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:2/7/2017)... 7, 2017   MedNet Solutions , an innovative ... of clinical research, is pleased to announce that the ... innovative, highly flexible and award winning eClinical solution, is ... iMedNet is a proven Software-as-a-Service (SaaS) clinical research ... (EDC), but also delivers an entire suite of eClinical ...
(Date:2/7/2017)... 7, 2017 Ipsidy Inc. ( ... [OTC: IDGS], ("Ipsidy" or the "Company") a provider of ... services, is pleased to announce the following changes as ... Effective January 31, 2017, Philip D. Beck ... and President.  An experienced payment industry professional and public ...
(Date:2/3/2017)... -- Texas Biomedical Research Institute announced that its Board of Trustees ... the Institute,s new President and CEO. Dr. Schlesinger will take ... is currently the Chair of the Department of Microbial Infection ... Biology at Ohio State University. "We are delighted ... of Texas Biomed," said Dr. James O. Rubin , ...
Breaking Biology News(10 mins):
(Date:2/22/2017)... ... 22, 2017 , ... LabRoots , the leading provider of educational and ... pleased to announce the launch of a new scholarship for young scientists seeking a ... merit-based scholarship is open to all high school seniors, 17 years or older; as ...
(Date:2/22/2017)... ... February 22, 2017 , ... Pharma ... Tom Perkins as European director. Operating from Pennside’s Zurich headquarters, Pennside Partners, GmbH, ... Perkins joins Pennside after more than a decade with leading market research firm, ...
(Date:2/21/2017)... ... February 21, 2017 , ... During HIMSS ... digital health applications, announced a partnership with Redox, a leader in cloud-based healthcare ... many clinical systems while keeping data secure in the cloud. , The digital ...
(Date:2/21/2017)... ... February 21, 2017 , ... ... -Sciences division, Treximo will pair its $200M operational capacity with its strategic ... project management in areas affecting quality and operational management. With office ...
Breaking Biology Technology: