Navigation Links
Fluid equilibrium in prehistoric organisms sheds light on a turning point in evolution
Date:9/22/2011

nits appear much later in evolution," said Dr. Rossier. "The appearance of the beta subunit is particularly significant because it is required for the function of the sodium pump. Without it, a functional sodium pump cannot be expressed at the cell surface. What is interesting is that it appeared right before the dividing point between unicellular organisms and multicellular organisms."

The team also found homologs of ENaC in a single-celled organism, the Naegleria gruberi. Although N. gruberi is a eukaryote and shares a common ancestor with Metazoans, it is located on a different branch of the eukaryotic family tree, among the Excavates. At first glance it might make sense to assume that both Metazoans and Excavates got their ENaC from their common eukaryotic ancestor, but ENaC is absent in all other branches of the eukaryotic tree.

Dr. Rossier said that although it is possible that the genes for ENaC originated in the common ancestor of eukaryotes and were lost in all branches except the Metazoa and the Excavates, there is another possibility. There could have been a lateral transfer of genes between N. gruberi and a Metazoan ancestor, one that lived between the last common ancestor of all eukaryotes and the first Metazoans.

Whether a Metazoan transferred the genes for ENaC to N. gruberi or the other way around, Dr. Rossier is not sure. Either way, the fact that ENaC gene family appeared just before the emergence of Metazoans suggests it is somehow linked to the development of multi-celled organisms, he said.


'/>"/>
Contact: Donna Krupa
dkrupa@the-aps.org
301-634-7209
American Physiological Society
Source:Eurekalert

Page: 1 2

Related biology news :

1. Kalyon wins Thomas Baron Award in Fluid-Particle Systems
2. Animal and biological science highlights: San Antonio Fluid Dynamics Conference, Nov. 23-25
3. Uncultured bacteria found in amniotic fluids of women who experience preterm births
4. GEN reports on growing reliance on microfluidics technology
5. Study: Fluid buildup in lungs is part of the damage done by the flu
6. Amniotic fluid may provide new source of stem cells for future therapies
7. NIST-Cornell team builds worlds first nanofluidic device with complex 3-D surfaces
8. Microfluidic palette may paint clearer picture of biological processes
9. NIST calculations may improve temperature measures for microfluidics
10. Novel NIST connector uses magnets for leak-free microfluidic devices
11. Microfluidic integrated circuit could help enable home diagnostic tests
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:8/28/2014)... Biologists at Ludwig-Maximilians-Universitaet (LMU) in Munich have assigned ... genus of predatory arthropods. These animals lived in ... than related forms found in Jurassic strata. ... their shallow marine habitat and were fossilized some ... other denizens of the Silurian seas although ...
(Date:8/27/2014)... FREMONT, Calif. , Aug. 27, 2014  WaferGen ... completed its previously announced underwritten public offering of units ... $10,000 per unit for gross proceeds of $20 million, ... expenses payable by the Company.  The shares and warrants ... Each unit sold in the offering consists ...
(Date:8/27/2014)... 27, 2014. Using functional near infrared spectroscopy (fNIRS), ... patterns between people with multiple sclerosis (MS) and ... in which brain activation was studied using fNIRS ... "Neuroimaging and cognition using functional near infrared spectroscopy ... June 11 by Brain Imaging and Behavior ...
Breaking Biology News(10 mins):Paleontology: Oldest representative of a weird arthropod group 2WaferGen Bio-Systems Announces Successful Completion of Public Offering Raising $20 Million 2WaferGen Bio-Systems Announces Successful Completion of Public Offering Raising $20 Million 3Kessler Foundation researchers publish first study of brain activation in MS using fNIRS 2
... nutrients to the sea could decrease viral infection rates ... pump, a means by which carbon is transferred from ... new mathematical modelling study. The findings, published in the ... ocean geo-engineering schemes proposed for tackling global warming. ...
... Predator scent enhanced the ability of pond snails ( ... overcrowding and reduced calcium had a blocking effect. ... simple animal model may help elucidate the mechanisms in ... Dalesman. The researchers are presenting their work at ...
... atmospheric nitrogen can be incorporated into organic macromolecules is ... The finding indicates what organic molecules might be found ... is a model for the chemistry of pre-life Earth. ... bodies that have thick, predominantly nitrogen atmospheres, said Hiroshi ...
Cached Biology News:Nutrients, viruses and the biological carbon pump 2Can you make a snail forget? 2Zapping Titan-like atmosphere with UV rays creates life precursors 2Zapping Titan-like atmosphere with UV rays creates life precursors 3
(Date:8/27/2014)... Salt Lake City, Utah (PRWEB) August 27, 2014 ... new construction that will expand its current Salt Lake ... operations currently underway outside of Utah to ultimately create ... the next 20 years. , “Utah is home ... many of whom can be credited with Varian’s success ...
(Date:8/27/2014)... Rhythm, a biopharmaceutical company developing peptide therapeutics ... in metabolic disorders, announced today that it has filed ... Securities and Exchange Commission (SEC) relating to the proposed ... The number of shares to be offered and the ... determined. Citigroup and Cowen and Company will ...
(Date:8/27/2014)... NEW YORK , Aug. 27, 2014 ... market research report is available in its ... Market 2014-2018 http://www.reportlinker.com/p02316661/Global-Biodegradable-Packaging-Materials-Market-2014-2018.html ... Biodegradable materials are materials that are readily ... packaging differs from conventional non-degradable packaging in ...
(Date:8/27/2014)... how plants survive impact by the huge amounts ... using this energy for photosynthesis. The hypothesis is ... quickly dissipate the energy throughout the entire protein ... Physics have now managed to successfully ,film, this ... light-absorbing proteins which play a role in photosynthesis ...
Breaking Biology Technology:Varian Medical Systems Groundbreaking on Facility Expansion Triggers Influx of New Jobs to Salt Lake 2Varian Medical Systems Groundbreaking on Facility Expansion Triggers Influx of New Jobs to Salt Lake 3Rhythm Files Registration Statement for Proposed Initial Public Offering 2Global Biodegradable Packaging Materials Market 2014-2018 2Global Biodegradable Packaging Materials Market 2014-2018 3Global Biodegradable Packaging Materials Market 2014-2018 4Global Biodegradable Packaging Materials Market 2014-2018 5Global Biodegradable Packaging Materials Market 2014-2018 6Global Biodegradable Packaging Materials Market 2014-2018 7DTU researchers film protein quake for the first time 2
... less than one-millionth of an inch long and one-thousand ... toggles on and off through the movement of a ... requirements of this single electron transistor (SET), created by ... of Ludwig-Maximilians University in Munich, could eventually lead to ...
... Milwaukee The Milwaukee Brewers will ... diagnose injured players at Miller Park, officials announced Thursday. ... division, will provide a Directview CR 850 ... This equipment will be used to generate high-resolution digital ...
... I used to be a corporate HR person, people ask me HR ... that I get asked is: Can my company actually do that? , ... anyway. , ,Im not a lawyer. I dont send people off to ... far). Life is long. So many of these errors are clueless rather ...
Cached Biology Technology:Transistors made from single electrons 2Transistors made from single electrons 3Illegal business tricks: Can my company do that? 2Illegal business tricks: Can my company do that? 3