Figure 1

MicroRNA cluster in the Dlk1/Gtl2 region of human and mouse. Maternal expression of the transcripts is indicated in light magenta (Gene-trap locus 2 (Gtl2)/Maternally Expressed Gene 3 (MEG3), anti-Retrotransposon-like 1 (anti-Rtl1), RNA imprinted and accumulated in nucleus (Rian)/Maternally Expressed Gene 8 (MEG8), microRNA containing gene (Mirg)) and paternal expression in light blue (Delta-like homolog 1 (Dlk1), Retrotransposon-like 1 (Rtl1), iodothyronine deiodinase 3 (Dio3)). The figure designates by color the microRNAs (all maternally expressed) based on miRBase families with more than one member in mouse and human. Hairpin identifiers marked in red were not available in miRBase version 8.0 and were excluded from the target prediction analysis. The gene length and distances are not depicted to scale.