• Product nameAnti-C1s antibody
    See all C1s primary antibodies
  • Description
    Rabbit polyclonal to C1s
  • Tested applicationsSuitable for: WBmore details
  • Species reactivity
    Reacts with: Human
    Predicted to work with: Mouse
  • Immunogen

    Synthetic peptide conjugated to KLH derived from within residues 650 to the C-terminus of Human C1s.

    (Peptide available as ab88235.)

  • Positive control
    • This antibody gave a positive signal in Human Plasma Total Protein.


  • FormLiquid
  • Storage instructionsShipped at 4°C. Store at +4°C short term (1-2 weeks). Upon delivery aliquot. Store at -20°C or -80°C. Avoid freeze / thaw cycle.
  • Storage bufferPreservative: 0.02% Sodium Azide
    Constituents: 1% BSA, PBS, pH 7.4
  • Concentration information loading...
  • PurityImmunogen affinity purified
  • ClonalityPolyclonal
  • IsotypeIgG
  • Research areas


Our Abpromise guarantee covers the use of ab87986 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 a concentration of 1 µg/ml. Detects a band of approximately 90 kDa (predicted molecular weight: 76 kDa).


  • FunctionC1s B chain is a serine protease that combines with C1q and C1s to form C1, the first component of the classical pathway of the complement system. C1r activates C1s so that it can, in turn, activate C2 and C4.
  • Involvement in diseaseDefects in C1S are the cause of complement component C1s deficiency (C1SD) [MIM:613783]. A rare defect resulting in C1 deficiency and impaired activation of the complement classical pathway. C1 deficiency generally leads to severe immune complex disease with features of systemic lupus erythematosus and glomerulonephritis.
  • Sequence similaritiesBelongs to the peptidase S1 family.
    Contains 2 CUB domains.
    Contains 1 EGF-like domain.
    Contains 1 peptidase S1 domain.
    Contains 2 Sushi (CCP/SCR) domains.
  • Post-translational
    The iron and 2-oxoglutarate dependent 3-hydroxylation of aspartate and asparagine is (R) stereospecific within EGF domains.
  • Information by UniProt
  • Database links
  • Alternative names
    • Basic proline rich peptide IB 1 antibody
    • C1 esterase antibody
    • C1S antibody
    • C1S_HUMAN antibody
    • Complement C1s subcomponent antibody
    • Complement C1s subcomponent heavy chain antibody
    • Complement C1s subcomponent light chain antibody
    • Complement component 1 s subcomponent antibody
    • Complement component 1 subcomponent s antibody
    • FLJ44757 antibody
    see all

Anti-C1s antibody images

  • Anti-C1s antibody (ab87986) at 1 µg/ml + Human Plasma Total Protein Lysate at 10 µg

    Goat polyclonal to Rabbit IgG - H&L - Pre-Adsorbed (HRP) at 1/3000 dilution
    Developed using the ECL technique

    Performed under reducing conditions.

    Predicted band size : 76 kDa
    Observed band size : 88 kDa (why is the actual band size different from the predicted?)

    Exposure time : 3 minutes

References for Anti-C1s antibody (ab87986)

This product has been referenced in:
  • Shi J  et al. TNT003, an inhibitor of the serine protease C1s, prevents complement activation induced by cold agglutinins. Blood 123:4015-22 (2014). Read more (PubMed: 24695853) »

See 1 Publication for this product

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