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Silencers in abdominal-B, a homeotic Drosophila gene.
Busturia A, Bienz M. Busturia A, et al. EMBO J. 1993 Apr;12(4):1415-25. EMBO J. 1993. PMID: 8096812 Free PMC article.
One of the Abd-B fragments, called IAB5, mediates a beta-gal pattern restricted along the body axis to the Abd-B expression domain. ...IAB5 and two other fragments called MCP and FAB show region-specific silencing activity: they suppress at a distance beta-gal expre …
One of the Abd-B fragments, called IAB5, mediates a beta-gal pattern restricted along the body axis to the Abd-B expression domain. . …
Drosophila melanogaster dHCF interacts with both PcG and TrxG epigenetic regulators.
Rodriguez-Jato S, Busturia A, Herr W. Rodriguez-Jato S, et al. Among authors: busturia a. PLoS One. 2011;6(12):e27479. doi: 10.1371/journal.pone.0027479. Epub 2011 Dec 8. PLoS One. 2011. PMID: 22174740 Free PMC article.
Functional characterization of the dRYBP gene in Drosophila.
González I, Aparicio R, Busturia A. González I, et al. Genetics. 2008 Jul;179(3):1373-88. doi: 10.1534/genetics.107.082966. Epub 2008 Jun 18. Genetics. 2008. PMID: 18562658 Free PMC article.
The Drosophila dRYBP gene has been described to function as a Polycomb-dependent transcriptional repressor. To determine the in vivo function of the dRYBP gene, we have generated mutations and analyzed the associated phenotypes. Homozygous null mutants die progressively th …
The Drosophila dRYBP gene has been described to function as a Polycomb-dependent transcriptional repressor. To determine the in vivo …
The Drosophila RYBP gene functions as a Polycomb-dependent transcriptional repressor.
Bejarano F, González I, Vidal M, Busturia A. Bejarano F, et al. Mech Dev. 2005 Oct;122(10):1118-29. doi: 10.1016/j.mod.2005.06.001. Mech Dev. 2005. PMID: 16125914
The Polycomb and trithorax groups of genes control the maintenance of homeotic gene expression in a variety of organisms. A putative participant in the regulation of this process is the murine RYBP (Ring and YY1 Binding Protein) gene. ...To study the transcriptional …
The Polycomb and trithorax groups of genes control the maintenance of homeotic gene expression in a variety of organisms. A pu …
Function of the Trithorax-like gene during Drosophila development.
Bejarano F, Busturia A. Bejarano F, et al. Dev Biol. 2004 Apr 15;268(2):327-41. doi: 10.1016/j.ydbio.2004.01.006. Dev Biol. 2004. PMID: 15063171
To explain Trithorax-like gene function, we propose a model where very early in development, GAGA factor probably establishes a chromatin ground state for transcription. ...We also suggest that GAGA factor may not have a dual activator/repressor function. Rat …
To explain Trithorax-like gene function, we propose a model where very early in development, GAGA factor probably establishes a
Genetic and molecular characterization of a novel iab-8 regulatory domain in the Abdominal-B gene of Drosophila melanogaster.
Estrada B, Casares F, Busturia A, Sánchez-Herrero E. Estrada B, et al. Development. 2002 Nov;129(22):5195-204. Development. 2002. PMID: 12399311
We have analyzed the expression and mutant phenotype of a P-lacZ element inserted close to the Abdominal-B m origin of transcription and of derivatives of this transposon. Some of these derivatives represent a particular class of mutations in the bithorax complex, b …
We have analyzed the expression and mutant phenotype of a P-lacZ element inserted close to the Abdominal-B m origin of transcription …
A silencer is required for maintenance of transcriptional repression throughout Drosophila development.
Busturia A, Wightman CD, Sakonju S. Busturia A, et al. Development. 1997 Nov;124(21):4343-50. Development. 1997. PMID: 9334282
By studying the expression of reporter genes, we have identified a 725 bp fragment, called MCP725, in the homeotic gene Abdominal-B, that accurately maintains position-specific silencing during proliferation of imaginal cells. ...They also suggest that propagation of the s …
By studying the expression of reporter genes, we have identified a 725 bp fragment, called MCP725, in the homeotic gene Abdominal-B, …
Regulation of cell number in Drosophila.
Busturia A, Lawrence PA. Busturia A, et al. Nature. 1994 Aug 18;370(6490):561-3. doi: 10.1038/370561a0. Nature. 1994. PMID: 7914352
In most insects, growth of the epidermis is so controlled that, at each moult, there is a precise and proportionate increase in cell number. ...Here we used embryos with a reduced number of cells in the abdominal primordia to determine whether they can regulate towa …
In most insects, growth of the epidermis is so controlled that, at each moult, there is a precise and proportionate increase in cell …
Double and triple mutant combinations of bithorax complex of Drosophila.
Casanova J, Sánchez-Herrero E, Busturia A, Morata G. Casanova J, et al. EMBO J. 1987 Oct;6(10):3103-9. EMBO J. 1987. PMID: 14650432 Free PMC article.
Embryos hemizygous for the triple combination exhibit a metameric pattern consisting of parasegments 5-12 being transformed into parasegment 4. ...The abd-A Abd-B combination exhibits the same phenotype of DpP10 DfP9, lacking all the abdominal functions except those …
Embryos hemizygous for the triple combination exhibit a metameric pattern consisting of parasegments 5-12 being transformed into para …
The MCP silencer of the Drosophila Abd-B gene requires both Pleiohomeotic and GAGA factor for the maintenance of repression.
Busturia A, Lloyd A, Bejarano F, Zavortink M, Xin H, Sakonju S. Busturia A, et al. Development. 2001 Jun;128(11):2163-73. Development. 2001. PMID: 11493537
Using deletion analysis and reporter gene assays, we defined a 138 bp sequence within the MCP silencer that is sufficient for silencing of a reporter gene in the imaginal discs. ...We present a model in which robust silencing is achieved by sequential and fac …
Using deletion analysis and reporter gene assays, we defined a 138 bp sequence within the MCP silencer that is sufficient for silenci …
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