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:3/21/2016)... WAKEFIELD, Massachusetts , March 22, 2016 ... and facial recognition with passcodes for superior security ... MESG ), a leading provider of secure digital communications ... pilot their biometric technology and offer enterprise customers, particularly ... provide secure facial recognition and voice authentication within a ...
(Date:3/14/2016)... NXTD ) ("NXT-ID" or the "Company"), ... the airing of a new series of commercials on Time ... 21 st .  The commercials will air on Bloomberg TV, ... the Street show. --> NXTD ) ("NXT-ID" or ... market, announces the airing of a new series of commercials ...
(Date:3/10/2016)... , March 10, 2016   Unisys Corporation (NYSE: ... Border Protection (CBP) is testing its biometric identity solution ... Diego to help identify certain non-U.S. citizens leaving ... The test, designed to help determine the efficiency and accuracy ... in February and will run until May 2016. --> ...
Breaking Biology News(10 mins):
(Date:4/29/2016)... -- Elekta is pleased to announce that ... treatment planning software, is available for clinical release. Real-world ... version 5.11 provides significant performance speed enhancements over prior ... four times faster than in previous versions of ... Monte Carlo algorithm, users can ...
(Date:4/28/2016)... , ... April 28, 2016 , ... ... significant investments in recruiting top industry experts, and expanding its LATAM network and ... industry-leading tools for clients to manage their clinical trial projects. , The expansion ...
(Date:4/27/2016)... ... 27, 2016 , ... Most consumers engage with biometrics technology ... secure access, voice recognition for hands-free communication, and facial recognition to help organize ... technology today. But if they asked Joey Pritikin, Vice President of Marketing ...
(Date:4/27/2016)... Baltimore, MD (PRWEB) , ... April 27, 2016 ... ... appointed Greg Lamka, PhD to its Scientific Advisory Board. Dr. Lamka will assist ... of plant pathogen detection. , PathSensors deploys the CANARY® test platform for ...
Breaking Biology Technology: