Virginia Bilanchone

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Recent studies have unequivocally identified multipotent stem/progenitor cells in mammary glands, offering a tractable model system to unravel genetic and epigenetic regulation of epithelial stem/progenitor cell development and homeostasis. In this study, we show that Pygo2, a member of an evolutionarily conserved family of plant homeo domain-containing(More)
Transcriptional control plays a key role in regulating epidermal proliferation and differentiation. Although ample information has been obtained on how epidermal homeostasis is controlled in adult skin, less is known about the control of proliferation/differentiation of epidermal stem/progenitor cells in the developing embryo. Ovol1, encoding a zinc finger(More)
Ovol1 belongs to a family of evolutionarily conserved zinc finger proteins that act downstream of key developmental signaling pathways such as Wnt and TGF-beta/BMP. It plays important roles in epithelial and germ cell development, particularly by repressing c-Myc and Id2 genes and modulating the balance between proliferation and differentiation of(More)
The Ty3 retrotransposon assembles into 50-nm virus-like particles that occur in large intracellular clusters in the case of wild-type (wt) Ty3. Within these particles, maturation of the Gag3 and Gag3-Pol3 polyproteins by Ty3 protease produces the structural proteins capsid (CA), spacer, and nucleocapsid. Secondary and tertiary structure predictions showed(More)
Retrotransposition of the budding yeast long terminal repeat retrotransposon Ty3 is activated during mating. In this study, proteins that associate with Ty3 Gag3 capsid protein during virus-like particle (VLP) assembly were identified by mass spectrometry and screened for roles in mating-stimulated retrotransposition. Components of RNA processing bodies(More)
We determined the DNA sequence of seventeen sigma elements and flanking regions in order to investigate the extent of the association between the yeast repetitive element, sigma, and tRNA genes. Fifteen of seventeen sigma elements analyzed begin at position -19 to -16 with respect to the 5' end of a tRNA-coding sequence. This region is close to the(More)
BACKGROUND The yeast retrotransposon Ty3 forms stable virus-like particles. Gag3, the major structural protein, is composed of capsid, spacer and nucleocapsid domains. The capsid domain of Gag3 was previously modeled as a structure similar to retrovirus capsid. FINDINGS Two-hybrid analysis was used to understand the interactions that contribute to(More)
Human class I alcohol dehydrogenase (ADH) genes show developmental and tissue specific differences in expression at the polypeptide level. In these studies ADH expression was investigated at the RNA level. Northern blot analysis of total and poly (A) RNA from adult liver using pADH12 probe demonstrated multiple RNA size classes of 2.6, 2.2, 1.9 and 1.6kb.(More)
Ty3 is a Saccharomyces cereviae LTR retrotransposon. The structure of Ty3 is similar to that of a simple retrovirus. It is 5.4 kb in length and encodes overlapping GAG3 and POL3 reading frames flanked by 340 bp long terminal repeats. Expression of Ty3 results in production of Gag3 and Gag3-Pol3 polyproteins which assemble together with genomic RNA into in(More)
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