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EST-based gene discovery in pig: virtual expression patterns and comparative mapping to human

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Abstract

A molecular understanding of porcine reproduction is of biological interest and economic importance. Our Midwest Consortium has produced cDNA libraries containing the majority of genes expressed in major female reproductive tissues, and we have deposited into public databases 21,499 expressed sequence tag (EST) gene sequences from the 3′ end of clones from these libraries. These sequences represent 10,574 different genes, based on sequence comparison among these data, and comparison with existing porcine ESTs and genes indicate as many as 4652 of these EST clusters are novel. In silico analysis identified sequences that are expressed in specific pig tissues or organs and confirmed the broad expression in pig for many genes ubiquitously expressed in human tissues. Furthermore, we have developed computer software to identify sequence similarity of these pig genes with their human counterparts, and to extract the mapping information of these human homologues from genome databases. We demonstrate the utility of this software for comparative mapping by localizing 61 genes on the porcine physical map for Chromosomes (Chrs) 5, 10, and 14.

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Acknowledgements

This work was supported by USDA-NRICGP 99-35205-8370 and by the office of the Vice-Provost, Iowa State University. This journal paper of the Iowa Agriculture and Home Economics Experiment Station, Ames, Iowa, Project No. 3596, was also supported by the Hatch Act and State of Iowa funds. We gratefully acknowledge the contributions of Darla Hartzler, Katie Barry, Catherine Keppel, Kurtis Trout, Mark Lebeck, Katrina Fishler, and Kelly Schaefer for technical assistance; Chad Roberts for bioinformatic support; and Sara Olberding and Kerry Burns in generating mapping data. Also published as paper number 13955 of the journal series, Nebraska Agricultural Experiment Station.

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Tuggle, C.K., Green, J.A., Fitzsimmons, C. et al. EST-based gene discovery in pig: virtual expression patterns and comparative mapping to human . Mamm Genome 14, 565–579 (2003). https://doi.org/10.1007/s00335-002-2263-7

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