CFB（complement factor B） encodes complement factor B, a component of the alternative pathway of complement activation. Factor B circulates in the blood as a single chain polypeptide. Upon activation of the alternative pathway, it is cleaved by complement factor D yielding the noncatalytic chain Ba and the catalytic subunit Bb. The active subunit Bb is a serine protease which associates with C3b to form the alternative pathway C3 convertase. Bb is involved in the proliferation of preactivated B lymphocytes, while Ba inhibits their proliferation. CFB localizes to the major histocompatibility complex (MHC) class III region on chromosome 6. This cluster includes several genes involved in regulation of the immune reaction. Polymorphisms in CFB are associated with a reduced risk of age-related macular degeneration. The polyadenylation site of CFB is 421 bp from the 5' end of the gene for complement component 2. 蛋白别名为：CFB; BF; BFD; Complement factor B; C3/C5 convertase; Glycine-rich beta glycoprotein; GBG; PBF2; Properdin factor B;基因ID为：629；蛋白质ID:P00751
应用类型
WB，ELISA补充：最优的抗体稀释比例需要基于客户实验进行优化.建议的起始稀释比例如下: WB: 1:500-1:2000, ELISA: 1:20000. Not yet tested in other applications.
免疫原
合成多肽：the Internal region of human Factor B Bb. at AA rangle: 210-290
