Definition of "helicase" [helicase]

• An enzyme required for DNA unwinding. (noun)

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• "When are you going to realize that helicase is not responsible for the helical structure of DNA?"
• "It seems that embedded in each gene is something called a helicase, which is part of a family of enzymes, and that this helicase, for no good reason, peels apart the two strands of chromosomes that make up your DNA, and the next thing you know you are standing at the kitchen cupboard trying to remember what the heck brought you there."
• "The New Scientist reports on a novel DNA duplication technique called helicase-dependent amplification, or HDA, that promises to speed up and simplify the process required to duplicate amplify small amounts of DNA so that you do useful stuff with it."