Identification of a C3b-specific nanobody that does not bind C3 and blocks alternative pathway convertases
The human complement system is a protein network in blood and other body fluids that fights invading pathogens and is involved in maintaining homeostasis. A central step in the complement cascade is the conversion of complement protein C3 to C3b by convertase enzymes. Upon cleavage of C3, the nascent C3b molecule under...