Navigation Links
Water, water everywhere - but is it essential to life?
Date:4/13/2012

Proteins are large organic molecules that are vital to every living thing, allowing us to convert food into energy, supply oxygen to our blood and muscles, and drive our immune systems. Since proteins evolved in a water-rich environment, it is generally thought that they are dependent on water to survive and function.

Proteins consist of one or more polypeptides chains of amino acids held together by peptide bonds. If a protein in water is heated to temperatures approaching the boiling point of water, these chains will lose their structure and the protein will denature (unfold).

A classic example of denaturing occurs when an egg is hard-boiled: the structures of the proteins in the egg unfold with temperature and stick together creating a solid. In the egg's case, this process cannot be reversed however there are many examples where cooling the protein results in refolding of the structure.

Previously, it was thought that water was essential to the refolding process, however the Bristol findings suggest this isn't necessarily the case.

Using a spectroscopic technique called circular dichroism, Dr Adam Perriman of Bristol's School of Chemistry and colleagues have shown that the oxygen-carrying protein myoglobin can refold in an environment that is almost completely devoid of water molecules.

Dr Perriman said: "We achieved this by attaching polymer molecules to the surface of the protein and then removing the water to give a viscous liquid which, when cooled from a temperature as high as 155C, refolded back to its original structure.

"We then used the Circular Dichroism beamline (B23) at Diamond Light Source, the UK's national synchrotron science facility in Oxfordshire, to track the refolding of the myoglobin structure and were astounded when we became aware of the extremely high thermal resistance of the new material."

These findings could pave the way for the development of new industrial en
'/>"/>

Contact: Hannah Johnson
hannah.johnson@bristol.ac.uk
0044-117-928-8896
University of Bristol
Source:Eurekalert

Page: 1 2

Related biology news :

1. Water, fair and foul
2. Inventor honored for tech improving access to clean water, healthcare, and business development in India
3. Discovery may lead to safer drinking water, cheaper medicine: Queens University researchers
4. Polymer-based filter successfully cleans water, recovers oil in Gulf of Mexico test
5. Pitt researcher says simple polymer-based filter successfully cleans water, recovers oil in Gulf of Mexico tests
6. Water, water everywhere focus of new sustainability project
7. When worms stick together and swim on thin water, what happens and why does it matter?
8. The green machine: Algae clean wastewater, convert to biodiesel
9. Water, water, everywhere… but is it safe to drink?
10. From a bucket of seawater, new understanding of the ocean
11. Database of water, wastewater pipeline infrastructure systems to be launched Sept. 1
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:8/28/2014)... German . ... to a striking pattern of blue stripes alternating with golden ... cells, and yellow cells emerge during growth in the skin ... mosaic to compose the characteristic colour pattern. ,While ... interact to form proper stripes, the embryonic origin of the ...
(Date:8/28/2014)... Minn. A Mayo Clinic researcher and his collaborators ... up and enhance the process of re-engineering cells for ... uses network biology methods to aid stem cell engineering. ... engineering are described in two back-to-back papers in the ... a broad range of uses for all types of ...
(Date:8/28/2014)... groups and clinicians is critical to the development ... of Georgia research. , A qualitative study of ... that role models for successful breastfeeding help positively ... "Mothers who received that support are more likely ... Alex Anderson, an associate professor in the College ...
Breaking Biology News(10 mins):How the zebrafish gets its stripes 2How the zebrafish gets its stripes 3New tool aids stem cell engineering for medical research 2Breastfeeding study shows need for effective peer counseling programs 2
... life sciences journal F1000Research is that ... the article. Openly sharing data is an important step in ... published research, as well as enabling data reuse. ... the data in the journal,s articles to be assessed and ...
... balanced interplay of four molecules that trigger and govern ... an important basic science discovery, it helps explain why ... genes cannot fight infection effectively, and develop rare and ... of a number of different types of cells that ...
... poison-dart frog, a red male isn,t much brighter than a green ... the green and red variants of the same species of frog ... Ecology and Sociobiology , led by Beatriz Willink of the Universidad ... The bright colors of poison-dart frogs serve not only ...
Cached Biology News:F1000Research launch data plotting tool 2Molecular interplay explains many immunodeficiencies 2Green poison-dart frog varies mating call to suit situation 2
(Date:8/28/2014)... Nevada City, CA (PRWEB) August 28, 2014 ... and sanitation products for the food processing industry, is ... conducting a side-by side comparison of the E2 soap ... Q E2 Sanitizing Foam Soap . Hand hygiene ... pathogens in the food processing environment. Six key criteria ...
(Date:8/28/2014)... WEST LAFAYETTE, Ind. A new research ... "nanomechanical" properties of tiny structures undergoing stress ... insights to improve designs for microelectronics and ... spectroscopy, reveals information about how heating and ... their mechanical properties. Researchers have discussed the ...
(Date:8/28/2014)... The ability for organizations to attract ... allow individuals to perform at the highest of levels, ... looking to compete in this post–recession era. The ... as the sector increasingly focuses on the importance of ... have real results on the organization's development and the ...
(Date:8/28/2014)... (PRWEB) August 28, 2014 Sterlitech is ... polymeric membranes to its stable of products . ... molecular weight cut-offs and include membrane filters with surface ... increase in customer demand for our membrane process testing ... variety of flat sheet membranes,” explains Sterlitech President Mark ...
Breaking Biology Technology:Best Sanitizers, Inc. Asks Food Industry Professionals: With Fall Harvest On the Way, Is Your E2 Hand Soap Up to the Task? 2New analytical technology reveals 'nanomechanical' surface traits 2New analytical technology reveals 'nanomechanical' surface traits 3Klein Hersh International Leads Philadelphia Area Life Science Industry in Company Culture 2Klein Hersh International Leads Philadelphia Area Life Science Industry in Company Culture 3Sterlitech Corporation Enhances Its Selection of Flat Sheet Membrane Filters 2
... launched interactive, personalized services for Milwaukee drivers through ... announced Thursday. Traffic.com will provide area commuters with ... roadway traffic conditions including congestion levels, incidents, travel ... news release. , ,Data for the site will ...
... actors from two hemispheres came together outside Madison Friday ... Kazusa DNA Research Institute signed off on ... three-year agreement will involve exchanges between the Kazusa Institute, ... genome, and Promega with its technology for expressing and ...
... Systems, Inc. on Monday announced a 20.3 percent increase in ... quarter of production and shipment of its MRI monitor to ... year-end numbers, the company said fourth-quarter net sales for fiscal ... $6,667,617 for the same period of fiscal year 2004. , ...
Cached Biology Technology:Promega, Japanese lab announce partnership 2
MOUSE ANTI SIMIAN VIRUS 5 Immunogen: Simian virus 5...
... Serum • Beagle serum is collected from ... year of age Available Anticoagulants: ... N-06: K2EDTA N-08: Potassium ... Alsevers N-05: ACD N-07: ...
MOUSE ANTI BOVINE TROPONIN I...
Normal donkey serum collected from healthy normal donkeys....
Biology Products: