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Mol Cells. 2003 Aug 31;16(1):113-6.

A large-insert porcine library with sevenfold genome coverage: a tool for positional cloning of candidate genes for major quantitative traits.

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  • 1Division of Animal Science, College of Agriculture, Gyeongsang National University, Jinju 660- 701, Korea.


A porcine genomic bacterial artificial chromosome (BAC) library was constructed by cloning partial EcoRI-digested high-molecular-weight DNA from a Korean native boar into the EcoRI site of the pBACe3.6 vector. The library consists of about 165,000 clones with an average insert size of 125 kb, representing about seven genome equivalents of coverage. About 130,000 clones (corresponding to fivefold genome coverage) were arrayed in 14 superpools which were organized as four dimensional pools. The library was further characterized by PCR screening of 38 microsatellite probes. An average of 4.84 positive clones were selected per marker. This indicates that the library is unbiased and will be useful for initiating fine scale physical mapping of major QTL in pigs. The library is being used to isolate specific clones by screening with type I and type II marker clones located in the QTL region affecting intramuscular fat content on SSC6.

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