Additional file 4.

Amino acid alignment of the Tra2 protein in the analysed species. The different protein domains are indicated as follows: RS-rich regions in grey background, RNA recognition motif (RRM) in green background, and linker region in yellow background. The RNP-1 and RNP-2 elements are indicated in open black boxes.

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Sarno et al. BMC Evolutionary Biology 2010 10:140   doi:10.1186/1471-2148-10-140