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 move from one place to another.

Ahmed and Krylov discovered that when there's no straight road between the two houses, the houses (molecules) can rearrange themselves so that their front doors are close together. In that way, the proton can travel from one to the other with no hydrogen bond and with little energy. Then the molecules return to their original positions.

"We've come up with the picture of a new process," Krylov said.


'/>"/>

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

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:1/26/2017)... , Jan. 26, 2017  Crossmatch, a leading provider ... new solution aimed at combatting fraud, waste and abuse ... introduced at the Action on Disaster Relief conference in ... point for UN agencies and foreign assistance organizations throughout ... waste and abuse are a largely unacknowledged problem in ...
(Date:1/24/2017)... 24, 2017 Biopharm Reports has carried ... use of nuclear magnetic resonance spectroscopy (NMR). This ... profiled current practices, developments, trends and end-user plans ... growth and opportunities. These areas include growth in ... needs and innovation requirements, hyphenated NMR techniques, main ...
(Date:1/21/2017)... , Jan 20, 2017 Research and ... Biometrics Market 2017-2021" report to their offering. ... The global voice recognition biometrics ... 2017-2021. The report covers the present scenario and ... 2017-2021. To calculate the market size, the report considers the revenue ...
Breaking Biology News(10 mins):
(Date:2/23/2017)... ROCHESTER, Minn. , Feb. 23, 2017 /PRNewswire/ ... a new product line of oncolytic vaccinia viruses ... Genelux Corporation as part of Genelux,s proprietary, vaccinia ... "We are excited to enter into a partnership ... time, selected oncolytic vaccinia viruses for use in ...
(Date:2/23/2017)... ... 23, 2017 , ... The Greater Gift Initiative, Inc , (GGI) a ... Research . GGI's mission is to advance global health and highlight the greater good ... honor of each clinical trial volunteer. The vision of GGI is to serve as ...
(Date:2/22/2017)... Therapeutics, Inc. (NASDAQ: PETX), a pet therapeutics company focused on ... companion animals, will host a live conference call on Tuesday, ... results from the fourth quarter and full year ended December ... access the audio webcast or use the conference ... ...
(Date:2/22/2017)... ... February 22, 2017 , ... ... provider of women’s health, primary care, and specialty education, announced today it ... Education (ACCME). ACCME’s Accreditation with Commendation is a six-year accreditation and is ...
Breaking Biology Technology: