Sequence alignment between 2frs(A) and UniProt seq P29373 (RABP2_HUMAN):

P29373 (RABP2_HUMAN): Cellular retinoic acid-binding protein 2 from Homo sapiens
                 10        20        30        40        50        60        70        80        90       100       110       120       130        
         ---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+--------
UniProt: MPNFSGNWKIIRSENFEELLKVLGVNVMLRKIAVAAASKPAVEIKQEGDTFYIKTSTTVRTTEINFKVGEEFEEQTVDGRPCKSLVKWESENKMVCEQKLLKGEGPKTSWTRELTNDGELILTMTADDVVCTRVYVRE
         ...............X.........XXXXXXXXXXXXX....................................................................................................
PDB seq: -PNFSGNWKIIRSENWEELLKVLGV-------------KPAVEIKQEGDTFYIKTSTTVRTTEINFKVGEEFEEQTVDGRPCKSLVKWESENKMVCEQKLLKGEGPKTSWTRELTNDGELILTMTADDVVCTRVYVRE
          ---------+---------+----             --+---------+---------+---------+---------+---------+---------+---------+---------+---------+-------
                  10        20                  40        50        60        70        80        90       100       110       120       130