Multiple, non-allelic, intein-coding sequences in eukaryotic RNA polymerase genes
Abstract Background Inteins are self-splicing protein elements.They are translated as inserts within host proteins that excise themselves and ligate the flanking portions of the host protein (exteins) with a peptide bond.They are encoded as in-frame insertions within the genes for the host proteins.Inteins are found in all three domains of life and