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

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Mangin, M. et al.

Identification of a cDNA encoding a parathyroid hormone-like peptide from a human tumor associated with humoral hypercalcemia of malignancy.

Humoral hypercalcemia of malignancy is a common paraneoplastic syndrome that appears to be mediated in many instances by a parathyroid hormone-like peptide. Poly(A)+ RNA from a human renal carcinoma associated with this syndrome was enriched by preparative electrophoresis and used to construct an enriched cDNA library in phage lambda gt10. The library was screened with a codon-preference oligonucleotide synthesized on the basis of a partial N-terminal amino acid sequence from a human tumor-derived peptide, and a 2.0-kilobase cDNA was identified. The cDNA encodes a 177 amino acid protein consisting of a 36 amino acid leader sequence and a 141 amino acid mature peptide. The first 13 amino acids of the deduced sequence of the mature peptide display strong homology to human PTH, with complete divergence thereafter. RNA blot-hybridization analysis revealed multiple transcripts in mRNA from tumors associated with the humoral syndrome and also in mRNA from normal human keratinocytes. Southern blot analysis of genomic DNA from humans and rodents revealed a simple pattern compatible with a single-copy gene. The gene has been mapped to chromosome 12.[1]

References

Identification of a cDNA encoding a parathyroid hormone-like peptide from a human tumor associated with humoral hypercalcemia of malignancy. Mangin, M., Webb, A.C., Dreyer, B.E., Posillico, J.T., Ikeda, K., Weir, E.C., Stewart, A.F., Bander, N.H., Milstone, L., Barton, D.E. Proc. Natl. Acad. Sci. U.S.A. (1988) [Pubmed]

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