Ref: AP10660C – Clone: Polyclonal – Host: Rabbit – Method: P,F – Format: Concentrated

SKU: AP10660C Category: Tag:


This polyclonal antibody identify the secreted protein complement component 4d (C4d). The complement 1 complex cleaves complement 4 (C4) to form C4b and C4a. C4b levels are strictly regulated. Single site cleavage of the C4b’s alpha chain by Factor I forms iC4b and blocks C3 convertase, inhibiting opsonisation and activation of the classical pathway. This requires C4 binding protein or CR1 as a cofactor. iC4b is further degraded into C4d and C4c. C4d’s short half-life means that C4d is present in serum at high enough concentrations to make it a useful marker for classical complement activation. C4 has been linked to susceptibility to systemic lupus erythematosous.

Isotype: IgG
Immunogen: N/A.
Staining pattern: Cytoplasmatic.
Positive control: Tissue sample from kidney or tonsil.

This antibody is designed for the specific localization of human C4d using IHC techniques in formalin-fixed, paraffin-embedded tissue sections.