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Proc Natl Acad Sci U S A. 1996 May 28;93(11):5562-6.

Ordered yeast artificial chromosome clones representing the Dictyostelium discoideum genome.

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  • 1Department of Biochemistry, Baylor College of Medicine, Houston, TX 77030, USA.


High resolution gene maps of the six chromosomes of Dictyostelium discoideum have been generated by a combination of physical mapping techniques. A set of yeast artificial chromosome clones has been ordered into overlapping arrays that cover >98% of the 34-magabase pair genome. Clones were grouped and ordered according to the genes they carried, as determined by hybridization analyses with DNA fragments from several hundred genes. Congruence of the gene order within each arrangement of clones with the gene order determined from whole genome restriction site mapping indicates that a high degree of confidence can be placed on the clone map. This clone-based description of the Dictyostelium chromosomes should be useful for the physical mapping and subcloning of new genes and should facilitate more detailed analyses of this genome. cost of silicon-based construction and in the efficient sample handling afforded by component integration.

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