Navigation Links
Fingerprint of dissolved glycine in the Terahertz range explained
Date:3/28/2014

Chemists at the Ruhr-Universitt Bochum (RUB) have, for the first time, completely analysed the fingerprint region of the Terahertz spectrum of a biologically relevant molecule in water, in this case, an amino acid. By combining spectroscopy and molecular-dynamics simulations, they rendered the motion of the most basic amino acid, glycine, visible in an aqueous solution. Their results have disproved the long-standing theory that frequencies in the Terahertz range provide no information regarding the amino acid's motion. The team led by Prof Dr Martina Havenith-Newen and Prof Dr Dominik Marx published their report in the "Journal of the American Chemical Society" (JACS).

Representing molecular motion by means of Terahertz spectroscopy

Researchers use Terahertz (THz) spectroscopy to send short radiation pulses into a sample of interest. The Terahertz range covers wavelengths of one to ten THz (0.3 millimetres to 30 micrometres) and extends between the infrared and the microwave range. The sample, in this case a mixture of water and glycine, partially absorbs the radiation, forming an absorption pattern, which is represented by chemists in the form of a spectrum. Certain areas of the spectrum, so-called bands, describe the motions of molecular bonds. Individual atoms in a molecule are not bonded rigidly; rather, they are permanently in motion. Complex computer simulations contribute significantly to analysing the spectra, as it is not always easy to decipher which individual bands of a spectrum correlate with which molecular motions.

THz analysis renders glycine motion in water visible

The RUB team has proved that THz analysis may be used to represent both the motion inside the glycine molecule and the motion of the glycine molecule together with its bound water molecules. The bands in the Terahertz spectrum, moreover, reflected the glycine's opening and closing motion. The spectrum also incorporated the motion of hydrogen bridges between the glycine and its bound water molecules. "The interaction between ab initio molecular-dynamics simulations and Terahertz spectroscopy provides us with an excellent instrument for tracking and understanding solvation processes on the molecular level," says Martina Havenith-Newen, Head of the Department of Physical Chemistry II.


'/>"/>

Contact: Dr. Martina Havenith-Newen
Martina.Havenith@rub.de
49-234-322-4249
Ruhr-University Bochum
Source:Eurekalert  

Related biology news :

1. Fingerprint Readers with DigitalPersona Silicon-based Sensors Certified for China Resident Identity Card
2. Biometrics Market Forecasts: Fingerprint Technologies, Facial and Iris Reading Algorithms Analyzed in New Research Reports
3. Fujitsu Launches Four Smartphones and Two Tablet PCs With FPC Embedded Fingerprint Technology for the Japanese Market
4. Grafted limb cells acquire molecular fingerprint of new location, UCI study shows
5. Glacial buzz-saws, gold in fools gold, fingerprints in sea water, and fluvial iron
6. Fingerprint Biometrics: Automated FIS, and Non-AFIS - Global Strategic Business Report - 2013
7. Silicon-based Fingerprint Sensors - Global Strategic Business Report
8. CSI-style DNA fingerprinting tracks down cause of cancer spread
9. Fingerprint Cards (FPC) Demonstrates Fingerprint Biometric Touch Sensor for Microsoft Windows 8.1
10. Papa Johns Restaurants in China Speed and Secure Workflow with DigitalPersona Fingerprint Biometrics
11. Metabolic fingerprinting: Using proteomics to identify proteins in gymnosperm pollination drops
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Fingerprint of dissolved glycine in the Terahertz range explained
(Date:12/16/2016)... global wearable medical device market, in terms of value, is projected ... in 2016, at a CAGR of 18.0% during the forecast period. ... Growth in ... launch of a growing number of smartphone-based healthcare apps compatible with ... increasing focus on physical fitness. Furthermore, growing trend ...
(Date:12/15/2016)... ... Markets has announced the addition of the "Global Military Biometrics Market ... the global military biometrics market to grow at a CAGR of 7.5% ... based on an in-depth market analysis with inputs from industry experts. The ... years. The report also includes a discussion of the key vendors operating ...
(Date:12/15/2016)... "Increase in mobile transactions is driving the growth of ... expected to grow from USD 4.03 billion in 2015 ... of 29.3% between 2016 and 2022. The market is ... smart devices, government initiatives, and increasing penetration of e-commerce ... to grow at a high rate during the forecast ...
Breaking Biology News(10 mins):
(Date:1/12/2017)... ... January 12, 2017 , ... After her brain cancer ... gave her only a few months to live. Now a paper publishing January ... Rosendahl’s disease and increased both the quantity and quality of her life: Adding ...
(Date:1/12/2017)... Pune, India , January 12, 2017 A new ... Type and End Users - Global Opportunity Analysis and Industry Forecast, 2014-2022," projects that ... $2,921 million in 2015, growing at a CAGR of 15.07% during the forecast period. ... ... Market Research Logo ...
(Date:1/11/2017)... AURORA, Colo. (PRWEB) , ... January 11, 2017 ... ... in the journal Clinical Cancer Research show early promise of the investigational anti-cancer ... progressed despite a median 5 previous treatment regimens. Twenty-seven percent of these heavily ...
(Date:1/11/2017)... , ... January 11, 2017 , ... ... society for optics and photonics , are commending the U.S. Congress and President ... signing Friday by the President of the American Innovation and Competitiveness Act (AICA). ...
Breaking Biology Technology: