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dc.contributor.authorLlimargas, Marta-
dc.contributor.authorLawrence, Peter A.-
dc.date.accessioned2010-11-08T13:26:29Z-
dc.date.available2010-11-08T13:26:29Z-
dc.date.issued2001-11-20-
dc.identifier.citationProceedings of the National Academy of Sciences of the USA 98(25): 14487–14492 (2001)es_ES
dc.identifier.issn0027-8424-
dc.identifier.urihttp://hdl.handle.net/10261/28943-
dc.description6 pages, 5 figures.-- PMID: 11717401 [PubMed].-- PMCID: PMC64708.es_ES
dc.description.abstractSequencing of the Drosophila genome has revealed that there are “silent” homologues of many important genes—family members that were not detected by classic genetic approaches. Why have so many homologues been conserved during evolution? Perhaps each one has a different but important function in every system. Perhaps each one works independently in a different part of the body. Or, perhaps some are redundant. Here, we take one well known gene family and analyze how the individual members contribute to the making of one system, the tracheae. There are seven DWnt genes in the Drosophila genome, including wingless (wg). The wg gene helps to pattern the developing trachea but is not responsible for all Wnt functions there. We test each one of the seven DWnts in several ways and find evidence that wg and DWnt2 can function in the developing trachea: when both genes are removed together, the phenotype is identical or very similar to that observed when the Wnt pathway is shut down. DWnt2 is expressed near the tracheal cells in the embryo in a different pattern to wg but is also transduced through the canonical Wnt pathway. We find that the seven DWnt genes vary in their effectiveness in specific tissues, such as the tracheae, and, moreover, the epidermis and the tracheae respond to DWnt2 and Wg differently. We suggest that the main advantage of retaining a number of similar genes is that it allows more subtle forms of control and more flexibility during evolution.es_ES
dc.description.sponsorshipWe thank Gary Struhl for his advice and generosity in giving us stocks carrying UASDWnts before publication. We also thank J. Casal, J. Casanova, M. Furriols, K. Kozopas, and J. P. Vincent for advice and M. Northcote for skilled assistance. K. Kozopas, C. Logan, and R. Nusse kindly gave us DWnt2 alleles and DWnt2 cDNA. We thank I. Alvarez, M. Bienz, J. Bolivar, H. Jäckle, F. Mourkioti, D. Page, R. Schuh, G. Struhl, M. Ruiz-Gomez, J. P. Vincent, E. Wilder, and the Developmental Studies Hybridoma Bank for fly stocks and reagents. M.L. has been supported by a Long-Term EMBO Fellowship.es_ES
dc.language.isoenges_ES
dc.publisherNational Academy of Sciences (U.S.)es_ES
dc.rightsopenAccesses_ES
dc.titleSeven Wnt homologues in Drosophila: a case study of the developing tracheaees_ES
dc.typeartículoes_ES
dc.identifier.doi10.1073/pnas.251304398-
dc.description.peerreviewedPeer reviewedes_ES
dc.relation.publisherversionhttp://dx.doi.org/10.1073/pnas.251304398es_ES
dc.identifier.e-issn1091-6490-
dc.identifier.pmid11717401-
dc.type.coarhttp://purl.org/coar/resource_type/c_6501es_ES
item.openairetypeartículo-
item.cerifentitytypePublications-
item.languageiso639-1en-
item.grantfulltextopen-
item.openairecristypehttp://purl.org/coar/resource_type/c_18cf-
item.fulltextWith Fulltext-
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