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Dance of water molecules turns fire-colored beetles into antifreeze artists
Date:1/2/2013

g surface of the protein facilitates the docking of the nano ice crystals," Martina Havenith speculated. In accordance with this, the researchers found little change in the movement of the water molecules in an inactive mutant of the antifreeze protein.

More efficient than in fish

The antifreeze proteins of the fire-coloured beetle are ten to one hundred times more active than those of Arctic and Antarctic fish that need to protect themselves against temperatures of -1.9 degrees Celsius. The insects achieve this high antifreeze activity through the combination of the two strategies: direct interaction between proteins and ice and interaction via water molecules.

Observing the role of the solvent

"The special role of water in natural antifreeze is an excellent example demonstrating that when looking at the function of a biomolecule, you not only have to consider its 3D structure, but also its entire environment - especially the solvent; in this case water," Prof. Havenith said. This topic is the focus of the cluster of excellence RESOLV, which was launched on the 1st November 2012 at the RUB and whose spokesperson is Martina Havenith. The current studies were funded by the Volkswagen Foundation.


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Contact: Martina Havenith
Martina.Havenith@rub.de
49-234-322-8249
Ruhr-University Bochum
Source:Eurekalert

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