MBNL1 and myotonic dystrophy type 1: Results of recent work by others in a variety of organisms indicate that some effects of myotonic dystrophy type 1 are mediated by sequestration of MBNL1 by RNA containing expansion of repetitive non-protein-coding sequences, as reviewed in 34, and that MBNL1 can bind to its recognition motif when it is in DNA form [35].