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Construction of YAC libraries with large inserts
Simon Foote1, Christopher Denny
1Whitehead Institute, Cambridge, Massachusetts, USA.
Abstract:
The yeast artificial chromosome (YAC) cloning system makes it possible to clone large pieces of genomic DNA into yeast. Libraries have been made containing clones with inserts in the megabase-pair range. The basic protocol in this unit describes preparation of YAC vectors and transformation of ligated DNA into yeast spheroplasts. A support protocol describes titration of Lyticase to make spheroplasts. Additional support protocols detail two methods for partial digestion of genomic DNA: EcoRI restriction endonuclease-EcoRI methylase competition and the partial digestion of genomic DNA by use of limiting amounts of Mg2+, respectively.
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