Navigation Links
Inactivity of proteins behind longer shelf life when freezing
Date:3/3/2009

Frozen biological material, for example food, can be kept for a long time without perishing. A study by researchers at the University of Gothenburg, Sweden, is close to providing answers as to why.

A cell's proteins are programmed to carry out various biological functions. The protein's level of activity and its ability to successfully carry out these functions is dependent on the amount of water by which it is surrounded. For example, dry proteins are completely inactive. A critical amount of water is required in order for the function to get going, after which point the protein's level of activity increases concurrently with an increase in the amount of water. Proteins achieve full biological activity when the surrounding water has approximately the same weight as the protein.

Researchers at the University of Gothenburg and Chalmers University of Technology have together with a group of American researchers used advanced experimental techniques to study how movements in the water that surrounds the protein cause movements in the protein itself. The study, which is being published in the journal PNAS, indicates that the dynamics in the surrounding water have a direct effect on the protein's dynamics, which, in turn, should affect the activity.

The results explain, for example, why biological material such as foodstuffs or research material can be stored at low temperatures for a long period of time without perishing.

"When the global movements in the surrounding water freeze, then significant movements within the protein also come to a stop. This results in the protein being preserved in a state of minimum energy and biological activity comes to a stop," says researcher Heln Jansson at the Swedish NMR Centre, University of Gothenburg, Sweden.


'/>"/>

Contact: Krister Svahn
krister.svahn@science.gu.se
46-317-864-912
University of Gothenburg
Source:Eurekalert

Page: 1

Related biology news :

1. Caltech and UCSD researchers shed light on how proteins find their shapes
2. Inhibiting proteins may prevent cartilage breakdown in arthritis patients
3. Tailor-made recombinant proteins in mammals
4. Fishy clue helps establish how proteins evolve
5. Fluorescent proteins illuminating biomedical research
6. JDRF-funded researchers discover proteins regulating human beta cell replication
7. Motor nerve targeting to limb muscles is controlled by ephrin proteins
8. New technique is quantum leap forward in understanding proteins
9. Just a little squeeze lets proteins assess DNA
10. Proteins strangle cell during division
11. Luminescence shines new light on proteins
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:5/16/2017)... May 16, 2017   Bridge Patient Portal ... and MD EMR Systems , an electronic ... for GE, have established a partnership to build ... and the GE Centricity™ products, including Centricity Practice ... These new integrations will allow healthcare ...
(Date:4/18/2017)... Inc., a global expert in SoC-based imaging and computing solutions, has ... features the company,s hybrid codec technology. A demonstration utilizing TeraFaces ® ... be showcased during the upcoming Medtec Japan at Tokyo Big Sight ... Las Vegas Convention Center April 24-27. ... Click here for an image of the ...
(Date:4/11/2017)... April 11, 2017 Crossmatch®, a globally-recognized ... solutions, today announced that it has been awarded ... Projects Activity (IARPA) to develop next-generation Presentation Attack ... "Innovation has been a driving force within ... will allow us to innovate and develop new ...
Breaking Biology News(10 mins):
(Date:9/21/2017)... ... (PRWEB) September 21, 2017 , ... ... scientific and technical congress to review the latest knowledge on these products, which ... international speakers will discuss the impact of Biostimulants on Plant Nutrition, Abiotic Stresses, ...
(Date:9/21/2017)... ... September 21, 2017 , ... Today, BioPharma Institute, a leading ... addition of 5 new courses to its prospectus. These include the eagerly-awaited ... Part 11 on Electronic Records and Electronic Signatures (Part 11 of Title 21 ...
(Date:9/21/2017)... ... September 21, 2017 , ... ... the election of Paul Hermes, Entrepreneur in Residence at Medtronic, Inc., to serve ... developed a proprietary, tissue-engineered scaffold for anterior cruciate ligament (ACL) reconstruction that is ...
(Date:9/20/2017)... ... September 20, 2017 , ... Diversity focused business accelerator, The Refinery ... pitch competition to uncover the top technology-driven, women-led startups in Boston, MA, New Haven/Hamden, ... each city’s entrepreneurial events going on that week – in Boston, it will be ...
Breaking Biology Technology: