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:10/13/2017)... IL (PRWEB) , ... October 13, 2017 , ... ... which established the certification process to promote standards of excellence for the field ... Symposium, scheduled for March 22 – 25, 2018 in Orlando, Florida at the ...
(Date:10/13/2017)... ... October 13, 2017 , ... Apple Rehab Shelton Lakes ... a mock evacuation of the facility as part of a disaster drill on October ... Hose EMS and Shelton City Emergency Manager, as well as the Connecticut Long ...
(Date:10/13/2017)... ... 2017 , ... Global Healthcare Management’s 4th Annual Kids Fun Run brought out ... free event, sponsored by Global Healthcare Management’s CEO, Jon Letko, is aimed at getting ... children of all ages; it is a non-competitive, non-timed event, which is all about ...
(Date:10/13/2017)... , ... October 13, 2017 , ... “The Journey: From ... every danger possible to save lost souls in the Philippines. “The Journey: From the ... is a dedicated teacher of the Bible. She has taught all ages and currently ...
(Date:10/12/2017)... ... ... Planet Fitness, one of the largest and fastest growing franchisors and operators ... location in Covington, LA at 401 N. U.S. Highway 190, in January of 2018. ... in the Holiday Square shopping center. Its location allows it to serve both Covington ...
Breaking Medicine News(10 mins):
(Date:10/4/2017)... South Korea , Oct. 4, 2017  South ... its next-generation CPR training aide "cprCUBE" on Kickstarter. The ... chest compression during cardiac arrests with better efficiency compared ... It also offers real-time feedback on efficacy of the ... The crowdfunding campaign has a goal to raise $5,000. ...
(Date:10/4/2017)... Oct. 4, 2017 OBP Medical ... illuminating medical devices, today announced regulatory approval from ... Agency (or Agência Nacional de Vigilância Sanitária (ANVISA)) ... cordless surgical retractor with integrated LED light source ... illumination and exposure of a tissue pocket or ...
(Date:10/2/2017)... Oct. 2, 2017  Eli Lilly and Company (NYSE: ... for the third quarter of 2017 on Tuesday, October ... on that day with the investment community and media ... The conference call will begin at 9 a.m. Eastern ... a live webcast of the conference call through a ...
Breaking Medicine Technology: