Nucleic Acids Research, 1993, Vol. 21, No. 20 4696-4702
© 1993
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3' truncated tRNAArg is essential for in vitro specific cleavage of partially synthesized mouse 18S rRNA
Department of Biochemistry, Hokkaido University School of Medicine Sapporo 060, Japan
Received July 15, 1993. Revised August 31, 1993. Accepted August 31, 1993.
An extensive analysis of oligonucleotide interactions was carried out by hybridising a synthetic pool of 256 10mers, A(C,T)gA, representing all oligopyrimidine octamer sequences to an array of four copies of all 256 different octapurine sequences. The resulting 256 duplexes were quantified by phosphorimaging and analysed to determine the dependence of duplex formation on base composition, sequence, and salt concentration. The results show that the base composition dependence of duplex formation can be reduced by high concentrations of tetramethylammonium chloride. This chaotropic solvent also increases duplex yield by up to fiftyfold.
*Present address: Life Science Research Laboratory, Japan Tobacco Inc.,
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