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Eye on RNA unwinding

Biochemical studies on the spliceosomal helicase Brr2 reveal that it is activated by Prp8, the master regulator of the splicing cycle. Substitutions in Prp8 that cause retinal degeneration in humans block activation of Brr2, providing insight into the molecular pathology of retinitis pigmentosa.

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Figure 1: A C-terminal fragment of yeast Prp8 (Prp8-CTF) stimulates unwinding of the U4/U6 RNA complex by Brr2.

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Brow, D. Eye on RNA unwinding. Nat Struct Mol Biol 16, 7–8 (2009). https://doi.org/10.1038/nsmb0109-7

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