Nucleic Acids Research, Vol 27, Issue 10 e2-e2, Copyright © 1999 by Oxford University Press
P Kumar and KC Gupta
Two sets of deprotection conditions have been evolved for the deprotection
of oligodeoxyribonucleotides and their cleavage from commercially available
cis -diol group-bearing universal polymer supports. In the first case,
oligodeoxyribonucleotides anchored on the universal support were subjected
to one of the standard deprotection conditions followed by treatment with
aqueous 0.5 M sodium chloride + 0.2 M sodium hydroxide solution for 30 min
at room temperature. In the second case, oligonucleotides bound to the
universal support were treated with methanolic sodium hydroxide solution
under microwave radiation to obtain fully deprotected oligomers within 4
min. Under both conditions, the cleavage of oligonucleotides from the
support and their deprotection occurred quantitatively without any side
product formation. The cleaved oligonucleotides were found to be identical
in all respects (retention time on HPLC and biological activity in PCR) to
the corresponding standard oligo-nucleotides.
ARTICLES
Rapid conditions for the cleavage of oligodeoxyribonucleotides from cis- diol-bearing universal polymer supports and their deprotection
Nucleic Acids Research Laboratory, Centre for Biochemical Technology, Mall Road, Delhi University Campus, Delhi-110 007, India
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