Mouse Anti-Human iC3b

Mouse Anti-Human iC3b


Protein Information

Protein Name & Synonyms:
Target Species:
  • Human

Antibody Specifications

IgG concentration 1.0mg/ml


This product recognizes 42kDa human inactive complement component 3b (iC3b) neoantigen present in blood serum. Cleavage of C3b into iC3b by the protease factor I, in the presence of cofactors, changes the structure and resulting binding properties, preventing binding by complement factor B and properdin. This prevents further progression of the complement pathway, providing another mechanism by which the complement pathway may be regulated.

iC3b is thought to play a role in inducing tolerance, binding complement receptor type 3 on antigen presenting cells and stimulating them to produce transforming growth factor beta2 and interleukin-10. It is thought to stimulate B-cells via the CD21 receptor providing a link between the innate and adaptive immune responses. Additionally iC3b acts as an opsonin which is recognized by complement receptor 3 expressed on leukocytes or complement receptor of the immunoglobulin superfamily (CRIg) on Kupffer cells, stimulating phagocytosis of the tagged cells.

iC3b levels are often elevated in diseases such as Systemic Lupus Erythematosis and Rheumatoid arthritis.


Store at +4 °C or at -20 °C if preferred.
Storage in frost-free freezers is not recommended.
This product should be stored undiluted. Avoid repeated freezing and thawing as this may denature the antibody. Should this product contain a precipitate we recommend microcentrifugation before use.
If stored in this manner, this product is stable for 18 months after receipt.


Supplied as:
Purified IgG - liquid
Borate buffered saline
Format Type:


Purified human iC3b
0.09% Sodium Azide (NaN3)


Signal Word
Hazard Statements
H360FD May damage fertility. May damage the unborn child.

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This product is furnished for LABORATORY RESEARCH USE ONLY.
Not for diagnostic or therapeutic use.