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Anabaena sp. RAYTs. Amino acid sequence (A) and nucleotide flanking regions (B) of IS(alr1015) and related ISs. Amino acid residues marked with an asterisk (*) are within the catalytic region of the protein, residues marked with a vertical line (|) below the sequence are conserved in tyrosine transposases called RAYTs, and residues marked with black triangles are conserved both in RAYTs and in IS200 transposases (22). In panel B, IRs are underlined. //, the end of commonality.
