Fig. 1. XSEB4R is an RRM-type protein. Alignment of XSEB4R (Accession Number AY289193) with its homologues in mouse (mSEB4, Accession Number NP062420), human (hSEB4B, Accession Number CAA53064) and C. elegans (C. e-X, Accession Number T33034), and with the Xenopus muscle specific XSEB4 protein (Accession Number AF223427). Dashes represent identical amino acids; dots represent gaps. The RNA recognition motif (RRM) is shaded in grey and the characteristic RNP consensus motifs (RNP1 and RNP2) are boxed. Two additional conserved domains (CD1 and CD2) are indicated. Sequence comparison is indicated as percentage (%) of amino acid similarity.