Surprising enzymes found in giant ocean viruses

phys.org | 3/29/2018 | Staff
n.king (Posted by) Level 3
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A new study led by researchers at Woods Hole Oceanographic Institution (WHOI) and Swansea University Medical School furthers our knowledge of viruses—in the sea and on land— and their potential to cause life-threatening illnesses. Their findings, which examine newly-identified genes carried by mysterious "giant" viruses, could represent potential new drug targets for giant viruses linked to human diseases. The work published this week in Proceedings of the National Academy of Sciences.

An international team of researchers team searched more than 8,000 virus genomes and found that many newly-discovered giant viruses contain multiple genes for a type of enzyme called cytochrome P450. P450 enzymes are common in animals, plants and bacteria, but finding them in new viruses is unexpected. Prior to the giant viruses, it was never considered that viruses would have these genes.

Finding - Biologist - John - Stegeman - Author

"This is an extremely interesting finding," says biologist John Stegeman, senior author of the paper and the director of the Woods Hole Center for Oceans and Human Health at WHOI. "In animals, P450 enzymes metabolize drugs, make steroid hormones, and defend against pollutants. We have yet to find out what they are doing in these viruses, but for sure they are unique, unlike P450s in any other organism."

P450 enzymes, which constitute one of the largest enzyme superfamilies known, may also have major implications for understanding...
(Excerpt) Read more at: phys.org
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