==== Secondary Structure Definition by the program DSSP, updated CMBI version by ElmK / April 1,2000 ==== DATE=12-DEC-2009 . REFERENCE W. KABSCH AND C.SANDER, BIOPOLYMERS 22 (1983) 2577-2637 . HEADER RIBOSOME 16-APR-04 1T1M . COMPND 2 MOLECULE: DODECAMER FRAGMENT OF DOUBLE HELIX FROM 23S RRNA; . SOURCE 2 ORGANISM_SCIENTIFIC: ESCHERICHIA COLI; . AUTHOR R.K.AGRAWAL,M.R.SHARMA,M.C.KIEL,G.HIROKAWA,T.M.BOOTH, .