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complement C4d
Fragment of C4b that remains associated with membrane after cleavage by Factor I.
Laboratory:
- complement C4d in erythrocytes
- complement C4d in serum/plasma
- C4d Ag in tissue
General
complement-4 (C4)
Properties
SIZE: MW = 193 kD
entity length = 1744 aa
COMPARTMENT: plasma
MOTIF: N-glycosylation site {N226}
cysteine residue {C702}
MODIFICATION: cysteine residue {C728}
cysteine residue {C703}
MODIFICATION: cysteine residue {C735}
cysteine residue {C716}
MODIFICATION: cysteine residue {C736}
cysteine residue {C728}
MODIFICATION: cysteine residue {C702}
cysteine residue {C735}
MODIFICATION: cysteine residue {C703}
cysteine residue {C736}
MODIFICATION: cysteine residue {C716}
N-glycosylation site {N862}
N-glycosylation site {N1328}
N-glycosylation site {N1391}
sulfotyrosine site {Y1417}
MODIFICATION: sulfate
sulfotyrosine site {Y1420}
MODIFICATION: sulfate
sulfotyrosine site {Y1422}
MODIFICATION: sulfate
References
Clinical Diagnosis and Management by Laboratory Methods,
18th ed, J.B. Henry (ed), W.B. Saunders, Philadelphia,
PA, 1991 pg 835
Component-of
complement complex