Human Complement Component C1r Antibody Summary
Ser18-Asp705
Accession # NP_001724
Applications
Please Note: Optimal dilutions should be determined by each laboratory for each application. General Protocols are available in the Technical Information section on our website.
Reconstitution Calculator
Preparation and Storage
- 12 months from date of receipt, -20 to -70 °C as supplied.
- 1 month, 2 to 8 °C under sterile conditions after reconstitution.
- 6 months, -20 to -70 °C under sterile conditions after reconstitution.
Background: Complement Component C1r
The classical complement pathway plays a major role in innate immunity against infection. This pathway is triggered by C1, a multimolecular complex composed of the recognition protein C1q and two serine proteases, C1r and C1s. Following the C1q recognition, C1r is autoactivated, and in turn activates C1s, which cleaves C4 and C2, the C1 substrates (1). Both C1r and C1s activation involve cleavage of a specific Arg-Ile bond, converting single-chain proenzymes into active proteases of disulfide bond-linked chains (A and B) (2). The A chains contain multiple domains in the order of CUB1-EGF-CUB2-CCP1-CCP2-Activation Peptide. The B chains contain the serine protease catalytic domain. The full-length (amino acid residues 1‑705) of human C1r was expressed, which had the Leu152 natural variant (3). The purified protein corresponded to the processed active form, with A and B chains starting at residue Ser18 and Ile464, respectively.
- Arlaud, G.J. et al. (2002) Biochem. Soc. Trans. 30:1001.
- Lacroix, M. et al. (2001) J. Biol. Chem. 276:36233.
- Journet A. and M. Tosi (1986) Biochem. J. 240:783.
Product Datasheets
Citations for Human Complement Component C1r Antibody
R&D Systems personnel manually curate a database that contains references using R&D Systems products. The data collected includes not only links to publications in PubMed, but also provides information about sample types, species, and experimental conditions.
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Citations: Showing 1 - 3
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Acquisition of C1 inhibitor by Bordetella pertussis virulence associated gene 8 results in C2 and C4 consumption away from the bacterial surface
Authors: ES Hovingh, B van den Br, B Kuipers, E Pinelli, SHM Rooijakker, I Jongerius
PLoS Pathog., 2017-07-24;13(7):e1006531.
Species: Bacteria - Bordetella pertussis
Sample Types: Cell Lysates
Applications: Western Blot -
Effect of the Anti-C1s Humanized Antibody TNT009 and its Parental Mouse Variant TNT003 on HLA Antibody-induced Complement Activation - A Preclinical in Vitro Study
Authors: M Wahrmann, J Mühlbacher, L Marinova, H Regele, N Huttary, F Eskandary, G Cohen, GF Fischer, GC Parry, JC Gilbert, S Panicker, GA Böhmig
Am. J. Transplant, 2017-03-31;0(0):.
Applications: Flow Cytometry -
EDTA/gelatin zymography method to identify C1s versus activated MMP-9 in plasma and immune complexes of patients with systemic lupus erythematosus
Authors: E Ugarte-Ber, E Martens, L Boon, J Vandooren, D Blockmans, P Proost, G Opdenakker
J. Cell. Mol. Med., 2018-10-24;23(1):576-585.
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