Navigation Links
A new genre of 'intelligent' micro- and nanomotors
Date:1/30/2013

Enzymes, workhorse molecules of life that underpin almost every biological process, may have a new role as "intelligent" micro- and nanomotors with applications in medicine, engineering and other fields. That's the topic of a report in the Journal of the American Chemical Society, showing that single molecules of common enzymes can generate enough force to cause movement in specific directions.

Peter J. Butler, Ayusman Sen and colleagues point out that enzymes proteins that jump-start chemical reactions are the basis of natural biological motors essential to life. Scientists long have wondered whether a single enzyme molecule, the smallest machine that could possibly exist, might be able to generate enough force to cause its own movement in a specific direction. "Positive answers to these questions," they explain, "have important implications in areas ranging from biological transport to the design of 'intelligent,' enzyme-powered, autonomous nano- and micromotors, which are expected to find applications in bottom-up assembly of structures, pattern formation, cargo (drug) delivery at specific locations, roving sensors and related functions."

They provide the positive answers in experiments with two common enzymes called catalase and urease. Catalase protects the body from harmful effects of hydrogen peroxide formed naturally in the course of life. Urease, found in many plants, converts urea to ammonia and carbon dioxide. The researchers show that these two enzymes, in the presence of their respective substrate (hydrogen peroxide or urea, which acts as fuel), show movement. More significantly, the movement becomes directional through the imposition of a substrate gradient, a form of chemotaxis. Chemotaxis is what attracts living things toward sources of food. The researchers also show that movement causes chemically interconnected enzymes to be drawn together; a form of predator-prey behavior at the nanoscale.


'/>"/>

Contact: Michael Bernstein
m_bernstein@acs.org
202-872-6042
American Chemical Society
Source:Eurekalert

Page: 1

Related medicine news :

