1G44 | A:66-125; A:127-184; B:127-184; C:127-185; C:1-65; B:1-65; A:1-65; C:187-230; B:66-125; C:66-125; A:185-243; B:185-232 | CRYSTAL STRUCTURE OF A COMPLEMENT CONTROL PROTEIN THAT REGULATES BOTH PATHWAYS OF COMPLEMENT ACTIVATION AND BINDS HEPARAN SULFATE PROTEOGLYCANS |