Cystatin C is a member of family 2 of the cystatin superfamily. It inhibits many cysteine proteases such as papain and Cathepsins B, H, K, L and S. It is ubiquitous in human tissues and body fluids. A point mutation in the gene coding for the 120 amino acid mature Cystatin C causes a hereditary form of amyloid angiopathy in which the protein variant (Leu 68 to Gln) is deposited in the cerebral arteries, leading to fatal cerebral hemorrhage.
原厂资料:
Product Summary:
The Quantikine Mouse/Rat Cystatin C Immunoassay is a 4.5 hour solid phase ELISA designed to measure mouse and rat Cystatin C in cell culture supernates, cell lysates, serum, plasma, and urine. It contains NS0-expressed recombinant mouse Cystatin C and antibodies raised against the recombinant factor. This immunoassay has been shown to quantitate the recombinant factor accurately. Results obtained using natural mouse or rat Cystatin C showed dose-response curves that were parallel to the standard curves obtained using the recombinant kit standards. These results indicate that this kit can be used to determine relative mass values for natural mouse and rat Cystatin C.
Precision:
Intra-Assay Precision (Precision within an assay)Three samples of known concentration were tested on one plate to assess intra-assay precision.
Inter-Assay Precision (Precision between assays)Three samples of known concentration were tested in separate assays to assess inter-assay precision.
The recovery of Cystatin C spiked into cell culture media was evaluated.
Sample Type
Average % Recovery
Range %
Cell Culture Media (n=4)
107
98-113
Linearity:
To assess the linearity of the assay, samples containing high concentrations of mouse or rat Cystatin C were serially diluted with Calibrator Diluent to produce samples with values within the dynamic range of the assay.