helical helical  /ˈhɛ lɪ kəl/

Definition(s):

  • (adj) in the shape of a coil

Usage(s):

  1. His biggest biological success came from his 1951 proposal of the alpha-helical fold for protein molecules, which everybody else thought were too large and complex to study.
  2. He tried to engage Franklin in debate about the idea that DNA was helical, which she still insisted was unsupported by evidence.
  3. DNA must be a helix after all, and on a cold train ride back to Cambridge, Watson decided that two helical sugar-phosphate backbones made more sense than three.

News

  • Miniature Aircraft USA Debuts the Whiplash 700EX at IRCHA

    The completely redesigned Whiplash 700EX has been fine tuned to enhance performance and reduce maintenance. The helical drivetrain provides a smoother, quieter gearing system and the side-by-side battery mounting system allows for a wider range of flight battery sizes to be used while retaining a perfect center of gravity. (PRWeb August 02, 2013) Read the full story at http://www.prweb.com ...
    on August 2, 2013     Source: PRWeb

Quotes

  1. "DNA's helical structure implies that twisting and stretching should be coupled, hence the prediction that DNA should unwind when stretched," said biophysicist Carlos Bustamante, who led this experiment. "That is why it was such surprise when...
    on Aug 7, 2006 By: Carlos Bustamante Source: AScribe (press release)

  2. "When you examine the structure of usual alpha-helical membrane proteins, they look like a big disk of protein that snakes back and forth through the membrane. But when you look at the voltage-dependent potassium channel, you see the pore embedded...
    on Nov 16, 2007 By: Roderick MacKinnon Source: HealthNewsDigest.com

  3. "Not only did he discover with Jim Watson the double-helical structure of DNA, but Francis Crick intuited the mechanism by which the genetic code is written and read out," Lander said. "Those three things -- the double helix, [RNA] molecules,...
    on Jul 30, 2004 By: Eric Lander Source: Boston Globe (registration)

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