Additional file 2: Figure S2. of Evolutional dynamics of 45S and 5S ribosomal DNA in ancient allohexaploid Atropa belladonna

Nucleotide sequence comparison of 45S IGS structural region I (SR I) of Atropa belladonna (Abel), Solanum bulbocastanum (Sblb - Komarova et al. 2004) and Nicotiana tomentosiformis (Ntom - Volkov et al. 1999). Pyrimidine-rich motives present at the beginning of SRI in different Solanaceae species are boxed. Presumptive transcription termination signal GAGGTTTTTT at the end of SRI is shown in bold. (PDF 69 kb)