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

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Unno, M. et al.

Structure, chromosomal localization, and expression of mouse reg genes, reg I and reg II. A novel type of reg gene, reg II, exists in the mouse genome.

We previously identified a gene, reg (i.e. regenerating gene), in the screening of a regenerating islet-derived cDNA library of rat (Terazono, K., Yamamoto, H., Takasawa, S., Shiga, K., Yonemura, Y., Tochino, Y., and Okamoto, H. (1988) J. Biol. Chem. 263, 2111-2114), and isolated a human reg cDNA and gene (Watanabe, T., Yonekura, H., Terazono, K., Yamamoto, H., and Okamoto, H. (1990) J. Biol. Chem. 265, 7432-7439); the rat and human cDNAs encode 165- and 166-amino acid proteins, respectively. Until now, it was thought that there is a single locus for Reg protein in the mammalian genome. In this study, we isolated two distinct cDNAs and genes, one of which was a mouse homologue to rat and human reg gene, the other a novel type of reg gene. We designated them reg I and reg II, respectively. The two proteins encoded by these genes share 76% amino acid sequence identity with each other. Both genes span about 3 kilobase pairs, and the genomic organization of six exons and five introns is conserved between them. Chromosomal mapping studies indicate that the reg I gene is localized on mouse chromosome 12, whereas the reg II gene is localized on chromosome 3. By Northern blot analysis, both reg I and reg II mRNAs are detected in the normal pancreas and hyperplastic islets of aurothioglucose-treated mice, but not in the normal islets. It is remarkable that in the gallbladder reg I is expressed, but reg II is not.[1]

References

Structure, chromosomal localization, and expression of mouse reg genes, reg I and reg II. A novel type of reg gene, reg II, exists in the mouse genome. Unno, M., Yonekura, H., Nakagawara, K., Watanabe, T., Miyashita, H., Moriizumi, S., Okamoto, H., Itoh, T., Teraoka, H. J. Biol. Chem. (1993) [Pubmed]

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