Translated amino acid sequence of Xenopus IRBP. The first 22 amino acid residues (bold) comprise the signal sequence. The four homologous modules of the protein are boxed. The black boxes with white text are glycosylation consensus sequences. The shaded regions are segments of the recombinant protein that were verified by LC-MS/MS. The 3'-UTR contains two polyadenylation signal sequences (boxed and in bold). This cDNA sequence is available through the European Bioinformatics Information, Genbank and DDBJ Nucleotide Sequence databases under accession number X95473 and sequence identification XLIRBP.