| Literature DB >> 9889291 |
Abstract
Bacterial artificial chromosome (BAC) libraries play a pivotal role in genomics studies. A crucial step in BAC library construction is the transformation of Escherichia coli by electroporation. Absolute efficiency (cfu/microgram DNA) is affected by a number of factors including the topological form and treatment of DNA samples. Here we report a simple new protocol using tRNA assisted precipitation that increased transformation efficiency by 70-fold for BAC ligations and up to 400-fold for plasmid ligations. The mechanism may involve altering or stabilizing the topographical form of the DNA molecules.Entities:
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Year: 1999 PMID: 9889291 PMCID: PMC148265 DOI: 10.1093/nar/27.3.910
Source DB: PubMed Journal: Nucleic Acids Res ISSN: 0305-1048 Impact factor: 16.971