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:11/17/2016)... Global Market Watch: Primarily supported by ownership types; ... Academics) market is to witness a value of US$37.1 billion ... Compounded Annual Growth Rate (CAGR) of 10.75% is foreseen from ... 2014-2020. North America is not way ... Europe at 9.56% respectively. Report Focus: ...
(Date:11/15/2016)... ROCKVILLE, Md. , Nov. 15, 2016 /PRNewswire/ ... clinical company developing therapeutics focused on the gut ... public offering of 25,000,000 shares of its common ... its common stock at a price to the ... gross proceeds to Synthetic Biologics from the offering, ...
(Date:11/14/2016)... 14, 2016  Based on its recent ... & Sullivan recognizes FST Biometrics with the ... Visionary Innovation Leadership. FST Biometrics emerged as ... market by pioneering In Motion Identification (IMID) ... seamless, and non-invasive verification. This patented solution ...
Breaking Biology News(10 mins):
(Date:12/2/2016)... ... 2016 , ... Orthogonal, a Chicago-based medical device software company, ... 510(k) clearance for their flagship medical device, SimplECG. , With this FDA approval, ... rely on cloth-based nanosensors. While other companies have attempted to focus on wearable ...
(Date:12/2/2016)... a world leader in rapid infectious disease tests, introduced the Company,s newest product, the ... (Photo: http://photos.prnewswire.com/prnh/20161201/444905 ) Continue Reading ... ... , , bioLytical was invited by the ... INSTI HIV Self Test to 350 pharmacy representatives in Nairobi ...
(Date:11/30/2016)... Fla. , Nov. 30, 2016 Biotest ... products, is pleased to announce the addition of its ... Kearney, Nebraska . The 15,200 square ... on November 29th, 2016 and brings the total number ... Ileana Carlisle , BPC,s Chief Executive Officer ...
(Date:11/30/2016)... , 30. November 2016   ... hat heute die Unterzeichnung einer Reihe von ... zufolge wird Evotec AG Screeningleistungen für Mercks ... bereitstellen. Der Zugriff auf diese Bibliotheken in ... eröffnet einen schnelleren Weg zur Ermittlung und ...
Breaking Biology Technology: