>4yfr_A mol:protein length:137 Cellular retinoic acid-binding protein 2PNFSGNWKIIRSENFEELLKVLGVNVMLRKIAVAAASKYAVEIKQEGDTFYIKVSTTVYTTEINFKVGEEFEEQTVDGRPCKSLVKWESENKMVCEQKLLKGEGPKTSWTKELTNDGELILTMTADDVVCTQVFVRE