Navigation Links
Are U.S. Flu Death Figures More PR Than Science?

Looking through his handmade microscope in 1702, it was Anton van Leeuwenhoek who first described the workings of a nano machine. He observed the rapid contraction of a stalk tethering the cell body of a tiny protozoan, Vorticella convallaria, to the surface of a leaf. Little did van Leeuwenhoek imagine that more than 300 years later, the biological spring that drives Vorticella would set records for speed and power in the nano world of cellular engines.

It might also power future generations of nano devices and materials, according to biological engineer Danielle Cook France and colleagues at MIT, the Whitehead Institute, the Marine Biological Laboratory, and the University of Illinois, Chicago. France presented her findings Sunday at the 45th Annual Meeting of the American Society for Cell Biology in San Francisco.

The spring in the unicellular Vorticella is a contractile fiber bundle, called the spasmoneme, which runs the length of the stalk. At rest, the stalk is elongated like a stretched telephone cord. When it contracts, the spasmoneme winds back in a flash, forming a tight coil. To find out how fast and how hard Vorticella recoils, France and colleagues used modern microscopes and tools to measure the force and speed of the spring. This is one powerful engine, France reports. The spasmoneme's contraction is measured in nano-newtons of force and centimeters/second of speed in a biological world where the ruler markings are usually in tiny pico-newtons and micrometers/second. Gram for gram, the power of the spasmoneme engine outperforms human muscles and car engines.

It also runs on a different fuel. Molecular motors that power muscle contraction, for example, use ATP molecules for energy. The spasmoneme runs on calcium, but its drive mechanism was poorly understood until France and colleagues got under the nano hood. Like van Leeuwenhoek, the researchers studied Vorticella under the microscope but they also had specialized biochemical
'"/>

Source:


Page: 1 2

Related biology news :

1. New Estimates For The Causes Of Child Deaths Worldwide
2. Measles Deaths Worldwide Drop By Nearly 40% Over Five Years
3. Morphine for Chest Pain Increases Death Risk
Post Your Comments:
*Name:
*Comment:
*Email:
TAG: Are Flu Death Figures More Than Science

(Date:12/17/2014)... 15, 2014 Research and Markets ( http://www.researchandmarkets.com/research/s6qzt5/samsung_galaxy_s5 ... Galaxy S5 - Home Button Synaptics Fingerprint Sensor Technology ... http://photos.prnewswire.com/prnh/20130307/600769 Based on a ... introduces for the first time a fingerprint sensor in ...
(Date:12/17/2014)... Markets ( http://www.researchandmarkets.com/research/9zq33j/global_chemical ) has announced the ... report to their offering. ... in this market is the increasing demand for medical ... of patient data for quick and correct diagnosis during ...
(Date:12/11/2014)... and Markets , http://photos.prnewswire.com/prnh/20130307/600769 ... the addition of the "Biometrics Market in India ... One major trend emerging in this market is the ... more than one characteristic of an individual for verification ...
Breaking Biology News(10 mins):Samsung Galaxy S5 - Home Button Synaptics Fingerprint Sensor Technology Analysis 2Global Chemical Sensor Market 2015-2019: Key Vendors are Abbott Laboratories, Bayer, Hoffmann La-Roche, Johnson & Johnson, NGK Spark Plugs and Robert Bosch 2Biometrics Market in India 2015-2019: Key Vendors are 3M Cogent, NEC, Safran and Suprema 2
... decrease in yield and an increase in the concentration of ... with the results of previous studies which have shown a ... seeds in high ozone, these results (to be presented at ... on 29th June 2009) could signal a significant income loss ...
... serious demands for the organism, and this is true even ... the ancestors of present marine mammals initiated their return to ... new medium. Dr. Michael Berenbrink and his colleagues at Liverpool ... delivering oxygen to the muscles during locomotion, has been modified ...
... SALT LAKE CITY, June 29, ... use computers and may let amputees control bionic limbs. But existing devices ... Utah study shows that brain signals controlling arm movements can be detected ... it. ...
Cached Biology News:Natural-born divers and the molecular traces of evolution 2Reading the brain without poking it 2Reading the brain without poking it 3Reading the brain without poking it 4Reading the brain without poking it 5
(Date:1/22/2015)... 2015 Dr. Greg Leyer of UAS Labs ... Natural Supplements Pre-Conference seminar on probiotics in San Diego, CA. ... continuing education conference for health care professionals. This year’s pre-conference ... of probiotics in health. Dr. Leyer spoke about the emerging ...
(Date:1/22/2015)... (PRWEB) January 22, 2015 Selexis SA, ... mammalian Research Cell Banks (RCBs) used for drug discovery ... Cell Banks will include Next-Generation Sequencing (NGS) ... architecture de-risks biologic manufacturing by ensuring the integrity of ...
(Date:1/22/2015)... , Nueva Jersey , 22 de enero de ... Biomedical Research abre hoy su llamada a nominaciones para ... investigación científica ha hecho, o tiene el potencial para ... humana. Las nominaciones se aceptarán hasta el 15 de ...
(Date:1/22/2015)... , Jan. 22. 2015  Varian Medical Systems (NYSE: ... has been honored for its commitment to sustainability with inclusion ... Varian is the highest ranked healthcare equipment company among the ... during the World Economic Forum at Davos, Switzerland ...
Breaking Biology Technology:Selexis Generated Research Cell Banks Now Fully Sequenced Using Next-Generation Sequencing 2El Dr. Paul Janssen Award for Biomedical Research emite su llamada a los nominados para 2015 2El Dr. Paul Janssen Award for Biomedical Research emite su llamada a los nominados para 2015 3El Dr. Paul Janssen Award for Biomedical Research emite su llamada a los nominados para 2015 4Varian Honored Among World's 100 Most Sustainable Corporations 2
... 2011 Optimer Pharmaceuticals, Inc. (Nasdaq: OPTR ... financial results after the NASDAQ Global Market closes on ... that day at 5:00 p.m. Eastern Time (2:00 p.m. ... for the third quarter as well as provide a ...
... 2011 At the eighth annual Indiana Life Sciences ... the founder of Bloomington-based Cook Group and one of ... M. Watanabe Life Sciences Champion of the Year award.  ... a tribute to his friend and colleague. ...
... BOSTON, Oct. 26, 2011 13 leading industry speakers will ... Electronic Trial Master Files on November 14-15, 2011 in ... educational exploration of the major shift taking place in the ... Often called the heart of a clinical ...
Cached Biology Technology:Optimer Pharmaceuticals to Host Conference Call and Webcast to Discuss Third Quarter 2011 Financial Results 2BioCrossroads Awards Indiana Life Sciences Leaders 2BioCrossroads Awards Indiana Life Sciences Leaders 3BioCrossroads Awards Indiana Life Sciences Leaders 4
The AVR9-8 stream-select valve is a 9-port, 8-position valve for use with the BioLogic DuoFlow system. This valve is used for high-pressure stream selection....
... Versatile stain for staining RNA (bluish-purple), DNA (blue), proteins ... TLC ≥ 90 % Cation traces: Ca ≤ 10 ... Cr ≤ 5 mg/kg Cu ≤ 5 mg/kg Fe ... 5 mg/kg Mn ≤ 5 mg/kg Na ≤ 50 ...
... Biometras Tpersonal thermocycler provides maximum performance ... generation of Peltier elements, high heating and ... to short run times. With a maximum ... Tpersonal provides half the capacity of much ...
... One-Step Deparaffinization Solution is available ... is an easy-to-use reagent for dewaxing ... immunohistochemistry, in situ hybridization, or other ... paraffin removal consists of dipping the ...
Biology Products: