==== Secondary Structure Definition by the program DSSP, updated CMBI version by ElmK / April 1,2000 ==== DATE=28-NOV-2009 . REFERENCE W. KABSCH AND C.SANDER, BIOPOLYMERS 22 (1983) 2577-2637 . HEADER LYASE 19-MAY-00 1F1O . COMPND 2 MOLECULE: ADENYLOSUCCINATE LYASE; . SOURCE 2 ORGANISM_SCIENTIFIC: BACILLUS SUBTILIS; . AUTHOR E.A.TOTH,T.YEATES .