==== Secondary Structure Definition by the program DSSP, updated CMBI version by ElmK / April 1,2000 ==== DATE=6-DEC-2009 . REFERENCE W. KABSCH AND C.SANDER, BIOPOLYMERS 22 (1983) 2577-2637 . HEADER LYASE 21-AUG-78 1KGA . COMPND 2 MOLECULE: 2-KETO-3-DEOXY-6-PHOSPHOGLUCONATE ALDOLASE; . SOURCE 2 ORGANISM_SCIENTIFIC: PSEUDOMONAS PUTIDA; . AUTHOR A.TULINSKY .