Products: