Just like your left and right hand exist as mirror images of each other, many biological molecules have their own form of left- and right-handedness, called chirality. Our DNA, for example, is made of ...
It is often desirable to restrict flows—whether of sound, electricity, or heat—to one direction, but naturally occurring systems almost never allow this. However, unidirectional flow can indeed be ...
Salk scientists engineered a right-handed RNA enzyme (bottom left) that can combine left-handed RNA fragments (bottom right) to create a mirror image of itself. The new left-handed RNA enzyme (top ...
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