Nanotechnology Now

Our NanoNews Digest Sponsors


Heifer International

Wikipedia Affiliate Button


DHgate

Home > Press > Scientists decipher structure of nature’s ‘light switch’

Left: 3-D phytochrome map; Right: Fit-together fragments forming two sister units (one shown as ribbon, the other in space-filling format), revealing twisted structure.
Left: 3-D phytochrome map; Right: Fit-together fragments forming two sister units (one shown as ribbon, the other in space-filling format), revealing twisted structure.

Abstract:
When the first warm rays of springtime sunshine trigger a burst of new plant growth, it's almost as if someone flicked a switch to turn on the greenery and unleash a floral profusion of color.

Scientists decipher structure of nature’s ‘light switch’

Posted on June 23rd, 2010

Opening a window into this process, scientists at DOE's Brookhaven Lab and collaborators at the University of Wisconsin have deciphered the structure of a molecular "switch" known as a phytochrome that is much like the one plants use to sense light. They used a combination of electron microscopy, cryo-electron microscopy, and computational techniques to produce a 3-D map of the full structure. They then used this map to piece together the detailed structures of small phytochrome fragments that had been previously determined using x-ray crystallography.

The new structure revealed a long twisted area of contact between two individual "sister" units, with a good deal of flexibility at the untwisted ends. This structure supports the idea that the absorption of light somehow adjusts the strength or orientation of the contact, and through a series of conformation changes, transmits a signal down the length of the molecular interface. Understanding how these changes in shape send signals that help plants know when to flower, produce chlorophyll, and grow may help scientists design new ways to modify plant growth.

####

For more information, please click here

Contacts:
Karen McNulty Walsh
631.344.8350

Copyright © DOE Pulse

If you have a comment, please Contact us.

Issuers of news releases, not 7th Wave, Inc. or Nanotechnology Now, are solely responsible for the accuracy of the content.

Bookmark:
Delicious Digg Newsvine Google Yahoo Reddit Magnoliacom Furl Facebook

Related News Press

News and information

JPK’s NanoWizard AFM system is being used for cell studies in the Research Centre for Nanometer-scale Science & Advanced Materials at the Jagiellonian University in Krakow, Poland May 31st, 2016

Nanobiotix receives US$1m milestone payment from PharmaEngine: First patient injected with NBTXR3 in soft tissue sarcoma registration phase in Asia May 31st, 2016

GLOBALFOUNDRIES to Expand Presence in China with 300mm Fab in Chongqing: Company plans new manufacturing facility and additional design capabilities to serve customers in China May 31st, 2016

Nanobiotix establishes promising preclinical proof-of-concept in Immuno Oncology May 31st, 2016

Possible Futures

Fast, stretchy circuits could yield new wave of wearable electronics May 30th, 2016

Automating DNA origami opens door to many new uses: Like 3-D printing did for larger objects, method makes it easy to build nanoparticles out of DNA May 30th, 2016

Simple attraction: Researchers control protein release from nanoparticles without encapsulation: U of T Engineering discovery stands to improve reliability and fabrication process for treatments to conditions such as spinal cord damage and stroke May 28th, 2016

Doubling down on Schrödinger's cat May 27th, 2016

Academic/Education

JPK’s NanoWizard AFM system is being used for cell studies in the Research Centre for Nanometer-scale Science & Advanced Materials at the Jagiellonian University in Krakow, Poland May 31st, 2016

Graphene: Progress, not quantum leaps May 23rd, 2016

Smithsonian Science Education Center and National Space Society Team Up for Next-Generation Space Education Program "Enterprise In Space" May 11th, 2016

The University of Colorado Boulder, USA, combines Raman spectroscopy and nanoindentation for improved materials characterisation May 9th, 2016

Announcements

JPK’s NanoWizard AFM system is being used for cell studies in the Research Centre for Nanometer-scale Science & Advanced Materials at the Jagiellonian University in Krakow, Poland May 31st, 2016

Nanobiotix receives US$1m milestone payment from PharmaEngine: First patient injected with NBTXR3 in soft tissue sarcoma registration phase in Asia May 31st, 2016

GLOBALFOUNDRIES to Expand Presence in China with 300mm Fab in Chongqing: Company plans new manufacturing facility and additional design capabilities to serve customers in China May 31st, 2016

Nanobiotix establishes promising preclinical proof-of-concept in Immuno Oncology May 31st, 2016

Food/Agriculture/Supplements

Common nanoparticle has subtle effects on oxidative stress genes May 11th, 2016

Nanoparticles present sustainable way to grow food crops May 1st, 2016

Arrowhead Pharmaceuticals Presents Preclinical Data on Renal Cell Carcinoma Program at AACR 2016 April 19th, 2016

'Honeycomb' of nanotubes could boost genetic engineering April 7th, 2016

NanoNews-Digest
The latest news from around the world, FREE




  Premium Products
NanoNews-Custom
Only the news you want to read!
 Learn More
NanoTech-Transfer
University Technology Transfer & Patents
 Learn More
NanoStrategies
Full-service, expert consulting
 Learn More











ASP
Nanotechnology Now Featured Books




NNN

The Hunger Project







Car Brands
Buy website traffic