Navigation Links
Argonne scientists discover possible mechanism for creating 'handedness' in biological molecules
Date:12/1/2008

ARGONNE, Ill. (December 1, 2008) The basic molecules that make up all living things have a predetermined chirality or "handedness," similar to the way people are right- or left-handed. This chirality has a profound influence on the chemistry and molecular interactions of living organisms. The inception of chirality from the elementary building blocks of matter is one of the great mysteries of the origin of life. Scientists at the U.S. Department of Energy's Argonne National Laboratory have discovered a way to induce this handedness in pre-biological molecules.

"Understanding how the molecules necessary for life originated is one of the most basic scientific questions in biochemistry," Argonne chemist Richard Rosenberg said. "Chirality plays a fundamental role in biological processes and researchers have been trying to discover the mechanisms that led to this property for years."

Rosenberg used X-rays from the Advanced Photon Source to bombard chiral molecules adsorbed on a magnetic substrate and x-ray photoelectron spectroscopy to track changes in the molecular bonds.

He found that changing the magnetization direction in relation to the high-intensity X-ray beam created an excess of one chirality over another. Changing the magnetization direction reverses the spin polarization of the secondary, or low-energy, electrons emitted from the substance.

Iron is a common element and is magnetic in many form and ionizing radiation and magnetic fields are prevalent throughout the universe.

Based on the Argonne results, it is conceivable that chirality could have been introduced by irradiation of molecules as they traveled through the universe while adsorbed on a magnetized substrate in a dust cloud, meteor, comet or on a primitive planet.

"Our study shows that spin-polarized secondary electrons interacting with chiral molecules could produce a significant excess of a given chirality in pre-biological molecules," Rosenberg sa
'/>"/>

Contact: Brock Cooper
bcooper@anl.gov
630-252-5565
DOE/Argonne National Laboratory
Source:Eurekalert

Page: 1 2

Related biology news :

