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Blog Pick of the Month – June 2009

In June, there were 25 blog posts covering PLoS ONE articles aggregated on Again – this is becoming cliche, but it’s true – I was thoroughly enjoying reading all of them and the decision was really hard to make. So I started narrowing down to semi-finalist, then finalists, and in the end… Pick for Blog of the Month for June 2009 is….:

Iddo Friedberg of Byte Size Biology for his post Glowing like a horse which covered the article by McDonald, R., Fleming, R., Beeley, J., Bovell, D., Lu, J., Zhao, X., Cooper, A., & Kennedy, M. Latherin: A Surfactant Protein of Horse Sweat and Saliva. From the Abstract:

Horses are unusual in producing protein-rich sweat for thermoregulation, a major component of which is latherin, a highly surface-active, non-glycosylated protein. The amino acid sequence of latherin, determined from cDNA analysis, is highly conserved across four geographically dispersed equid species (horse, zebra, onager, ass), and is similar to a family of proteins only found previously in the oral cavity and associated tissues of mammals. Latherin produces a significant reduction in water surface tension at low concentrations (≤1 mg ml−1), and therefore probably acts as a wetting agent to facilitate evaporative cooling through a waterproofed pelt. Neutron reflection experiments indicate that this detergent-like activity is associated with the formation of a dense protein layer, about 10 Å thick, at the air-water interface. However, biophysical characterization (circular dichroism, differential scanning calorimetry) in solution shows that latherin behaves like a typical globular protein, although with unusual intrinsic fluorescence characteristics, suggesting that significant conformational change or unfolding of the protein is required for assembly of the air-water interfacial layer. RT-PCR screening revealed latherin transcripts in horse skin and salivary gland but in no other tissues. Recombinant latherin produced in bacteria was also found to be the target of IgE antibody from horse-allergic subjects. Equids therefore may have adapted an oral/salivary mucosal protein for two purposes peculiar to their lifestyle, namely their need for rapid and efficient heat dissipation and their specialisation for masticating and processing large quantities of dry food material.

Iddo’s post is a great example of translating scientific terminology into language that everyone can understand and is also humorous and fun to read. Congratulations both to Iddo and to the authors of the article. I have notified the winners and their prizes are on the way.

I hope you read Iddo’s post and post a comment of your own, and then go to the article itself to read it and post comments, notes and ratings there as well. And don’t forget to send trackbacks to the article when you blog about it, and to make sure that your post is aggregated on to be eligible for the next month’s prize.

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