One of the hardiest microbes on Earth, Pyrococcus abyssi, has just had its entire genetic blueprint deciphered. P. abyssi was found in samples taken during a deep-sea expedition to a hydrothermal vent system. The genes which allow them to survive the extreme conditions could be of great use to bio-industry. The vents are some of the most inhospitable places on Earth. There is no sunlight, the temperature is over 100 degrees Centigrade and the pressure is hundreds of times more intense than on the Earth's surface.
Vents are where super-heated water squirts out of the sea floor.
It likes conditions that the vast majority of other organisms would find impossible to live in. It thrives best at temperatures of about 103 degrees Centigrade and under pressures of about 200 atmospheres. An international team of scientists has just completed a map of the 1.7 million segments of its DNA, as part of an international effort to determine the genetic blueprints of organisms which live in unusual places. Not only do they reveal that life can adapt to environments that were thought to be impossible but also because the molecular basis of that adaptation could provide industrial spin-offs. For example, in order to survive microbes like Pyrococcus abyssi have to have a sophisticated and robust DNA repair mechanism based on heat-stable enzymes.