• Complement C1r
  Complement C1r

  A 80-kDa subcomponent of complement C1, existing as a SERINE PROTEASE proenzyme in the intact complement C1 complex. When COMPLEMENT C1Q is bound to antibodies, the changed te...<br/>Year introduced: 2006 (1990)
  MeSH
• Complement C4
  Complement C4

  A glycoprotein that is important in the activation of CLASSICAL COMPLEMENT PATHWAY. C4 is cleaved by the activated COMPLEMENT C1S into COMPLEMENT C4A and COMPLEMENT C4B....<br/>Year introduced: 2006 (1975)
  MeSH
• Complement C3a
  Complement C3a

  The smaller fragment generated from the cleavage of complement C3 by C3 CONVERTASE. C3a, a 77-amino acid peptide, is a mediator of local inflammatory process. It induces smoot...<br/>Year introduced: 2006 (1990)
  MeSH
• Complement C4b
  Complement C4b

  The large fragment formed when COMPLEMENT C4 is cleaved by COMPLEMENT C1S. The membrane-bound C4b binds COMPLEMENT C2A, a SERINE PROTEASE, to form C4b2a (CLASSICAL PATHWAY C3 ...<br/>Year introduced: 2006 (1990)
  MeSH
• Complement C1q
  Complement C1q

  A subcomponent of complement C1, composed of six copies of three polypeptide chains (A, B, and C), each encoded by a separate gene (C1QA; C1QB; C1QC). This complex is arranged...<br/>Year introduced: 2006 (1990)
  MeSH

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