==== Secondary Structure Definition by the program DSSP, updated CMBI version by ElmK / April 1,2000 ==== DATE=4-DEC-2009 . REFERENCE W. KABSCH AND C.SANDER, BIOPOLYMERS 22 (1983) 2577-2637 . HEADER CYTOKINE 09-MAR-94 1ILT . COMPND 2 MOLECULE: INTERLEUKIN-1 RECEPTOR ANTAGONIST; . SOURCE 2 ORGANISM_SCIENTIFIC: HOMO SAPIENS; . AUTHOR B.J.BRANDHUBER,G.P.A.VIGERS .