• Product nameAnti-Factor B antibody [9B6]
    See all Factor B primary antibodies
  • Description
    Mouse monoclonal [9B6] to Factor B
  • Specificityab26040 is specific for the Bb fragment of human factor B. The antibody binding does not abolish the formation of C3bBb complexes. In Western blotting this antibody reacts with the Bb fragment of factor B in nonreduced form only.
  • Tested applicationsSuitable for: WB, ELISAmore details
  • Species reactivity
    Reacts with: Human
  • Immunogen

    Full length protein (Human) -Complement factor B isolated from human plasma.


  • FormLiquid
  • Storage instructionsShipped at 4°C. Upon delivery aliquot and store at -20°C. Avoid freeze / thaw cycles.
  • Storage bufferPreservative: 15mM Sodium Azide
    Constituents: 0.01M Phosphate buffer containing 0.5M Sodium chloride, pH 7.4
  • Concentration information loading...
  • PurityProtein G purified
  • ClonalityMonoclonal
  • Clone number9B6
  • Myelomax63-Ag8.653
  • IsotypeIgG1
  • Light chain typekappa
  • Research areas


Our Abpromise guarantee covers the use of ab26040 in the following tested applications.

The application notes include recommended starting dilutions; optimal dilutions/concentrations should be determined by the end user.

Application Abreviews Notes
WB Use at an assay dependent dilution. Predicted molecular weight: 93 kDa.
ELISA 1/200.


  • FunctionFactor B which is part of the alternate pathway of the complement system is cleaved by factor D into 2 fragments: Ba and Bb. Bb, a serine protease, then combines with complement factor 3b to generate the C3 or C5 convertase. It has also been implicated in proliferation and differentiation of preactivated B-lymphocytes, rapid spreading of peripheral blood monocytes, stimulation of lymphocyte blastogenesis and lysis of erythrocytes. Ba inhibits the proliferation of preactivated B-lymphocytes.
  • Involvement in diseaseDefects in CFB are a cause of susceptibility to hemolytic uremic syndrome atypical type 4 (AHUS4) [MIM:612924]. An atypical form of hemolytic uremic syndrome. It is a complex genetic disease characterized by microangiopathic hemolytic anemia, thrombocytopenia, renal failure and absence of episodes of enterocolitis and diarrhea. In contrast to typical hemolytic uremic syndrome, atypical forms have a poorer prognosis, with higher death rates and frequent progression to end-stage renal disease. Note=Susceptibility to the development of atypical hemolytic uremic syndrome can be conferred by mutations in various components of or regulatory factors in the complement cascade system. Other genes may play a role in modifying the phenotype.
  • Sequence similaritiesBelongs to the peptidase S1 family.
    Contains 1 peptidase S1 domain.
    Contains 3 Sushi (CCP/SCR) domains.
    Contains 1 VWFA domain.
  • Cellular localizationSecreted.
  • Information by UniProt
  • Database links
  • Alternative names
    • AHUS4 antibody
    • B factor properdin antibody
    • BF antibody
    • BFD antibody
    • C3 proaccelerator antibody
    • C3 proactivator antibody
    • C3/C5 convertase antibody
    • CFAB antibody
    • CFAB_HUMAN antibody
    • CFB antibody
    • Complement Factor B antibody
    • Complement factor B Bb fragment antibody
    • FB antibody
    • FBI12 antibody
    • GBG antibody
    • Glycine rich beta glycoprotein antibody
    • Glycine-rich beta glycoprotein antibody
    • H2 Bf antibody
    • H2BF antibody
    • PBF2 antibody
    • Properdin factor B antibody
    see all

References for Anti-Factor B antibody [9B6] (ab26040)

ab26040 has not yet been referenced specifically in any publications.

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