English   español  
Por favor, use este identificador para citar o enlazar a este item: http://hdl.handle.net/10261/4050
Compartir / Impacto:
Estadísticas
Add this article to your Mendeley library MendeleyBASE
Ver citas en Google académico
Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Exportar otros formatos: Exportar EndNote (RIS)Exportar EndNote (RIS)Exportar EndNote (RIS)
Título : Trans regulation in the Ultrabithorax gene of Drosophila: alterations in the promoter enhance transvection
Autor : Martínez-Laborda, Antonio; González-Reyes, Acaimo ; Morata, Ginés
Palabras clave : Homeosis
Transvection
Ubx
Fecha de publicación : oct-1992
Editor: John Wiley & Sons
Citación : EMBO J. 1992 October; 11(10): 3645–3652.
http://www.pubmedcentral.nih.gov/articlerender.fcgi?tool=pmcentrez&artid=556824
Resumen: We report a genetic and molecular study of UbxMX6 and Ubx195rx1, two mutations in the Ultrabithorax (Ubx) locus which appear to have a strong effect on the activity of the homologous Ubx gene. These mutations show the characteristic embryonic and adult phenotypes of Ubx null alleles, and also fail to produce any detectable Ubx product. Yet, genetic and phenotypic analyses involving a large number of trans heterozygous combinations of UbxMX6 and Ubx195rx1 with different classes of Ubx mutations, indicate that they hyperactivate the homologous gene. This effect is induced on wildtype or mutant forms of Ubx, provided that the pairing in the bithorax region is normal, i.e. these mutations have a strong positive effect on transvection. We also show that, unlike all the other known cases of transvection in Ubx, this is not zeste-dependent. Southern analyses indicate that UbxMX6 is a 3.4 kb deletion, and Ubx195rx1 is an approximately 11 kb insertion of foreign DNA, both in the promoter region. We speculate that the region altered in the mutations may have a wildtype function to ensure cis-autonomy of the regulation of Ubx transcription.
Descripción : PMCID: PMC556824
URI : http://hdl.handle.net/10261/4050
ISSN: 0261-4189
Aparece en las colecciones: (CABD) Artículos
(CBM) Artículos
Ficheros en este ítem:
Fichero Descripción Tamaño Formato  
Morata_EMBO.pdfMain text2,36 MBAdobe PDFVista previa
Visualizar/Abrir
image_3647.jpgImage on p. 364732,45 kBJPEGVista previa
Visualizar/Abrir
image_3648.jpgImage on p. 364859,73 kBJPEGVista previa
Visualizar/Abrir
image_3650.jpgImage on p. 365034,27 kBJPEGVista previa
Visualizar/Abrir
Mostrar el registro completo
 


NOTA: Los ítems de Digital.CSIC están protegidos por copyright, con todos los derechos reservados, a menos que se indique lo contrario.