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Complement C2a MeSH Descriptor Data 2024

MeSH Heading
Complement C2a
Tree Number(s)
Unique ID
RDF Unique Identifier
Scope Note
The COOH-terminal fragment of COMPLEMENT 2, released by the action of activated COMPLEMENT C1S. It is a SERINE PROTEASE. C2a combines with COMPLEMENT C4B to form C4b2a (CLASSICAL PATHWAY C3 CONVERTASE) and subsequent C4b2a3b (CLASSICAL PATHWAY C5 CONVERTASE).
Entry Term(s)
C2a Complement
Complement 2a
Complement C2 Fragment a
Complement C2a Fragment
Pharm Action
Immunologic Factors
Registry Number
Public MeSH Note
2006; COMPLEMENT C2A was indexed under COMPLEMENT 2 1986-2005
History Note
2006 (1986)
Date Established
Date of Entry
Complement C2a Preferred
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