Recombinant Mouse Complement Component C1ra Protein(Cat#: CTP-022)
This product is a recombinant mouse Complement Component C1ra protein with a N-terminal tag or C-terminal tag expressed in the E. coli, yeast, insect, or mammalian cell. It is available for WB, ELISA.
Summary
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Specifications
| Expressed Host |
E. Coli, yeast, insect, or mammalian cell |
| Specie Reactivity |
Mouse |
| Target |
C1RA |
| Purity |
>85% as determined by SDS-PAGE |
| Endotoxin |
<1.0EU per 1µg (determined by the LAL method) |
| Formulation |
Tris-based buffer, 50% glycerol |
| Applications |
WB; ELISA |
| Product Form |
Liquid/Lyophilized |
| Storage |
Store working aliquots at 4°C for up to one week. The shelf life of liquid form is 6 months at -20C/-80°C. The shelf life of lyophilized form is 12 months at -20C/-80°C. Avoid repeated freezing and thawing. |
Protein Information
| Introduction |
C1ra (complement component 1 subcomponent r-A) is an 85-95 kDa member of the peptidase S1 family of enzymes. It is secreted primarily by hepatocytes but is also known to be expressed by monocytes, fibroblasts, keratinocytes and endothelial cells. C1r forms a key component of the complement 1 complex. Complement is a general name for a group of molecules that "complement" the antimicrobial effort associated with antibodies and phagocytic cells. The C1 complex is composed of five proteins; one C1q that binds immunoglobulin, and two copies of two inactive serine proteases termed C1r and C1s. Activation of the C1 complex is the first step in a proteolytic cascade that generates multiple modulators involved in cell lysis and phagocytosis. Following C1q binding, each 85-90 kDa C1r monomer undergoes autocleavage to generate a 60 kDa and 28-34 kDa disulfide‑linked enzymatically-active heterodimer. Each C1r heterodimer now acts on a C1s counterpart to create a globally-active complex that drives the complement cascade. In contrast to human, the mouse genes for C1r and C1s have undergone duplication. The major, or liver derived, C1r is termed C1ra, while a prostate-associated C1r is called C1rB. Mouse C1ra proenzyme is 691 amino acids (aa) in length (aa 17-707). It contains one CUB domain (aa 17-140), an EGF-like motif (aa 141-189), a second CUB domain (aa 192-303), two SUSHI (or CCP) repeats (aa 306-448), and a C-terminal peptidase S1 region (aa 463-704). Autocleavage occurs between Arg462:Ile463, generating a 60 kDa N-terminal subunit that is disulfide‑linked to a 30 kDa enzymatic subunit. Over aa 17-707, mouse C1ra shares 91% and 82% aa sequence identity with rat and human C1r, respectively. Full-length mouse C1ra shares 96% aa sequence identity with mouse C1rB, with virtually all differences arising in the enzymatic, or small subunit. |
| Alternative Names |
C1r; mC1rA; AI132558; Complement component 1, r subcomponent A |
| Gene ID |
50909 |
| UniProt ID |
Q8CG16 |
Customer Review
Invaluable for our research on complement pathways
Excellent
We used it successfully in both WB and ELISA assays. The protein was highly pure, and the results were consistent across multiple experiments. The price is reasonable for the quality, and the data reproducibility has been excellent. A solid choice for complement research.
Overall, a reliable product
Excellent
It performs exceptionally well in our ELISA assays, showing strong and specific binding. The protein quality is high, and it's consistently reproducible. The only downside is the need for careful handling and storage to maintain stability.
This C1ra protein exceeded our expectations in Western Blot assays
Excellent
The band intensity was just right, and the specificity was impressive. We did face some initial challenges with protein degradation, but with proper storage and handling, we've had excellent results. It's a great tool for complement studies.
A dependable product
Excellent
The protein showed high purity and strong performance in ELISA, with a clear and consistent signal.
If you're working on complement proteins, this is a good investment
Excellent
The protein has been a great addition to our lab. It works well in our WB assays, showing clear bands without excessive background noise.
For Research Use Only. Not for Diagnostic or Therapeutic Applications.
