Navigation Links
Bacteria Can Survive In Extreme Heat

Scientists from the Weizmann Institute's Plant Sciences Department conducted a study to examine how bacteria and other microorganisms manage to survive in diverse climates like Antarctica and hot springs.// The team led by Prof. Avigdor Scherz found that only two amino acids made a difference in the ability of the bacteria to survive at moderate temperatures or high degree of heat. The study appears in the journal Nature. The team compared two different kinds of bacteria – one found in moderate environments and the other, an intense-heat lover. Both were photosynthetic (that is, using the sun's energy to create sugars for food). The focus of the research was a reaction that takes place in enzymes in the photosynthetic "reaction center" of the bacterial cell. While gradually raising the surrounding temperature, the scientists timed this reaction to see how reaction rates changed as things heated up. A general rule for enzyme reactions states that as the heat rises, so does the reaction rate. Contrary to this rule, and the scientist's expectations, both reaction rates peaked at a certain point, and remained steady thereafter. For each enzyme, the peak occurred in the bacteria's "comfort zone." Further comparisons of the enzymes, which were nearly identical, turned up differences in just two of the hundreds of amino acids making up the enzyme sequence. When the scientists replaced these two amino acids in the enzyme adapted to the moderate temperatures with those of the heat-loving enzyme, they observed an increase of about 10 degrees in the average temperature at which the reaction rate peaked. Scherz: "This study shows that enzyme efficiency is tuned to the average temperature of the bacterial habitat, rather than the immediate conditions. This may protect the cells from harmful swings in enzyme activity. We can envision using this knowledge, for instance, to facilitate enzymatic reactions in different applications, enhance crop production in areas subject to extreme temperature changes or create new resources for biofuel production that will not only provide more biomass per acre, but absorb more of the greenhouse gas, carbon dioxide, as well."

Source-Eurekalert
RAS
'"/>




Related medicine news :

1. Bacterial discovery may help CF patients
2. Cure for Bacterial Meningitis
3. Before Weight Loss Surgery One Should Get Tested for Bacteria
4. Molecule That Aids Bacterial Infections Identified
5. Moms Stomach Bacteria Can Cause Leukaemia In Children
6. Bacteria Evolve Armamentarium Against Antibiotics By ‘Stealing’ Gens
7. Bacterial Photographs Created By Student Scientists!
8. Bacterial infestation in food very critical!
9. Tooth Decay Bacteria Unaffected By Altered Biochemical Pathway
10. Beneficial Symbiotic Relationship Between Ants And Bacteria.
11. Tamiflu substrate produced from Bioengineered Bacteria
Post Your Comments:
*Name:
*Comment:
*Email:


(Date:5/2/2016)... ... May 02, 2016 , ... Over $60 Billion is spent annually on products ... toys, leading product review site for Toys, Tots, Pets & More (TTPM) announced the ... Spring Showcase at the Metropolitan Pavilion in New York City. , Chosen from a ...
(Date:5/2/2016)... Las Vegas, NV (PRWEB) , ... May 02, ... ... with Specialty Pharmacy Times, has announced a new Specialty Pharmacy Patient Satisfaction Award ... be determined based on the quarterly results from Zitter Health Insights’ Specialty Pharmacy ...
(Date:5/2/2016)... ... May 02, 2016 , ... According to an American Psychological Association ... are sexually abused before the age of 18. Of those who survive, many still ... and others. , In her new book, Lyah! Lyah! Pants on Fyah!, she ...
(Date:5/2/2016)... ... May 02, 2016 , ... ... Analytics EVP and GM Jim Callandrillo and Duane Reed, VP of business ... Annual Pharmaceutical Business Intelligence and Research Group (PBIRG) General Meeting from May ...
(Date:5/2/2016)... ... May 02, 2016 , ... The Evolve Paddle Board Company- which specializes in ... the outcome of their partnership with Yoloha Yoga- producers of high quality cork yoga ... SUP yoga has seen a dramatic rise in popularity throughout the last few years. ...
Breaking Medicine News(10 mins):
(Date:4/28/2016)...  The blood testing market in China ... Information and The Freedonia Group in a recent report.  ... The healthcare research firm said that China ... stations and in improving testing at the provincial level.  ... Blood Testing Market in China , which ...
(Date:4/28/2016)... Dr. Vivek Ahuja , ... Ste phen Schmidt Join the ... software solutions for life sciences, today announced key new leaders have ... insight to a growing business.  This will bolster the company,s safety ... joined ArisGlobal in the position of Vice President - Safety. ...
(Date:4/28/2016)... FREMONT, Calif. , April 28, 2016 ... Enterprise Validation Lifecycle Management Solutions (VLMS) today ... products and services for sufferers of chronic ... management System to manage their corporate validation ... been seeking a software solution to manage ...
Breaking Medicine Technology: