text-only page produced automatically by LIFT Text Transcoder Skip all navigation and go to page contentSkip top navigation and go to directorate navigationSkip top navigation and go to page navigation
National Science Foundation
design element
News From the Field
For the News Media
Special Reports
Research Overviews
NSF-Wide Investments
Speeches & Lectures
NSF Director's Newsletter
Multimedia Gallery
News Archive
News by Research Area
Arctic & Antarctic
Astronomy & Space
Chemistry & Materials
Earth & Environment
People & Society

Email this pagePrint this page

Press Release 95-43
Unconventional Environments Harbor Bacteria with "Extremozymes"

June 28, 1995

This material is available primarily for archival purposes. Telephone numbers or other contact information may be out of date; please see current contact information at media contacts.

Organisms living in extreme environments -- hot springs, frozen antarctic waters, alpine summits, desert sands, and other unusual "habitats," such as airplane fuel tanks -- are the subject of an article in the July issue of the journal BIO/TECHNOLOGY. The article is an outgrowth of a workshop sponsored by the National Science Foundation on May 25 and 26, 1994 in Washington, D.C.

Researchers have become interested in bacteria inhabiting extreme environments because they produce specialized enzymes, dubbed extremozymes, which are useful as biocatalysts, biological substances that increase the rates of chemical reactions. Enzymes are the movers-and shakers inside an organism; powerful proteins, they bring molecules together to produce the chemical reactions essential to life. The study of organisms in unusual ecosystems has shown scientists that biocatalysis is indeed alive and well in unconventional environments.

Says Marcia Steinberg, program director in NSF's molecular biochemistry program, "Extremozymes function at extremes of pH, temperature, pressure, salt, and solvent conditions. Last year's workshop brought together representatives from academia, industry, and government to discuss new developments in research on and potential uses for these novel enzymes. The article in BIO/TECHNOLOGY details their findings."

Write authors Michael Adams of the University of Georgia, Francine Perler of New England Biolabs, and Robert Kelly of North Carolina State University, "The study of enzymes isolated from organisms inhabiting unconventional ecosystems has led to the realization that biocatalysis need not be constrained to mild conditions and can be considered in environments long thought to be destructive to biomolecules."

Given the information acquired from the study of extremozymes, modification of enzymes to improve their ranges of stability and activity remains a possibility, write the scientists. "Ultimately, by expanding the range of conditions suitable for enzyme function, new opportunities to use biocatalysis will be created." Those opportunities include everything from developments in industrial enzymes and solvent engineering, to refinements in pulp and paper manufacturing and hydraulic fracturing of gas and oil wells, to studies of our planet's biodiversity.


Media Contacts
Cheryl L. Dybas, NSF, (703) 292-8070, cdybas@nsf.gov

The National Science Foundation (NSF) is an independent federal agency that supports fundamental research and education across all fields of science and engineering. In fiscal year (FY) 2016, its budget is $7.5 billion. NSF funds reach all 50 states through grants to nearly 2,000 colleges, universities and other institutions. Each year, NSF receives more than 48,000 competitive proposals for funding and makes about 12,000 new funding awards. NSF also awards about $626 million in professional and service contracts yearly.

 Get News Updates by Email 

Useful NSF Web Sites:
NSF Home Page: http://www.nsf.gov
NSF News: http://www.nsf.gov/news/
For the News Media: http://www.nsf.gov/news/newsroom.jsp
Science and Engineering Statistics: http://www.nsf.gov/statistics/
Awards Searches: http://www.nsf.gov/awardsearch/



Email this pagePrint this page
Back to Top of page