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C1-inhibitor (C1-inh, C1 esterase inhibitor) is a protease inhibitor belonging to the serpin superfamily. [5] Its main function is the inhibition of the complement system to prevent spontaneous activation but also as the major regulator of the contact system.
C. C1 complex; C1-inhibitor; C3-convertase; C3a (complement) C3b; C4A; C5-convertase; C8 complex; Cell-bound complement activation products; Classical complement pathway
The complement system, also known as complement cascade, is a part of the humoral, innate immune system and enhances (complements) the ability of antibodies and phagocytic cells to clear microbes and damaged cells from an organism, promote inflammation, and attack the pathogen's cell membrane. [1]
CD46 complement regulatory protein also known as CD46 (cluster of differentiation 46) and Membrane Cofactor Protein is a protein which in humans is encoded by the CD46 gene. [5] CD46 is an inhibitory complement receptor .
CD59 glycoprotein, also known as MAC-inhibitory protein (MAC-IP), membrane inhibitor of reactive lysis (MIRL), or protectin, is a protein that in humans is encoded by the CD59 gene. [5] It is an LU domain and belongs to the LY6/uPAR/alpha-neurotoxin protein family. [6] CD59 attaches to host cells via a glycophosphatidylinositol (GPI) anchor.
Lambris holds patents on complement inhibitors for therapeutic applications. His inventions include the first C3-targeted cyclic peptide inhibitor. This class comprises third and fourth generation compstatin derivatives with enhanced pharmacokinetic profiles and pharmacologic activities (including compounds like AMY-101 and AMY-106).
Complement component 3, often simply called C3, is a protein of the immune system that is found primarily in the blood. It plays a central role in the complement system of vertebrate animals and contributes to innate immunity. In humans it is encoded on chromosome 19 by a gene called C3. [5] [6]
Complement factor I, also known as C3b/C4b inactivator, is a protein that in humans is encoded by the CFI gene. Complement factor I (factor I) is a protein of the complement system , first isolated in 1966 in guinea pig serum , [ 5 ] that regulates complement activation by cleaving cell-bound or fluid phase C3b and C4b. [ 6 ]