fourth domain of life

Forget the fourth domain of life

When giant viruses were discovered – with genomes much larger than any previously seen – some suggested that they had descended from a fourth domain of life (the current three are bacteria, archaea, and eukaryotes). Part of the reason for such a claim was the finding of homologs of bacterial and eukaryotic genes, including molecules involved …

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TWiV 261: Giants among viruses

On episode #261 of the science show This Week in Virology, Vincent meets up with Chantal and Jean-Michel at the first International Symposium on Giant Virus Biology in Tegernsee, Germany, to discuss their work on Mimivirus, Megavirus, and Pandoravirus. You can find TWiV #261 at www.microbe.tv/twiv.

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