C4 Alpha Chain/C4b/C4d Polyclonal antibody

C4 Alpha Chain/C4b/C4d Polyclonal Antibody for IHC, IP, WB, ELISA

Host / Isotype

Rabbit / IgG


human, mouse





Cat no : 22233-1-AP


Acidic complement C4, C4, C4A, C4A2, C4A3, C4A4, C4A6, C4S, CO4, Complement C4 A, CPAMD2, RG

Tested Applications

Positive WB detected inL02 cells, human blood, mouse liver tissue
Positive IP detected inL02 cells
Positive IHC detected inhuman liver tissue
Note: suggested antigen retrieval with TE buffer pH 9.0; (*) Alternatively, antigen retrieval may be performed with citrate buffer pH 6.0

Recommended dilution

Western Blot (WB)WB : 1:4000-1:40000
Immunoprecipitation (IP)IP : 0.5-4.0 ug for 1.0-3.0 mg of total protein lysate
Immunohistochemistry (IHC)IHC : 1:50-1:500
It is recommended that this reagent should be titrated in each testing system to obtain optimal results.
Sample-dependent, check data in validation data gallery

Product Information

22233-1-AP targets C4 Alpha Chain/C4b/C4d in WB, IP, IHC, ELISA applications and shows reactivity with human, mouse samples.

Tested Reactivity human, mouse
Cited Reactivityhuman, mouse
Host / Isotype Rabbit / IgG
Class Polyclonal
Type Antibody
Immunogen C4 Alpha Chain/C4b/C4d fusion protein Ag17583
Full Name complement component 4A (Rodgers blood group)
Calculated molecular weight 1744 aa, 193 kDa
Observed molecular weight 80-95 kDa, 200 kDa
GenBank accession numberBC063289
Gene symbol C4A
Gene ID (NCBI) 720
Conjugate Unconjugated
Form Liquid
Purification Method Antigen affinity purification
Storage Buffer PBS with 0.02% sodium azide and 50% glycerol pH 7.3.
Storage ConditionsStore at -20°C. Stable for one year after shipment. Aliquoting is unnecessary for -20oC storage. 20ul sizes contain 0.1% BSA.

Background Information

Complement C4, a component of the classical complement pathway, has an important role in innate immune function. C4 protein is expressed as a single chain precursor which is proteolytically cleaved into a trimer of alpha, beta, and gamma chains (molecular wights 95, 78, and 31 kDa) prior to secretion. The alpha chain is cleaved to release C4 anaphylatoxin, an antimicrobial peptide and a mediator of local inflammation. This antibody raised against 1017-1336aa of human C4-A protein can recognize C4 precursor, C4 alpha chain, C4b, and C4d.


Product Specific Protocols
WB protocol for C4 Alpha Chain/C4b/C4d antibody 22233-1-APDownload protocol
IHC protocol for C4 Alpha Chain/C4b/C4d antibody 22233-1-APDownload protocol
IP protocol for C4 Alpha Chain/C4b/C4d antibody 22233-1-APDownload protocol
Standard Protocols
Click here to view our Standard Protocols




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