This gene encodes the basic 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. 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. In addition, this gene exists as a long form and a short form due to the presence or absence of a 6.4 kb endogenous HERV-K retrovirus in intron 9. [provided by RefSeq, Jul 2008]
| SKU | Test Kits | Buffer | Dye Color | Order Now |
|---|---|---|---|---|
| C4BBA-20-REGO | 20 (40 μL) | 200 μL |
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| C4BBA-20-REGR | 20 (40 μL) | 200 μL |
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| C4BBA-20-ORGR | 20 (40 μL) | 200 μL |
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| C4BBA-20-GOGR | 20 (40 μL) | 200 μL |
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| C4BBA-20-GRRE | 20 (40 μL) | 200 μL |
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| C4BBA-20-GROR | 20 (40 μL) | 200 μL |
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| C4BBA-20-GRGO | 20 (40 μL) | 200 μL |
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| C4BBA-20-AQOR | 20 (40 μL) | 200 μL |
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This gene encodes the basic 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. 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. In addition, this gene exists as a long form and a short form due to the presence or absence of a 6.4 kb endogenous HERV-K retrovirus in intron 9. [provided by RefSeq, Jul 2008]
Gene Symbol : C4B
Gene Name : Complement C4B (Chido blood group)
Chromosome : CHR 6: 320,147,94-320,354,17
Locus : 6p21.33
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