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Construction of a human MluI YAC library
1Max-Planck-Institut für Experimentelle Medizin, Abt. Molekulare Neuroendokrinologie, Göttingen, Germany.
Genomics
|May 1, 1994
Summary
We developed a method to create a human genomic library using yeast artificial chromosomes (YACs), achieving large average insert sizes of 600 kb with high recombination rates.
Area of Science:
- Genomics
- Molecular Biology
- Biotechnology
Background:
- Construction of comprehensive human genomic libraries is crucial for genetic research.
- Yeast artificial chromosomes (YACs) are valuable tools for cloning large DNA fragments.
Purpose of the Study:
- To establish an efficient cloning strategy for a high-quality human genomic library in YACs.
- To optimize YAC construction methods for large insert sizes and high recombination efficiency.
Main Methods:
- High-molecular-weight human DNA was completely digested with the restriction enzyme MluI.
- MluI fragments were cloned into the pYAC-RC vector.
- Size fractionation was performed using preparative pulsed-field gel electrophoresis.
Main Results:
- A human genomic library was generated with an average insert size of 600 kb.
- Ninety-seven percent of clones were recombinant, indicating efficient cloning.
- The library comprises 5000 clones, representing one human genome equivalent.
- Nineteen percent of YACs exceeded 1.2 Mb.
Conclusions:
- The described MluI-based cloning strategy effectively produces large-insert YACs for a human genomic library.
- Size fractionation post-ligation is effective for obtaining large YAC inserts.
- The resulting library is a valuable resource for genomic studies.