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Open Access Discovery notes

A DNA topoisomerase IB in Thaumarchaeota testifies for the presence of this enzyme in the last common ancestor of Archaea and Eucarya

Céline Brochier-Armanet*, Simonetta Gribaldo and Patrick Forterre

Biology Direct 2008, 3:54 doi:10.1186/1745-6150-3-54

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