passages.id: split_1_test_1005_passage
passages.type: progene_text
passages.text: Its closest homologue , CUG - binding protein ( CUG - bp ) , is a human RBP that has been implicated in the disease myotonic dystrophy and binds CUG repeats in the 3' untranslated region ( UTR ) of the mRNA for myotonic dystrophy protein kinase ( DMPK ) [ 7 ] [ 8 ] .