Complement factor H-related protein 1 (CFHR1) is a complement regulator which has been reported to regulate complement by blocking C5 convertase activity and interfering with C5b surface association.
*; ArgB108, ArgB109 and AspB201 are common in both planes.Details of amino acids on human C1q holo and apo plane, which involved in C1q-IgG/IgM CRP and C1q-BmCRT complex formation.