==== 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 RIBOSOME 19-JAN-00 1DV4 . COMPND 2 MOLECULE: 16S RIBOSOMAL RNA; . SOURCE 2 ORGANISM_SCIENTIFIC: THERMUS THERMOPHILUS; . AUTHOR A.TOCILJ,F.SCHLUNZEN,D.JANELL,M.GLUHMANN,H.HANSEN,J.HARMS, .