Abstract
We have isolated the Xenopus homolog (Xint-1) of the mouse protooncogene int-1 from a neurula stage 17 cDNA library. The deduced protein sequence of Xint-1 includes 371 amino acids. The Xint-1 protein is more similar to the mammalian int-1 product (69%), than to the Drosophila counterpart of int-1, wingless (50%). Xint-1 shares several characteristics of secreted proteins with the other int-1 homologs: it has a hydrophobic leader, multiple conserved potential N-linked glycosylation sites and is rich in cysteine residues. All 23 cysteines are conserved in the three proteins. Xint-1 is transiently expressed during the neurula stages of early Xenopus development.
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- Baker N. E. Embryonic and imaginal requirements for wingless, a segment-polarity gene in Drosophila. Dev Biol. 1988 Jan;125(1):96–108. doi: 10.1016/0012-1606(88)90062-0. [DOI] [PubMed] [Google Scholar]
- Baker N. E. Molecular cloning of sequences from wingless, a segment polarity gene in Drosophila: the spatial distribution of a transcript in embryos. EMBO J. 1987 Jun;6(6):1765–1773. doi: 10.1002/j.1460-2075.1987.tb02429.x. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Brown A. M., Papkoff J., Fung Y. K., Shackleford G. M., Varmus H. E. Identification of protein products encoded by the proto-oncogene int-1. Mol Cell Biol. 1987 Nov;7(11):3971–3977. doi: 10.1128/mcb.7.11.3971. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Cabrera C. V., Alonso M. C., Johnston P., Phillips R. G., Lawrence P. A. Phenocopies induced with antisense RNA identify the wingless gene. Cell. 1987 Aug 14;50(4):659–663. doi: 10.1016/0092-8674(87)90039-0. [DOI] [PubMed] [Google Scholar]
- Chen E. Y., Seeburg P. H. Supercoil sequencing: a fast and simple method for sequencing plasmid DNA. DNA. 1985 Apr;4(2):165–170. doi: 10.1089/dna.1985.4.165. [DOI] [PubMed] [Google Scholar]
- Chirgwin J. M., Przybyla A. E., MacDonald R. J., Rutter W. J. Isolation of biologically active ribonucleic acid from sources enriched in ribonuclease. Biochemistry. 1979 Nov 27;18(24):5294–5299. doi: 10.1021/bi00591a005. [DOI] [PubMed] [Google Scholar]
- Dale L., Slack J. M. Fate map for the 32-cell stage of Xenopus laevis. Development. 1987 Apr;99(4):527–551. doi: 10.1242/dev.99.4.527. [DOI] [PubMed] [Google Scholar]
- Destrée O. H., Bendig M. M., De Laaf R. T., Koster J. G. Organization of Xenopus histone gene variants within clusters and their transcriptional expression. Biochim Biophys Acta. 1984 Jun 16;782(2):132–141. doi: 10.1016/0167-4781(84)90016-2. [DOI] [PubMed] [Google Scholar]
- DiNardo S., Sher E., Heemskerk-Jongens J., Kassis J. A., O'Farrell P. H. Two-tiered regulation of spatially patterned engrailed gene expression during Drosophila embryogenesis. Nature. 1988 Apr 14;332(6165):604–609. doi: 10.1038/332604a0. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Eisenberg D., Schwarz E., Komaromy M., Wall R. Analysis of membrane and surface protein sequences with the hydrophobic moment plot. J Mol Biol. 1984 Oct 15;179(1):125–142. doi: 10.1016/0022-2836(84)90309-7. [DOI] [PubMed] [Google Scholar]
- Feinberg A. P., Vogelstein B. A technique for radiolabeling DNA restriction endonuclease fragments to high specific activity. Anal Biochem. 1983 Jul 1;132(1):6–13. doi: 10.1016/0003-2697(83)90418-9. [DOI] [PubMed] [Google Scholar]
- Giebelhaus D. H., Eib D. W., Moon R. T. Antisense RNA inhibits expression of membrane skeleton protein 4.1 during embryonic development of Xenopus. Cell. 1988 May 20;53(4):601–615. doi: 10.1016/0092-8674(88)90576-4. [DOI] [PubMed] [Google Scholar]
- Harvey R. P., Melton D. A. Microinjection of synthetic Xhox-1A homeobox mRNA disrupts somite formation in developing Xenopus embryos. Cell. 1988 Jun 3;53(5):687–697. doi: 10.1016/0092-8674(88)90087-6. [DOI] [PubMed] [Google Scholar]
- Hopp T. P., Woods K. R. Prediction of protein antigenic determinants from amino acid sequences. Proc Natl Acad Sci U S A. 1981 Jun;78(6):3824–3828. doi: 10.1073/pnas.78.6.3824. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Jakobovits A., Shackleford G. M., Varmus H. E., Martin G. R. Two proto-oncogenes implicated in mammary carcinogenesis, int-1 and int-2, are independently regulated during mouse development. Proc Natl Acad Sci U S A. 1986 Oct;83(20):7806–7810. doi: 10.1073/pnas.83.20.7806. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Keller R. E. Vital dye mapping of the gastrula and neurula of Xenopus laevis. I. Prospective areas and morphogenetic movements of the superficial layer. Dev Biol. 1975 Feb;42(2):222–241. doi: 10.1016/0012-1606(75)90331-0. [DOI] [PubMed] [Google Scholar]
