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

When green algae "can't breathe", they get rid of excess energy through the production of hydrogen. Biologists at the Ruhr-Universitt Bochum have found out how the cells notice the absence of oxygen. For this, they need the messenger molecule nitric oxide and the protein haemoglobin, which is commonly known from red blood cells of humans. With colleagues at the UC Los Angeles, the Bochum team reported in the journal "PNAS".

Haemoglobin an old protein in a new look

In the human body, haemoglobin transports oxygen from the lungs to the organs and brings carbon dioxide, which is produced there, back to the lungs. "However, scientists have known for years that there is not just the one haemoglobin", says Prof. Thomas Happe from the Work Group Photobiotechnology. Nature has produced a large number of related proteins which fulfil different functions. The green alga Chlamydomonas reinhardtii has what is known as a "truncated" haemoglobin, the function of which was previously unknown. Happe's team has deciphered its role in surviving in an oxygen-free environment.

In an oxygen-free environment, the green alga activates specific genes

When Chlamydomonas has no oxygen available, the algae transfer excess electrons to protons, creating hydrogen (H2). "For this to work, the green alga activates a certain gene programme and creates many new proteins", Happe explains. "But how exactly the cells even notice that oxygen is missing is something we did not know." The research team looked for genes that are particularly active when green algae have to live without oxygen and found a gene that forms the blueprint for a haemoglobin. In an oxygen-rich environment, however, this gene was completely idle.

A haemoglobin and nitric oxide help green algae to survive

The scientists studied the haemoglobin protein and its genetic blueprint in more detail using molecular biological
'/>"/>

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:4/22/2014)... 2014 Scientists from the Florida campus of The ... that plays a critical but previously unknown role in ... showed a novel role for a protein known as ... eLife , a publisher supported by the Howard ... Wellcome Trust. , "This is a critical building block ...
(Date:4/22/2014)... nanotechnology expert will present a poster titled ... 7th International Nanotoxicology Congress to be held ... Monita Sharma will outline a strategy consistent with the ... " Toxicity Testing in the 21st Century: A Vision ... methods involving human cells and cell lines for mechanistic ...
(Date:4/22/2014)... Experimental Biology (FASEB) has released updated factsheets ... the National Institutes of Health (NIH) benefits each of ... pleased to make these factsheets available to help citizens ... state," said FASEB President, Margaret K. Offermann, MD, PhD. ... research funding, investing $29.2 billion in FY 2013 in ...
Breaking Biology News(10 mins):Scientists identify critical new protein complex involved in learning and memory 2
... This press release is available in French ... and men contribute equally to the lineage of contemporary populations? ... polygamy or monogamy? To answer these questions, Dr. Damian Labuda, ... a professor at the Department of Pediatrics of the Universit ...
... professor of chemistry at New Jersey Institute of ... patent today for a novel composition of matter. ... (US Patent Number 7,670,684) discloses a new self-contained ... comprised of organic scaffolds with metal centers, which ...
... worldwide. It is the most common form of age-related dementia, ... no cure, and the available drugs only help to relieve ... characteristic changes in the brains of Alzheimer,s patients is the ... curing or at least slowing the disease lies in developing ...
Cached Biology News:Modern man found to be generally monogamous, moderately polygamous 2NJIT researcher awarded patent for hydrophobic, corrosion-resistant coating 2The sea squirt offers hope for Alzheimer's sufferers 2
(Date:1/14/2014)... In recent years, growing suspicion about the ... development and promotion has led to unprecedented levels of ... concerns about the insidious impact of commercialization of research, ... to the world’s biggest pharmas for illegal marketing activities, ...
(Date:1/14/2014)... OTTAWA, Ontario , Jan. 14, 2014   Kinaxis ®, ... ( SCM ) and sales and operations planning ( S&OP ... the Biomanufacturing Summit , which will be held at ...  At the conference, join Kinaxis customer Elisabeth Kaszas , ...
(Date:1/14/2014)... 2014 During the 1600’s through the 1800’s ... Doctor’s Plague.” In this time period, doctors did not know ... times, to the death of vulnerable patients. In the same ... they may be unwittingly transmitting herpes viruses to their patients. ...
(Date:1/14/2014)... Holloway America today announced an addition to ... (MTRs) for all pressure vessels and tank parts the ... important for equipment that must meet ASME, CE, PED, ... functionality that allows authorized users to quickly locate and ...
Breaking Biology Technology:The Sunshine Act: Necessary Regulation or Unnecessary Dysregulation? New Life Science Webinar Hosted by Xtalks and IRB Services 2The Sunshine Act: Necessary Regulation or Unnecessary Dysregulation? New Life Science Webinar Hosted by Xtalks and IRB Services 3Event Alert: Kinaxis Customer to Present at the Biomanufacturing Summit "Supply Chain: Improving Network Effectiveness" 2Study: Fatigued Medical Interns Infect Their Patients with Herpes Viruses; The CBCD Sees a Parallel with “The Doctor’s Plague” 2Study: Fatigued Medical Interns Infect Their Patients with Herpes Viruses; The CBCD Sees a Parallel with “The Doctor’s Plague” 3Pressure Vessel Design and Fabrication Company Builds Database for Material Test Reports 2Pressure Vessel Design and Fabrication Company Builds Database for Material Test Reports 3
... Symbol: MS , , , ... Medical Corp. (TSX: MS), today announced that the University of Alberta , a major shareholder ... , , Certain employees, officers ... Alberta . , , , ...
... Smartfield, ... was approved for $250,000 for completion and commercialization of their SmartCrop® technology. SmartCrop is ... , ... 30, 2010 -- Smartfield, Inc. is an information company that develops and ...
... ATLANTA , April 29 Xoft, Inc., developer of ... therapy directly to cancer sites with minimal radiation exposure to surrounding ... for the treatment of skin cancer. The announcement was made here ... April 29-May 1 . , ...
Cached Biology Technology:BioMS Medical updates University of Alberta equity position 2$250,000 Awarded to Smartfield, Inc. of Lubbock, TX by the Texas Emerging Technology Fund 2Xoft's Electronic Brachytherapy Hits Milestone With 10 New Skin Cancer Installations 2Xoft's Electronic Brachytherapy Hits Milestone With 10 New Skin Cancer Installations 3Xoft's Electronic Brachytherapy Hits Milestone With 10 New Skin Cancer Installations 4
Candida (IgG) -Ab EIA Sample Size: 5 l...
Candida (IgA) -Ab EIA Sample Size: 5 l...
Automated centrifuge for the processing of microplates and tubes; can be integrated into automated process using inexpensive robotics due to its unique sample handling platform....
... the first higher plant to be fully ... primary model organism for gene expression research ... microarray is derived from the ATH1 v.5 ... (TIGR) and from the Arabidopsis MPSS database ...
Biology Products: