Secondary structure-stretched forms of long intron RNA products from the view point of initiation of chromosome homologs somatic pairing.

In different types of chromosome pairing (meiotic, somatic, and sister chromatids pairing) initiation stages are less elucidated. In somatic homolog pairing initiation, the long intron RNA products interference may play the essential role. The strongest somatic pairing in Drosophila melanogaster 28B1-B2 locus and its enrichment by long bi-directional transcripts prone us to analyze the pre-mRNA secondary structures.