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'molecular': [76], 'masses': [77], '35,': [79], '53,': [80], '60,': [81], '66,': [82], '92,': [83], '110,': [84], '120,': [85], '150,': [86], '160': [88], 'kDa': [89], 'addition': [91, 128, 200], 'common': [94], "A'": [101], 'B"': [103], 'are': [105], 'found': [106], 'form.': [112], 'By': [113], 'using': [114], 'antibodies': [115, 158, 228], 'against': [116], 'PRP9': [118, 154], 'protein': [119, 124, 141, 186], 'from': [120], 'Saccharomyces': [121], 'cerevisiae': [122], '(a': [123], 'required': [125], 'for': [126], 'prespliceosomes': [132], 'yeast),': [134], 'we': [135], '60-kDa': [140, 185], 'specific': [142], 'human': [144], 'particles': [147], 'is': [148, 245], 'structurally': [149], 'related': [150, 191], 'yeast': [153, 194], 'protein.': [155], 'Interestingly,': [156], 'anti-PRP9': [157, 227], 'strongly': [159], 'inhibit': [160], 'prespliceosome': [161], 'resulting': [168], 'complete': [171], 'inhibition': [172], 'reaction': [177], 'vitro.': [179], 'This': [180], 'indicates': 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