A Novel Benzoquinone Compound Isolated from Deep-Sea Hydrothermal Vent Triggers Apoptosis of Tumor Cells.Microorganisms are important sources for screening bioactive natural products.  In this study, the metabolites of bacteriophage GVE2 -infected (Geobacillus sp. E263 virus) thermophilic bacterium Geobacillus sp.  E263, which was isolated from a deep-sea hydrothermal vent, were characterized.  A novel quinoid compound, which had anti-tumor activity, was isolated from the phage-challenged thermophile. 
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