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Rat Calreticulin ELISA Kit (Colorimetric)

Novus Biologicals, part of Bio-Techne | Catalog # NBP3-06821

Novus Biologicals, part of Bio-Techne
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NBP3-06821

Key Product Details

Sample Type & Volume Required Per Well

Serum, plasma, cell supernatant, and other biological fluids (100 ul)

Sensitivity

37.5 pg/mL

Assay Range

62.5 - 4000 pg/mL

Product Specifications

Assay Type

Sandwich-ELISA

Kit Type

ELISA Kit (Colorimetric)

Reactivity

Rat

Specificity

Rat Calreticulin ELISA Kit (Colorimetric) recognizes Rat Calreticulin in samples. No significant cross-reactivity or interference between Rat Calreticulin and analogues was observed.

Precision

Intra-Assay Precision (Precision within an assay) 4.89

Inter-Assay Precision (Precision between assays) 4.94

Recovery for Rat Calreticulin ELISA Kit (Colorimetric)

Recovery

83 - 106 %

Linearity

Rat Calreticulin ELISA Kit (Colorimetric)

Scientific Data Images for Rat Calreticulin ELISA Kit (Colorimetric)

Rat Calreticulin ELISA Kit (Colorimetric)

ELISA: Rat Calreticulin ELISA Kit (Colorimetric) [NBP3-06821] -

ELISA: Rat Calreticulin ELISA Kit (Colorimetric) [NBP3-06821] - Standard Curve Reference

Kit Contents for Rat Calreticulin ELISA Kit (Colorimetric)

  • Biotinylated Detection Ab Diluent
  • Concentrated Biotinylated Detection Ab (100x)
  • Concentrated HRP Conjugate (100x)
  • Concentrated Wash Buffer (25x)
  • HRP Conjugate Diluent
  • Micro ELISA Plate (Dismountable)
  • Plate Sealer
  • Product Manual
  • Reference Standard
  • Sample Diluent
  • Stop Solution
  • Substrate Reagent

Preparation and Storage

Shipping

The product is shipped with polar packs. Upon receipt, store it immediately at the temperature recommended below.

Stability & Storage

Storage of components varies. See protocol for specific instructions.

Background: Calreticulin

Calreticulin, also called CALR, is an endoplasmic reticulum (ER) protein that functions as a calcium (Ca2+) buffering molecular chaperone (1-3). Together with calnexin and ERp57, calreticulin has a critical role in protein folding and quality control of newly synthesized glycoproteins (1-3). Calreticulin has many diverse functions beyond Ca2+ binding, including cell adhesion, lectin binding, apoptosis, nuclear transport, antigen presentation, and immune response (1-3). Specifically, calreticulin is part of the peptide-loading complex that resides on the ER membrane and is responsible for antigen loading onto MHC class I molecules (1-3). Calreticulin protein has a theoretical molecular weight of 46 kDa and is 417 amino acids (aa) in length (1-3). The protein has three main domains: the N-terminal lectin-like domain, the proline-rich P-domain, and the acidic C-domain which is followed by an ER-retention KDEL signal sequence (1-3).

Given its role in multiple biological processes, it makes sense that calreticulin is implicated in both healthy and disease states. Studies have found that calreticulin mutations were present in patients with myeloproliferative neoplasms (MFN) and essential thrombocythaemia (ET) (4). Calreticulin expression is typically upregulated in most cancer lines, however it is downregulated in some tissues including cervical carcinomas, prostate cancer, and human colon adenocarcinoma (3). High expression of calreticulin on cancer cells is related to tumor cell phagocytosis and is often correlated with, and counteracted by, elevated CD47 expression to prevent cancer cell phagocytosis (3). Calreticulin mutations can serve as a major diagnostic biomarker for MFN and ET and additionally the calreticulin gene may be a potential target for cancer therapeutics (3,4).

References

1. Michalak, M., Groenendyk, J., Szabo, E., Gold, L. I., & Opas, M. (2009). Calreticulin, a multi-process calcium-buffering chaperone of the endoplasmic reticulum. The Biochemical Journal. https://doi.org/10.1042/BJ20081847

2. Fucikova, J., Spisek, R., Kroemer, G., & Galluzzi, L. (2021). Calreticulin and cancer. Cell Research. https://doi.org/10.1038/s41422-020-0383-9

3. Sun, J., Mu, H., Dai, K., & Yi, L. (2017). Calreticulin: a potential anti-cancer therapeutic target. Die Pharmazie. https://doi.org/10.1691/ph.2017.7031

4. Prins, D., Gonzalez Arias, C., Klampfl, T., Grinfeld, J., & Green, A. R. (2020). Mutant Calreticulin in the Myeloproliferative Neoplasms. HemaSphere. https://doi.org/10.1097/HS9.0000000000000333

Alternate Names

Autoantigen Ro, CALR, Calregulin, cC1qR, CRT, SSA, Vasostatin

Gene Symbol

CALR

Additional Calreticulin Products

Product Documents for Rat Calreticulin ELISA Kit (Colorimetric)

Certificate of Analysis

To download a Certificate of Analysis, please enter a lot number in the search box below.

Product Specific Notices for Rat Calreticulin ELISA Kit (Colorimetric)

This product is for research use only and is not approved for use in humans or in clinical diagnosis. ELISA Kits are guaranteed for 6 months from date of receipt.

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