==== Secondary Structure Definition by the program DSSP, updated CMBI version by ElmK / April 1,2000 ==== DATE=1-JAN-2010 . REFERENCE W. KABSCH AND C.SANDER, BIOPOLYMERS 22 (1983) 2577-2637 . HEADER SIGNAL PROTEIN 13-JUL-94 2IRT . COMPND 2 MOLECULE: INTERLEUKIN-1 RECEPTOR ANTAGONIST; . SOURCE 2 ORGANISM_SCIENTIFIC: HOMO SAPIENS; . AUTHOR B.C.FINZEL,L.L.CLANCY,H.M.EINSPAHR .