Viral Details

Viral Backbone

Human Adenovirus Type5 (dE1/E3)

Promoter

CMV

Reporter

none, optional GFP, CFP, YFP, RFP or mCherry

Storage Buffer

DMEM, 2% BSA, 2.5% Glycerol

Gene Details

Species

Human

Gene Symbol

C4B

Gene Name

complement C4B (Chido blood group)

Gene ID

721

Gene Synonyms

C4B1; C4B12; C4B2; C4B3; C4B5; C4BD; C4B_2; C4F; CH; CO4; CPAMD3

ORF Size

5235 bp

RefSeq#

BC172377

Gene Description

C4B 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. C4B 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.

UniGene ID

Hs.

HGNC ID

HGNC:1324