This gene 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. This gene 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 this gene are associated with a reduced risk of age-related macular degeneration. The polyadenylation site of this gene is 421 bp from the 5' end of the gene for complemen
Catalog No
L0234
Reactivity
Human, Mouse
Applications
WB, ELISA
Modification
Cleaved Specific
Source
Polyclonal Rabbit
Dilution
Western Blot: 1/500 - 1/2000. ELISA: 1/20000. Not yet tested in other applications.
Purification
The antibody was affinity-purified from rabbit antiserum by affinity-chromatography using epitope-specific immunogen.
The antiserum was produced against synthesized peptide derived from human CFAB Bb. AA range:241-290
Specificity
Cleaved-Factor B Bb (K260) Polyclonal Antibody detects endogenous levels of fragment of activated Factor B Bb protein resulting from cleavage adjacent to K260.
Formulation
Liquid in PBS containing 50% glycerol, 0.5% BSA and 0.02% sodium azide.
Western blot analysis of lysates from K562 cells, treated with etoposide 25uM 1h, using CFAB Bb (Cleaved-Lys260) Antibody. The lane on the right is blocked with the synthesized peptide.