- Kintner C. R., Melton D. A. Expression of Xenopus N-CAM RNA in ectoderm is an early response to neural induction. Development. 1987 Mar;99(3):311–325. doi: 10.1242/dev.99.3.311. [DOI] [PubMed] [Google Scholar]
- Kozak M. An analysis of 5'-noncoding sequences from 699 vertebrate messenger RNAs. Nucleic Acids Res. 1987 Oct 26;15(20):8125–8148. doi: 10.1093/nar/15.20.8125. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Mohun T. J., Brennan S., Dathan N., Fairman S., Gurdon J. B. Cell type-specific activation of actin genes in the early amphibian embryo. Nature. 1984 Oct 25;311(5988):716–721. doi: 10.1038/311716a0. [DOI] [PubMed] [Google Scholar]
- Morata G., Lawrence P. A. Homoeotic genes, compartments and cell determination in Drosophila. Nature. 1977 Jan 20;265(5591):211–216. doi: 10.1038/265211a0. [DOI] [PubMed] [Google Scholar]
- Nusse R. The int genes in mammary tumorigenesis and in normal development. Trends Genet. 1988 Oct;4(10):291–295. doi: 10.1016/0168-9525(88)90172-2. [DOI] [PubMed] [Google Scholar]
- Nusse R., Varmus H. E. Many tumors induced by the mouse mammary tumor virus contain a provirus integrated in the same region of the host genome. Cell. 1982 Nov;31(1):99–109. doi: 10.1016/0092-8674(82)90409-3. [DOI] [PubMed] [Google Scholar]
- Papkoff J., Brown A. M., Varmus H. E. The int-1 proto-oncogene products are glycoproteins that appear to enter the secretory pathway. Mol Cell Biol. 1987 Nov;7(11):3978–3984. doi: 10.1128/mcb.7.11.3978. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Rijsewijk F. A., van Lohuizen M., van Ooyen A., Nusse R. Construction of a retroviral cDNA version of the int-1 mammary oncogene and its expression in vitro. Nucleic Acids Res. 1986 Jan 24;14(2):693–702. doi: 10.1093/nar/14.2.693. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Rijsewijk F., Schuermann M., Wagenaar E., Parren P., Weigel D., Nusse R. The Drosophila homolog of the mouse mammary oncogene int-1 is identical to the segment polarity gene wingless. Cell. 1987 Aug 14;50(4):649–657. doi: 10.1016/0092-8674(87)90038-9. [DOI] [PubMed] [Google Scholar]
- Sanger F., Nicklen S., Coulson A. R. DNA sequencing with chain-terminating inhibitors. Proc Natl Acad Sci U S A. 1977 Dec;74(12):5463–5467. doi: 10.1073/pnas.74.12.5463. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Scott M. P., Carroll S. B. The segmentation and homeotic gene network in early Drosophila development. Cell. 1987 Dec 4;51(5):689–698. doi: 10.1016/0092-8674(87)90092-4. [DOI] [PubMed] [Google Scholar]
- Sharpe C. R., Fritz A., De Robertis E. M., Gurdon J. B. A homeobox-containing marker of posterior neural differentiation shows the importance of predetermination in neural induction. Cell. 1987 Aug 28;50(5):749–758. doi: 10.1016/0092-8674(87)90333-3. [DOI] [PubMed] [Google Scholar]
- Sheard P., Jacobson M. Clonal restriction boundaries in Xenopus embryos shown with two intracellular lineage tracers. Science. 1987 May 15;236(4803):851–854. doi: 10.1126/science.3576203. [DOI] [PubMed] [Google Scholar]
- Van Dongen W. M., Moorman A. F., Destrée O. H. Histone gene expression in early development of Xenopus laevis. Analysis of histone mRNA in oocytes and embryos by blot-hybridization and cell-free translation. Differentiation. 1983;24(3):226–233. doi: 10.1111/j.1432-0436.1983.tb01324.x. [DOI] [PubMed] [Google Scholar]
- Wainwright B. J., Scambler P. J., Stanier P., Watson E. K., Bell G., Wicking C., Estivill X., Courtney M., Boue A., Pedersen P. S. Isolation of a human gene with protein sequence similarity to human and murine int-1 and the Drosophila segment polarity mutant wingless. EMBO J. 1988 Jun;7(6):1743–1748. doi: 10.1002/j.1460-2075.1988.tb03003.x. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Wilkinson D. G., Bailes J. A., McMahon A. P. Expression of the proto-oncogene int-1 is restricted to specific neural cells in the developing mouse embryo. Cell. 1987 Jul 3;50(1):79–88. doi: 10.1016/0092-8674(87)90664-7. [DOI] [PubMed] [Google Scholar]
- van Ooyen A., Kwee V., Nusse R. The nucleotide sequence of the human int-1 mammary oncogene; evolutionary conservation of coding and non-coding sequences. EMBO J. 1985 Nov;4(11):2905–2909. doi: 10.1002/j.1460-2075.1985.tb04021.x. [DOI] [PMC free article] [PubMed] [Google Scholar]
- van Ooyen A., Nusse R. Structure and nucleotide sequence of the putative mammary oncogene int-1; proviral insertions leave the protein-encoding domain intact. Cell. 1984 Nov;39(1):233–240. doi: 10.1016/0092-8674(84)90209-5. [DOI] [PubMed] [Google Scholar]
- von Heijne G. A new method for predicting signal sequence cleavage sites. Nucleic Acids Res. 1986 Jun 11;14(11):4683–4690. doi: 10.1093/nar/14.11.4683. [DOI] [PMC free article] [PubMed] [Google Scholar]