Cleaved-C1S (R437) Antibody

Code CSB-PA000017
Size US$100
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  • Western Blot analysis of HeLa cells using Cleaved-C1s HC (R437) Polyclonal Antibody
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Product Details

Uniprot No.
Target Names
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
Raised in
Species Reactivity
Synthesized peptide derived from the Internal region of Human C1s HC.
Immunogen Species
Homo sapiens (Human)
Purification Method
The antibody was affinity-purified from rabbit antiserum by affinity-chromatography using epitope-specific immunogen.
It differs from different batches. Please contact us to confirm it.
Liquid in PBS containing 50% glycerol, 0.5% BSA and 0.02% sodium azide.
Tested Applications
Recommended Dilution
Application Recommended Dilution
WB 1:500-1:2000
ELISA 1:20000
Troubleshooting and FAQs
Upon receipt, store at -20°C or -80°C. Avoid repeated freeze.
Lead Time
Basically, we can dispatch the products out in 1-3 working days after receiving your orders. Delivery time maybe differs from different purchasing way or location, please kindly consult your local distributors for specific delivery time.

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Target Background

C1s B chain is a serine protease that combines with C1q and C1r 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.
Gene References into Functions
  1. TNT003, an inhibitor of the serine protease C1s, prevents complement activation induced by cold agglutinins. PMID: 24695853
  2. Data indicate that complement C1s mRNA level was low in ICR-derived glomerulonephritis (ICGN) mice liver as compared with age-matched ICR mice. PMID: 23989031
  3. A molecular switch governs the interaction between the human complement protease C1s and its substrate, complement C4. PMID: 23592783
  4. Four positively charged amino acids on the serine protease domain appear to form a catalytic exosite that is required for efficient cleavage of C4 in the classical pathway of complement. PMID: 22855709
  5. Detailed mapping of post-translational modifications and insights into the C1r/C1s binding sites. PMID: 20008834
  6. Interaction with the prime side residues at the cleavage point in C1s enhances the affinity of the enzyme for complement 2 and complement 4 substrates; these prime subsite residues mediate positive cooperativity in the cleavage of the substrate. PMID: 14674770
  7. full specificity of the enzyme using a randomized phage display library PMID: 16169853
  8. There are splice variants of C1s mRNA transcripts in normal human cells PMID: 18062908

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Involvement in disease
Complement component C1s deficiency (C1SD); Ehlers-Danlos syndrome, periodontal type, 2 (EDSPD2)
Protein Families
Peptidase S1 family
Database Links

HGNC: 1247

OMIM: 120580

KEGG: hsa:716

STRING: 9606.ENSP00000328173

UniGene: Hs.458355

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