1. A new genre of diagnostic tests for the era of personalized medicine
2. Canada and Europe fund intelligent senior homes
3. Targeted micro-bubbles detect artery inflammation, MU study finds
4. Katon Direct, a Healthcare Micro-Marketing Solutions Company, Launches Their New Website, Innovating the way Healthcare Companies Find the Most Qualified Candidates
5. Micro-Stents May Hold Potential to Treat Glaucoma
6. In obesity, a micro-RNA causes metabolic problems
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:4/18/2014)... in French . ... and regenerative medicine. A team led by Ludwik Leibler ... Tech) and Didier Letourneur from the Laboratoire Recherche Vasculaire ... demonstrated that the principle of adhesion by aqueous solutions ... soft-tissue organs and tissues. This easy-to-use gluing method has ...
(Date:4/17/2014)... genetic variant specifically associated with the risk of ... per cent of all breast cancer cases. , ... sub-type, called invasive lobular carcinoma, gives researchers important ... kind of breast cancer, which can be missed ... in the journal PloS Genetics , was ...
(Date:4/17/2014)... the April issue of Experimental Biology and ... Drs. Rex Gaskins and Paul Kenis in the ... of the University of Illinois Urbana-Champaign describe their ... reactions underlie a variety of cell functions including ... these crucial roles in regulating normal cellular behavior, ...
(Date:4/17/2014)... Bonheur Children,s Hospital Pediatrician-in-Chief Jon McCullers, MD, was ... April issue of Nature Reviews Microbiology , ... Dr. McCullers, a world-renowned infectious disease specialist, and ... University of Tennessee Health Science Center, analyzed the ... 1957 and 1968 pandemics, as well as more ...
(Date:4/17/2014)... that as many as 10 million older Americans suffer ... and isolation. , However, new research a project ... Americans for six years found that Internet use ... by more than 30 percent. , "That,s a very ... professor of telecommunication, information studies and media who led ...
Breaking Medicine News(10 mins):Health News:Innovative strategy to facilitate organ repair 2Health News:Innovative strategy to facilitate organ repair 3Health News:First genetic link discovered to difficult-to-diagnose breast cancer sub-type 2Health News:First genetic link discovered to difficult-to-diagnose breast cancer sub-type 3Health News:Live cell imaging reveals distinct alterations of subcellular glutathione potentials 2Health News:Internet use can help ward off depression among elderly 2
... Aug. 19 Lupin Ltd.,announced today that the Company ... the AeroChamber Plus(R) line of products with,Forest Laboratories, Inc. ... will use its 50 person sales force to promote,the ... Holding Chamber (VHC) device that is,used with metered dose ...
... Private Access Appoints Marc Kirshbaum as President & COO, Former ... Medical Research through its suite of web-based privacy management ... clinical ... Private Access,Inc., a developer of web-based solutions that enable management ...
... LINTHICUM, MD, August 18, 2008Young researchers presented innovative, ... Conference, a collaborative project of the AUA Foundation ... on August 7-9, 2008. The AUA Foundation hosted ... discuss the most cutting-edge research in sexual medicine. ...
... Team Conference on October 23,2008, ALEXANDRIA, Va., ... improving America,s future. A strong advocate for,children and ... advocate and,tireless worker on behalf of important social ... Edwards will be the opening speaker at,the National ...
... Cialis showed benefit without side effects , , TUESDAY, ... the erectile dysfunction drug tadalafil (Cialis) helped relieve lower ... prostates, according to a new study. , More than ... lower urinary tract symptoms, including increased urination frequency and ...
... more wide-spread ... authentication for network access, DALLAS, Aug. 19 To ... two-factor authentication via hardware tokens in order to,protect patient files, ... to deploy to a wider audience and,cumbersome for the medical ...
Cached Medicine News:Health News:Lupin Enters into a Marketing Alliance with Forest Laboratories, Inc. for AeroChamber Plus(R) Brand in the US - Extends its Franchise with Pediatricians 2Health News:VirtualHealth Technologies, Inc., Announces Its Associate, Private Access, Appoints Marc Kirshbaum as President & COO 2Health News:VirtualHealth Technologies, Inc., Announces Its Associate, Private Access, Appoints Marc Kirshbaum as President & COO 3Health News:New research on sexual function 2Health News:Elizabeth Edwards to be Opening Speaker at National Hospice Conference in Dallas 2Health News:ED Drug Relieves Lower Urinary Tract Symptoms 2Health News:Entrust IdentityGuard Enables Georgia-based Hospital Network to Deploy Strong Authentication for Remote Access 2Health News:Entrust IdentityGuard Enables Georgia-based Hospital Network to Deploy Strong Authentication for Remote Access 3
(Date:1/15/2014)... TORONTO , Jan. 15, 2014  According to ... medical technology market intelligence, the United ... occlusion (TEO) device markets will expand moderately through ... fastest-growing segments. In particular, increasing interest in drug-eluting ...
(Date:1/15/2014)... YORK , Jan. 15, 2014 ... report is available in its catalogue: ... for Advanced Drug Delivery Systems -- Focus ... STUDY OBJECTIVES ...
(Date:1/14/2014)... 14, 2014 HeartWare International, Inc . (NASDAQ: ... invasive, miniaturized circulatory support technologies that are revolutionizing the ... expects revenues for the fourth quarter of 2013 will ... to approximately $208 million. "Our full-year revenue ...
Breaking Medicine Technology:US and European Transcatheter Embolization and Occlusion Device Market to Surpass $1.6 Billion by 2022 2US and European Transcatheter Embolization and Occlusion Device Market to Surpass $1.6 Billion by 2022 3Global Markets and Technologies for Advanced Drug Delivery Systems -- Focus on End Users 2Global Markets and Technologies for Advanced Drug Delivery Systems -- Focus on End Users 3Global Markets and Technologies for Advanced Drug Delivery Systems -- Focus on End Users 4Global Markets and Technologies for Advanced Drug Delivery Systems -- Focus on End Users 5Global Markets and Technologies for Advanced Drug Delivery Systems -- Focus on End Users 6Global Markets and Technologies for Advanced Drug Delivery Systems -- Focus on End Users 7Global Markets and Technologies for Advanced Drug Delivery Systems -- Focus on End Users 8Global Markets and Technologies for Advanced Drug Delivery Systems -- Focus on End Users 9Global Markets and Technologies for Advanced Drug Delivery Systems -- Focus on End Users 10Global Markets and Technologies for Advanced Drug Delivery Systems -- Focus on End Users 11Global Markets and Technologies for Advanced Drug Delivery Systems -- Focus on End Users 12Global Markets and Technologies for Advanced Drug Delivery Systems -- Focus on End Users 13Global Markets and Technologies for Advanced Drug Delivery Systems -- Focus on End Users 14Global Markets and Technologies for Advanced Drug Delivery Systems -- Focus on End Users 15Global Markets and Technologies for Advanced Drug Delivery Systems -- Focus on End Users 16Global Markets and Technologies for Advanced Drug Delivery Systems -- Focus on End Users 17Global Markets and Technologies for Advanced Drug Delivery Systems -- Focus on End Users 18HeartWare International Announces Preliminary Fourth Quarter 2013 Revenues 2HeartWare International Announces Preliminary Fourth Quarter 2013 Revenues 3HeartWare International Announces Preliminary Fourth Quarter 2013 Revenues 4
... /PRNewswire-iReach/ -- TwinMed, LLC announced today that ... H.Eric Richard, Inc. (collectively "PrimeCare"), a New England based ... Massachusetts and Maine. "This acquisition is ... substantially increase our base of service for Long Term ...
... flu season still active and allergy season on its ... to actively seek their pharmacist,s advice about the proper ... care provider and are available to help the public ... and allergy symptoms. (Logo: http://photos.prnewswire.com/prnh/20100820/APHALOGO-a ) ...
Cached Medicine Technology:Cold, Flu and Allergy Sufferers Can Select the Best Over-the-Counter Medications with Help from Pharmacists 2Cold, Flu and Allergy Sufferers Can Select the Best Over-the-Counter Medications with Help from Pharmacists 3Cold, Flu and Allergy Sufferers Can Select the Best Over-the-Counter Medications with Help from Pharmacists 4
... An ISI technician carefully inspects your equipment ... any and all problems, and provides you with ... may be working within a tight budget so ... the intricate work of repair begins., , ISI ...
... ALT (GPT) powder reagent is intended for ... in serum. , Infinity ALT (GPT) powder ... stability once reconstituted and convenience, but ensures ... The reagent is suitable for manual use ...
... is a fully automated, versatile analyzer ... is increased due to the continuous loading ... A fully graphical user interface provides fast ... use. Konelab analyzers are delivered with full ...
Inquire...
Medicine Products: