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RNA structural rearrangement via unwinding and annealing by the cyanobacterial RNA helicase, CrhR
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Owttrim, George W., Chamot, Danuta, Kujat-Choy, Sonya L., Colvin, Kimberley R.
Rearrangement of RNA secondary structure is crucial for numerous biological processes. RNA helicases participate in these rearrangements through the unwinding of duplex RNA. We report here that the redox-regulated cyanobacterial RNA helicase, CrhR, is a bona fide RNA helicase possessing both RNA
characteristic of RNA helicases. Biochemically, CrhR resembles RecA and related proteins that catalyze strand exchange and branch migration on DNA substrates, a characteristic that is reflected in the recently reported structural similarities between these proteins. The data indicate the potential for CrhR to