Navigation Links
Scientists discover new method of proton transfer
Date:3/21/2012

Scientists at USC and Lawrence Berkeley National Lab have discovered a new route by which a proton (a hydrogen atom that lost its electron) can move from one molecule to another a basic component of countless chemical and biological reactions.

"This is a radically new way by which proton transfer may occur," said Anna Krylov, professor of chemistry at the USC Dornsife College of Letters, Arts and Sciences. Krylov is a co-corresponding author of a paper on the new process that was published online by Nature Chemistry on March 18.

Krylov and her colleagues demonstrated that protons are not obligated to travel along hydrogen bonds, as previously believed. The finding suggests that protons may move efficiently in stacked systems of molecules, which are common in plant biomass, membranes, DNA and elsewhere.

Armed with the new knowledge, scientists may be able to better understand chemical reactions involving catalysts, how biomass (plant material) can be used as a renewable fuel source, how melanin (which causes skin pigmentation) protects our bodies from the sun's rays, and damage to DNA.

"By better understanding how these processes operate at molecular level, scientists will be able to design new catalysts, better fuels, and more efficient drugs," Krylov said.

Hydrogen atoms are often shared between two molecules, forming a so-called hydrogen bond. This bond determines structures and properties of everything from liquid water to the DNA double helix and proteins.

Hydrogen bonds also serve as pathways by which protons may travel from one molecule to another, like a road between two houses. But what happens if there's no road?

To find out, Krylov and fellow corresponding author Ahmed Musahid of the Lawrence Berkeley National Lab created a system in which two molecules were stacked on top of each other, without hydrogen bonds between them. Then they ionized one of the molecules to coax a proton to
'/>"/>

Contact: Robert Perkins
perkinsr@usc.edu
213-740-9226
University of Southern California
Source:Eurekalert

Page: 1 2

Related biology news :

1. Jefferson scientists deliver toxic genes to effectively kill pancreatic cancer cells
2. Scientists identify novel inhibitor of human microRNA
3. Argonne scientists peer into heart of compound that may detect chemical, biological weapons
4. MU scientists go green with gold, distribute environmentally friendly nanoparticles
5. Scientists identify gene that may contribute to improved rice yield
6. Scientists discover why a mothers high-fat diet contributes to obesity in her children
7. MU scientists see how HIV matures into an infection
8. Earth scientists keep an eye on Texas
9. Thinking it through: Scientists call for policy to guide biofuels industry toward sustainability
10. Scientists identify a molecule that coordinates the movement of cells
11. Scientists Find new migratory patterns for Mediterranean and Western Atlantic bluefin tuna
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:7/24/2014)... use of native animal species for food or commercial ... significant factor in the decline of many species of ... indicates that more than half of the species being ... hornbills., "By surveying not only the meat made available ... inside the forest by hunters and brought to villages ...
(Date:7/24/2014)... has identified two factors that characterize sustainable university ... of highly qualified physics teachers. Specifically, one or ... teacher education in combination with institutional motivation and ... Science, Technology, Engineering and Math (STEM) teacher shortages ... points the way for institutions seeking to increase ...
(Date:7/24/2014)... Some sticky research out of York University shows ... species of toxic grass fungus: moose saliva (yes moose ... Letters , "Ungulate saliva inhibits a grassendophyte mutualism" shows ... fescue grass (which hosts a fungus called epichlo festucae ... growth and less toxicity. , "Plants have evolved defense ...
Breaking Biology News(10 mins):Creating sustainable STEM teacher preparation programs 2Moose drool inhibits growth of toxic fungus: York U research 2
... known for years that damaged DNA can lead to human ... it--has remained less clear. , Now, computational chemists at ... that when a proton is knocked off one of the ... damage begins that causes "lesions" in the DNA. These lesions, ...
... the IODP Arctic Coring Expedition (ACEX) is making news with ... of Nature, an article by several of the expedition scientists ... warm, unusually wet, and ice-free up to the time the ... Earth's atmosphere ?a period calculated to have occurred 55 million ...
... the more advanced species stopped making a protein that ... the HIV-1 virus from entering and infecting blood cells. ... designed to prevent infections. But a research team led ... of Biomedical Sciences has demonstrated that over 100 days ...
Cached Biology News:'Pinball protons' created by ultraviolet rays and other causes can lead to DNA damage 2Arctic coring expedition continues to yield new clues 2Defense peptide found in primates may block some human HIV transmissions 2Defense peptide found in primates may block some human HIV transmissions 3
(Date:7/25/2014)... 25, 2014 Research and Markets ... Metabolomics Market 2014-2018" report to their offering. ... Metabolomics or Metabonomics is the scientific study ... a new experimental technique that is being widely ... Metabolites are small molecules that are present in ...
(Date:7/25/2014)... California (PRWEB) July 25, 2014 Lawrence ... named to Thomson Reuters list of " The World's ... are part of the 3,000 researchers who were identified ... to recognize those who published the highest-impact work (2002-2012 ... research papers on combustion modeling . , "This ...
(Date:7/25/2014)... BEIJING , July 25, 2014 Sinovac Biotech ... biopharmaceutical products in China , today announced ... second quarter ended June 30, 2014, after market close on ... conference call prior to the market opening on Friday, August ... at 8:00 p.m. China Standard Time) to review the Company,s ...
(Date:7/24/2014)... July 24, 2014  Now available is a stem ... Rehealth Regenerative Therapies , located in Guadalajara, ... active people a new health option: stem cell ... age, countless patients suffer from joint and muscle injuries ... muscle tears, torn rotator cuff, tennis elbow, and knee ...
Breaking Biology Technology:Global Metabolomics Market 2014-2018: Key Vendors are Agilent, Bio-Rad, Bruker, Human Metabolome and Metabolon 2Scientists Burst onto Influential List for Combustion Research 2Scientists Burst onto Influential List for Combustion Research 3Scientists Burst onto Influential List for Combustion Research 4Sinovac to Host Conference Call to Report Second Quarter 2014 Unaudited Financial Results 2Stem Cells In Sports Injuries, Joints And Muscular Pain 2Stem Cells In Sports Injuries, Joints And Muscular Pain 3
... at American Society of Pharmacognosy, EMERYVILLE, Calif., ... will present seminal information on a new drug ... 7th Annual Oxford International,Conference on the Science of ... April 12-16, 2008. Scott Baggett, Ph.D., a member ...
... April 14 Codexis, Inc. announced,today that it has ... U.S.,Securities and Exchange Commission ("SEC") relating to the proposed ... of the Codexis,registration statement on Form S-1 can be ... shares being offered and the price,range for the offering ...
... and reduced cost for ... pharmaceutical manufacturers, NEW YORK, ... agreement with Chiral Quest, Inc., a manufacturer and,developer of chiral ... chiral products to the pharmaceutical industry., Effective immediately, Sumitomo ...
Cached Biology Technology:Bionovo Identifies and Describes ER-beta Selective Compounds for the Treatment of Vaginal Dryness 2Bionovo Identifies and Describes ER-beta Selective Compounds for the Treatment of Vaginal Dryness 3Codexis, Inc. Files Registration Statement for Proposed Initial Public Offering 2Sumitomo Corporation of America Named Exclusive Distribution and Sales Agent for Chiral Quest 2