==== 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 27-JUN-07 2QFG . COMPND 2 MOLECULE: COMPLEMENT FACTOR H; . SOURCE 2 ORGANISM_SCIENTIFIC: HOMO SAPIENS; . AUTHOR A.I.OKEMEFUNA,H.E.GILBERT,K.M.GRIGGS,R.J.ORMSBY,D.L.GORDON, .