Some Cold Water On Hot Enzyme R&D

A DECADE AGO, SCIENTISTS were thrilled by the discovery of single-celled creatures that thrive in hot volcanic vents under the sea. By learning how these hyperthermophiles remained stable above 100C--temperatures lethal to all other life forms--they hoped to create sturdy industrial enzymes that would make everything from sweeteners to cleansers. Now, researchers unlocking the critters' secrets question that approach.

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