==== Secondary Structure Definition by the program DSSP, updated CMBI version by ElmK / April 1,2000 ==== DATE=14-APR-2010 . REFERENCE W. KABSCH AND C.SANDER, BIOPOLYMERS 22 (1983) 2577-2637 . HEADER IMMUNE SYSTEM 30-JAN-03 1NTJ . COMPND 2 MOLECULE: COMPLEMENT RECEPTOR RELATED PROTEIN; . SOURCE 2 ORGANISM_SCIENTIFIC: RATTUS NORVEGICUS; . AUTHOR M.ASLAM,J.M.GUTHRIDGE,B.K.HACK,R.J.QUIGG,V.M.HOLERS, .