==== Secondary Structure Definition by the program DSSP, updated CMBI version by ElmK / April 1,2000 ==== DATE=24-NOV-2009 . REFERENCE W. KABSCH AND C.SANDER, BIOPOLYMERS 22 (1983) 2577-2637 . HEADER OXIDOREDUCTASE 05-MAR-97 1AE4 . COMPND 2 MOLECULE: ALDEHYDE REDUCTASE; . SOURCE 2 ORGANISM_SCIENTIFIC: SUS SCROFA; . AUTHOR O.EL-KABBANI .