MIT: Reversing The Conventional DNA Wisdom - Researchers Find DNA Is Transcribed By Divergent Polymerases

The copying of DNA’s master instructions into messenger molecules of RNA, a process known as DNA transcription, has always been thought to be a unidirectional process whereby a copying machine starts and moves in one direction. But in work that represents a fundamental shift in scientists’ understanding of the phenomenon, MIT researchers have found evidence that two DNA copying machines frequently start from the same site and move in different directions.

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Filed under: Biology on December 6th, 2008