PIC1 PA, a 15 amino-acid peptide, is a potent PIC1 analog that inhibits classical pathway mediated complement activation. PIC1 PA functionally disrupts the C1s-C1r-C1r-C1s/MASPs interaction with collagen-like region (CLR) of C1q / MBL, respectively. PIC1 PA specifically binds to the CLR of C1q and bounds to purified C1q with a mean equilibrium dissociation constant ( KD ) of 33.3 nM [1].
References:
[1]. Sharp JA, et al. Peptide inhibitor of complement c1, a novel suppressor of classical pathway activation: mechanistic studies and clinical potential. Front Immunol. 2014 Aug 22;5:406.
References:
[1]. Sharp JA, et al. Peptide inhibitor of complement c1, a novel suppressor of classical pathway activation: mechanistic studies and clinical potential. Front Immunol. 2014 Aug 22;5:406.