title: History of the discovery of a master locus producing piRNAs: the flamenco/COM locus in Drosophila melanogaster.
abstract: The discovery of transposable elements (TEs) in the 1950s by B. McClintock implied the existence of cellular regulatory systems controlling TE activity. The discovery of flamenco (flam) an heterochromatic locus from Drosophila melanogaster and its ability to survey several TEs such as gypsy, ZAM, and Idefix contributed to peer deeply into the mechanisms of the genetic and epigenetic regulation of TEs. flam was the first cluster producing small RNAs to be discovered long before RNAi pathways were identified in 1998. As a result of the detailed genetic analyses performed by certain laboratories and of the sophisticated genetic tools they developed, this locus has played a major role in our understanding of piRNA mediated TE repression in animals. Here we review the first discovery of this locus and retrace decades of studies that led to our current understanding of the relationship between genomes and their TE targets.
authors.affiliation: Laboratoire GReD, Faculté de Médecine, Clermont Université - Université d'Auvergne, Clermont-Ferrand France ; INSERM, U 1103, Clermont-Ferrand France ; CNRS, UMR 6293, Clermont-Ferrand France.
authors.forename: Coline
authors.initials: C
authors.lastname: Goriaux
authors.affiliation: Laboratoire GReD, Faculté de Médecine, Clermont Université - Université d'Auvergne, Clermont-Ferrand France ; INSERM, U 1103, Clermont-Ferrand France ; CNRS, UMR 6293, Clermont-Ferrand France.
authors.forename: Emmanuelle
authors.initials: E
authors.lastname: Théron
authors.affiliation: Laboratoire GReD, Faculté de Médecine, Clermont Université - Université d'Auvergne, Clermont-Ferrand France ; INSERM, U 1103, Clermont-Ferrand France ; CNRS, UMR 6293, Clermont-Ferrand France.
authors.forename: Emilie
authors.initials: E
authors.lastname: Brasset
authors.affiliation: Laboratoire GReD, Faculté de Médecine, Clermont Université - Université d'Auvergne, Clermont-Ferrand France ; INSERM, U 1103, Clermont-Ferrand France ; CNRS, UMR 6293, Clermont-Ferrand France.
authors.forename: Chantal
authors.initials: C
authors.lastname: Vaury
keywords: COM; Drosophila melanogaster; flamenco; piRNA cluster; transposable elements; β-heterochromatin