==== Secondary Structure Definition by the program DSSP, updated CMBI version by ElmK / April 1,2000 ==== DATE=27-NOV-2009 . REFERENCE W. KABSCH AND C.SANDER, BIOPOLYMERS 22 (1983) 2577-2637 . HEADER ELONGATION FACTOR 29-MAY-87 1EFM . COMPND 2 MOLECULE: ELONGATION FACTOR TU; . SOURCE 2 ORGANISM_SCIENTIFIC: ESCHERICHIA COLI; . AUTHOR F.JURNAK .