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FIGURE: 1 / 2
Please note: We are reviewing Western blot images included in the antibody testing data in our catalog, including those provided by third parties. Unless expressly labeled or annotated as “raw-unedited”, Western blot images included in the antibody testing data in our catalog may have been edited, optimized or otherwise adjusted for presentation.
This gene encodes the acidic form of complement factor 4, part of the classical activation pathway. The protein is expressed as a single chain precursor which is proteolytically cleaved into a trimer of alpha, beta, and gamma chains prior to secretion. The trimer provides a surface for interaction between the antigen-antibody complex and other complement components. The alpha chain may be cleaved to release C4 anaphylatoxin, a mediator of local inflammation. Deficiency of this protein is associated with systemic lupus erythematosus and type I diabetes mellitus. This gene localizes to the major histocompatibility complex (MHC) class III region on chromosome 6. Varying haplotypes of this gene cluster exist, such that individuals may have 1, 2, or 3 copies of this gene.
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Protein Aliases: Acidic complement C4; Basic complement C4; C3 and PZP-like alpha-2-macroglobulin domain-containing protein 2; C3 and PZP-like alpha-2-macroglobulin domain-containing protein 3; c4 complement; Complement C4-A; Complement C4-B; DADB-112B14.11; DAMC-258G8.6; FLJ60561; MGC164979
Gene Aliases: C4A; C4B; C4B_2; CO4; CPAMD2; CPAMD3
Entrez Gene ID: (Human) 720, (Human) 721, (Human) 100293534
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