Ice Cream, Organs, and Antifreeze Proteins

  • Author: ChemistryViews
  • Published: 13 April 2011
  • Copyright: Wiley-VCH Verlag GmbH & Co. KGaA
  • Source / Publisher: Proc. Natl. Acad. Sci./National Academy of Sciences
thumbnail image: Ice Cream, Organs, and Antifreeze Proteins

Fish, insects, bacteria, and plants that live in sub-zero environments rely on antifreeze proteins (AFPs) to survive. AFPs bind to the surface of ice crystals and prevent them from growing. Industrially, AFPs are used to control ice-crystal growth in the production of ice cream and frozen yogurt.


Peter Davies and co-workers, Queen’s University, Ontario, Canada, have reported a X-ray crystallographic picture of the AFP∶ice interaction. An unobstructed view of the interaction was possible thanks to an exposed ice-binding site in an Antarctic bacterium. This revealed hydrophobic sites that pre-order water near the protein surface into an ice-like cage. Once ordered, the cage can be bound to the surface via the hydrogen bonds of the hydrophilic sites.
In addition to improving the quality of ice cream, this understanding could lead to new AFPs for the preservation of transplant organs and tissues.


Article Views: 3813

Sign in Area

Please sign in below

Additional Sign In options

Please note that to comment on an article you must be registered and logged in.
Registration is for free, you may already be registered to receive, e.g., the newsletter. When you register on this website, please ensure you view our terms and conditions. All comments are subject to moderation.

Article Comments - To add a comment please sign in

Bookmark and Share

If you would like to reuse any content, in print or online, from ChemistryViews.org, please contact us first for permission. more


CONNECT:

ChemistryViews.org on Facebook

ChemistryViews.org on Twitter ChemistryViews.org on YouTube ChemistryViews.org on LinkedIn Sign up for our free newsletter


A product of ChemPubSoc Europe (16 European Chemical Societies)and Wiley-VCH