Featured Research

from universities, journals, and other organizations

Scientists Establish Connection Between Life Today And Ancient Changes In Ocean Chemistry

Date:
November 9, 2006
Source:
University of California - San Diego
Summary:
Researchers in computational biology and marine science have combined their diverse expertise and found that trace-metal usage by present-day organisms probably derives from major changes in ocean chemistry occurring over geological time scales.

Researchers in computational biology and marine science have combined their diverse expertise and found that trace-metal usage by present-day organisms probably derives from major changes in ocean chemistry occurring over geological time scales.

Using protein structures for the first time in such a study, the research establishes one of the influences that geochemistry has had upon life.

The study, published in this week’s edition of the Proceedings of the National Academy of Sciences, sought to verify the theory that the rise in atmospheric oxygen some 2.3 billion years ago, and attendant shifts in ocean chemistry, led to changes in types of metals used with protein structures. Such changes are hypothesized to have led to the diversification and increased complexity of the life we see today.

Scientists Chris Dupont, Song Yang, Brian Palenik and Philip Bourne from the San Diego Supercomputer Center (SDSC), Scripps Institution of Oceanography, and the departments of chemistry and biochemistry and pharmacology at the University of California, San Diego (UCSD) analyzed the metal-binding characteristics of all known protein structures found in all kingdoms of life.

“Protein structures are ideal for this study,” Bourne said, “since they are much more conserved than protein sequences, traditionally used in such studies and, furthermore, metal binding can be inferred directly.”

Using data generated by Dupont and Yang, the group established that the three superkingdoms of life – Archaea, Bacteria and Eukarya -- all use metals differently. The differences reflect the availability of such metals in the ocean as the respective superkingdoms evolved.

The authors conclude that, “these conserved trends are proteomic imprints of changes in trace-metal bioavailability in the ancient ocean that highlight a major evolutionary shift in biological trace-metal usage.”

The changes in trace-metal availability are believed to have been brought about by the biologically caused rise in atmospheric oxygen some 2.3 billion years ago, highlighting the co-evolution of biology and geochemistry on a global scale.

“Here, abiological phenomenon, photosynthesis, changed the availability of trace metals in the oceans,” Dupont said, “resulting in a reciprocal change in biological evolution still observable today.”

The group notes that, “such studies linking the study of the earth sciences with that of the life sciences are limited and certainly no one has previously looked at this exciting area from the perspective of protein structure. We hope this will encourage others to undertake such interdisciplinary work.”


Story Source:

The above story is based on materials provided by University of California - San Diego. Note: Materials may be edited for content and length.


Cite This Page:

University of California - San Diego. "Scientists Establish Connection Between Life Today And Ancient Changes In Ocean Chemistry." ScienceDaily. ScienceDaily, 9 November 2006. <www.sciencedaily.com/releases/2006/11/061108155023.htm>.
University of California - San Diego. (2006, November 9). Scientists Establish Connection Between Life Today And Ancient Changes In Ocean Chemistry. ScienceDaily. Retrieved September 18, 2014 from www.sciencedaily.com/releases/2006/11/061108155023.htm
University of California - San Diego. "Scientists Establish Connection Between Life Today And Ancient Changes In Ocean Chemistry." ScienceDaily. www.sciencedaily.com/releases/2006/11/061108155023.htm (accessed September 18, 2014).

Share This



More Fossils & Ruins News

Thursday, September 18, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Egypt Denies Claims Oldest Pyramid Damaged in Restoration

Egypt Denies Claims Oldest Pyramid Damaged in Restoration

AFP (Sep. 17, 2014) Egypt's antiquities minister denied Tuesday claims that the Djoser pyramid, the country's first, had been damaged during restoration work by a company accused of being unqualified to do such work. Duration: 00:56 Video provided by AFP
Powered by NewsLook.com
King Richard III's Painful Cause Of Death Revealed

King Richard III's Painful Cause Of Death Revealed

Newsy (Sep. 17, 2014) King Richard III died in the Battle of Bosworth in 1485, and now researchers examining his skull think they know how. Video provided by Newsy
Powered by NewsLook.com
Researchers Explore Shipwrecks Off Calif. Coast

Researchers Explore Shipwrecks Off Calif. Coast

AP (Sep. 16, 2014) Federal researchers are exploring more than a dozen underwater sites where they believe ships sank in the treacherous waters west of San Francisco in the decades following the Gold Rush. (Sept. 16) Video provided by AP
Powered by NewsLook.com
Museum Traces Fragments of Star-Spangled Banner

Museum Traces Fragments of Star-Spangled Banner

AP (Sep. 12, 2014) As the Star-Spangled Banner celebrates its bicentennial, Smithsonian curators are still uncovering fragments of the original flag that inspired Francis Scott Key's poem. (Sept. 12) Video provided by AP
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:
from the past week

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins