Chemicals and Drugs [D] » Amino Acids, Peptides, and Proteins [D12] » Proteins » Blood Proteins » Acute-Phase Proteins » Complement C3
Chemicals and Drugs [D] » Amino Acids, Peptides, and Proteins [D12] » Proteins » Blood Proteins » Immunoproteins » Complement System Proteins » Complement C3
A glycoprotein that is central in both the classical and the alternative pathway of COMPLEMENT ACTIVATION. C3 can be cleaved into COMPLEMENT C3A and COMPLEMENT C3B, spontaneously at low level or by C3 CONVERTASE at high level. The smaller fragment C3a is an ANAPHYLATOXIN and mediator of local inflammatory process. The larger fragment C3b binds with C3 convertase to form C5 convertase. MeSH
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