Nucleic Acids Research, Vol 25, Issue 20 4165-4166, Copyright © 1997 by Oxford University Press
C Li and RM Evans
Here we report the use of exonuclease to expose complementary DNA between
an insert and vector such that annealing becomes independent of restriction
site compatibility. We demonstrate that unusual and, in some cases,
previously impossible cloning strategies can be readily and efficiently
achieved as long as the flanking sequences of the linear vectors are highly
related. Furthermore, we show that the bacterial repair system resolves the
residual mismatches, overhangs or gaps in a predictable fashion to generate
excisable inserts. This approach facilitates cloning regardless of
restriction site compatibility and overcomes an important limitation in
current cloning techniques.
ARTICLES
Ligation independent cloning irrespective of restriction site compatibility
Gene Expression Laboratory, The Salk Institute for Biological Studies, Howard Hughes Medical Institute, 10010 North Torrey Pines Road, La Jolla, CA 92186, USA. cli@axpl.salk.edu
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