| 摘要 |
The present invention provides a method of detaching a nucleic acid molecule from a solid support to which it is attached, wherein an unconventional nucleotide is incorporated at a pre-determined site in said nucleic acid molecule, said method comprising selectively cleaving said nucleic acid molecule at the site of said unconventional nucleotide. The nucleic acid molecule may be a chimeric molecule comprising a nucleic acid (nucleotide sequence) and another molecular component of a different chemical nature. Th is aspect of the invention also provides a chimeric molecule (or construct) comprising a nucleotide linker sequence comprising a selectively cleavable unconventional nucleotide at a pre-determined site, coupled to a functional group, which may be an affinity binding group or a reporter group. The invention finds utility in a number of applications, for example molecular biology procedures such as nucleic acid synthesis, amplification or sequencing, nucleic acid isolation or in affinity-based separation or assay procedures.
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