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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)

Linking yeast genetics to mammalian genomes: identification and mapping of the human homolog of CDC27 via the expressed sequence tag (EST) data base.

We describe a strategy for quickly identifying and positionally mapping human homologs of yeast genes to cross-reference the biological and genetic information known about yeast genes to mammalian chromosomal maps. Optimized computer search methods have been developed to scan the rapidly expanding expressed sequence tag (EST) data base to find human open reading frames related to yeast protein sequence queries. These methods take advantage of the newly developed BLOSUM scoring matrices and the query masking function SEG. The corresponding human cDNA is then used to obtain a high-resolution map position on human and mouse chromosomes, providing the links between yeast genetic analysis and mapped mammalian loci. By using these methods, a human homolog of Saccharomyces cerevisiae CDC27 has been identified and mapped to human chromosome 17 and mouse chromosome 11 between the Pkca and Erbb-2 genes. Human CDC27 encodes an 823-aa protein with global similarity to its fungal homologs CDC27, nuc2+, and BimA. Comprehensive cross-referencing of genes and mutant phenotypes described in humans, mice, and yeast should accelerate the study of normal eukaryotic biology and human disease states.[1]


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