1. Argonne helps China create cleaner Beijing for 2008 Olympics
2. Argonne National Lab acquires first SiCortex SC5832
3. New Argonne study may shed light on protein-drug interactions
4. Research at Argonnes Advanced Photon Source reveals structure and behavior of collagen
5. Bioinformatics technology developed at Argonne provides new insight into microbial activities
6. Argonne scientists develop techniques for creating molecular movies
7. Argonne scientists use lasers to align molecules
8. Argonne-SRNL agreement supports critical DOE, national priorities
9. Argonne-University of Chicago joint venture bolsters genomic sequencing capabilities
10. Integrated Fuel Technologies gets worldwide license for Argonne-developed Diesel DeNOx Catalyst
11. NIH awards Argonne $800,000 to develop tool to measure distances within proteins
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:3/24/2015)... 24, 2015   Crossmatch ™, a leading ... that its U.are.U ® 4500 Fingerprint Readers ... Bros . to achieve PCI compliance for Point-of-Sale ... to the POS terminal, protecting the retailer and ... breaches. With one-third of worldwide ...
(Date:3/23/2015)... ANGELES , March 23, 2015  In the ... Federal fraud case conviction losses. This figure accounts for ... which, according to The Nilson Report, exceeds $11 billion ... investigative tool after a crime has occurred. Investor ... and polygraph expert Joe Paolella partnered to ...
(Date:3/20/2015)... --Research and Markets ( http://www.researchandmarkets.com/research/rswjb4/hand_geometry ) has announced ... Business Report" report to their offering. This ... Thousands. The report provides separate comprehensive analytics for the US, ... Europe , Asia-Pacific , ... Annual estimates and forecasts are provided for the ...
Breaking Biology News(10 mins):Crossmatch Fingerprint Readers Help Retailer Prevent Data Breaches at Point-of-Sale 2Polygraph Test Now Used to Protect Investors From Fraud 2Polygraph Test Now Used to Protect Investors From Fraud 3Hand Geometry - Global Strategic Business Report 2015: An Essential Security Component for both Government & Enterprise Sector 2Hand Geometry - Global Strategic Business Report 2015: An Essential Security Component for both Government & Enterprise Sector 3Hand Geometry - Global Strategic Business Report 2015: An Essential Security Component for both Government & Enterprise Sector 4
... CO, USA - Topics include: continental deformation and ... correlation of 200-million-year-old rocks between Britain and America; ... extinctions; rock weathering in Canada,s Mackenzie River basin ... stable continents split in the absence of active ...
... signed by the worlds largest international non-profit cancer ... (LICR), to establish a branch for translational and ... collaboration with three Singapore institutions, namely, the Agency ... Loo Lin School of Medicine of the National ...
... OH -- Reseachers at The Ohio State University ... is an effective method for preserving the important genetic ... as geranium, are some of the most popular flowers ... Horticultural Society listed more than 3,000 varieties of geranium ...
Cached Biology News:November GEOLOGY and GSA TODAY Media Highlights 2November GEOLOGY and GSA TODAY Media Highlights 3November GEOLOGY and GSA TODAY Media Highlights 4November GEOLOGY and GSA TODAY Media Highlights 5November GEOLOGY and GSA TODAY Media Highlights 6November GEOLOGY and GSA TODAY Media Highlights 7November GEOLOGY and GSA TODAY Media Highlights 8November GEOLOGY and GSA TODAY Media Highlights 9November GEOLOGY and GSA TODAY Media Highlights 10Ludwig Institute for Cancer Research to set up its first Asian branch in Singapore 2Ludwig Institute for Cancer Research to set up its first Asian branch in Singapore 3'TRAP' preserves genetic properties of popular geranium 2
(Date:4/30/2015)... DIEGO , April 30, 2015  Pfenex ... engaged in the development of biosimilar therapeutics including ... announced the closing of its previously announced underwritten ... stock at a public offering price of $15.50 ... by the underwriters of their option to purchase ...
(Date:4/30/2015)... (PRWEB) April 30, 2015 Available ... at http://www.lespausa.com , Phytomer’s DOUCEUR INTEMPORELLE ... and reactive skin while battling the weakening threat ... restorative cream is formulated with star ingredient GLYCOSEA, ... biotechnology in a complex of soothing minerals and ...
(Date:4/29/2015)... Washington, and BALTIMORE, Maryland, USA (PRWEB) April 29, 2015 ... event for photonics, optical sensing, and imaging on the ... place for government program managers, researchers, applications developers, and ... technology of sensing and imaging for multiple applications. , ... defense and security, and commercial and scientific sensing and ...
(Date:4/29/2015)... (PRWEB) April 29, 2015 The leading ... announce that its regenerative stem cell therapy has processed ... 2002, seeking to discover a successful treatment for horses ... In 2003 VetStem signed a worldwide exclusive license for ... and the first horse was treated in January 2004. ...
Breaking Biology Technology:Pfenex Inc. Announces Closing of Public Offering of Common Stock and Full Exercise of Underwriters' Option to Purchase Additional Shares 2Phytomer introduces DOUCEUR INTEMPORELLE Restorative Shield Cream 2Phytomer introduces DOUCEUR INTEMPORELLE Restorative Shield Cream 3SPIE DSS provides venue for collaboration vital to research, applications advances 2SPIE DSS provides venue for collaboration vital to research, applications advances 3SPIE DSS provides venue for collaboration vital to research, applications advances 4VetStem Biopharma -Regenerative Cell Therapy has processed over 11,000 samples 2
... Is the advertised high-speed Internet access you're paying for ... issue of whether DSL and high-speed cable providers should ... nationwide, writes adjunct Northwestern professor James Carlini. , ,Since ... rolled in on a DSL Reports discussion thread. "Are ...
... face many serious issues over the next year, ranging ... engineering better biofuels and bioproducts. But few of those ... convention visitors at BIO '06. , ,Whose advertising ... in Chicago's massive McCormick Place demonstrates just how competitive ...
... always been a center for innovation and discovery. From ... advances were made right here in our state. Today, ... has taken the lead. , ,From developing innovative ... nation relieve its dependence on foreign oil to working ...
Cached Biology Technology:Notion of bandwidth spedometers for DSL, cable sparks controversy 2Notion of bandwidth spedometers for DSL, cable sparks controversy 3Notion of bandwidth spedometers for DSL, cable sparks controversy 4Notion of bandwidth spedometers for DSL, cable sparks controversy 5My-oh, it's BIO! Where sales hype and science collide 2Making Wisconsin the biotechnology leader 2Making Wisconsin the biotechnology leader 3
... 2 Alzheimer's disease (AD) patients with ... mutations in the presenilin proteins (PSEN1; PSEN2) ... disease-linked mutations result in increased production of ... of amyloid deposits found in AD brains). ...
See product name for description....
2'-Fluorine-CTP (2'-F-CTP) is readily incorporated into transcripts by T7 and SP6 R&DNA™ Polymerase and is available separately....
Rat CINC-2 alpha/beta Affinity Purified Polyclonal Ab...
Biology Products: