tokens: While mutations in K-Rev that inactivate any one of these properties also blocked K-Rev dependent nuclear RNA export , several K-Rev mutants were comparable to wild type when assayed for any of these individual activities yet nevertheless defective for RNA export .
folded_tokens: while mutation in k-rev that inactivate any one of these property also block k-rev dependent nuclear rna export , several k-rev mutant be comparable to wild type when assay for any of these individual activity yet nevertheless defective for rna export .