Mouse CTSK (Cathepsin K) CLIA Kit (MOES00159)

(No reviews yet) Write a Review


ELISA Kit Technical ManualMSDS

Mouse CTSK (Cathepsin K) CLIA Kit

This kit uses Sandwich-CLIA as the method. The micro CLIA plate provided in this kit has been pre-coated with an antibody specific to Mouse CTSK . Standards or samples are added to the appropriate micro CLIA plate wells and combined with the specific antibody. Then a biotinylated detection antibody specific for Mouse CTSK and Avidin-Horseradish Peroxidase (HRP) conjugate are added to each micro plate well successively and incubated. Free components are washed away. The substrate solution is added to each well. Only those wells that contain Mouse CTSK, biotinylated detection antibody and Avidin-HRP conjugate will appear fluorescence. The Relative light unit (RLU) value is measured spectrophotometrically by the Chemiluminescence immunoassay analyzer. The RLU value is positively associated with the concentration of Mouse CTSK. The concentration of Mouse CTSK in the samples can be calculated by comparing the RLU of the samples to the standard curve.

Assay typeSandwich
Assay time4.5h
Detection methodChemiluminescence
Detection range7.81-500 pg/mL
Sensitivity4.69 pg/mL
Sample volume100uL
Sample typeSerum, plasma and other biological fluids
RepeatabilityCV < 15%


This kit recognizes Mouse CTSK in samples. No significant cross-reactivity or interference between Mouse CTSK and analogues was observed.

Typical Data

As the RLU values of the standard curve may vary according to the conditions of the actual assay performance (e.g. operator, pipetting technique, washing technique or temperature effects), the operator should establish a standard curve for each test. Typical standard curve and data is provided below for reference only.

RLU Average Corrected


Intra-assay Precision (Precision within an assay): 3 samples with low, mid range and high level Mouse CTSK were tested 20 times on one plate, respectively.

Inter-assay Precision (Precision between assays): 3 samples with low, mid range and high level Mouse CTSK were tested on 3 different plates, 20 replicates in each plate.

  Intra-assay Precision Inter-assay Precision
Mean (pg/mL)25.5865.17199.9525.5668.21212.97
Standard deviation2.276.3514.583.035.1420.36
C V (%)8.879.747.2911.857.549.56


The recovery of Mouse CTSK spiked at three different levels in samples throughout the range of the assay was evaluated in various matrices.

Sample Type Range (%) Average Recovery (%)
Serum (n=5)88-10295
EDTA plasma (n=5)84-9691
Cell culture media (n=5)91-10697


Samples were spiked with high concentrations of Mouse CTSK and diluted with Reference Standard & Sample Diluent to produce samples with values within the range of the assay.

    Serum (n=5) EDTA plasma (n=5) Cell culture media (n=5)
1:2Range (%)94-11083-99103-120
Average (%)10290109
1:4Range (%)102-11796-113103-116
Average (%)107103109
1:8Range (%)95-10699-11393-105
Average (%)10010798
1:16Range (%)90-10188-10094-107
Average (%)9593101

Kit Components & Storage

An unopened kit can be stored at 4'C for 1 month. If the kit is not used within 1 month, store the items separately according to the following conditions once the kit is received.

Item Specifications Storage
Micro CLIA Plate(Dismountable)8 wells X12 strips-20'C, 6 months
Reference Standard2 vials
Concentrated Biotinylated Detection Ab (100X)1 vial, 120 uL
Concentrated HRP Conjugate (100X)1 vial, 120 uL-20'C(shading light), 6 months
Reference Standard & Sample Diluent1 vial, 20 mL4'C, 6 months
Biotinylated Detection Ab Diluent1 vial, 14 mL
HRP Conjugate Diluent1 vial, 14 mL
Concentrated Wash Buffer (25X)1 vial, 30 mL
Substrate Reagent A1 vial, 5 mL4'C (shading light)
Substrate Reagent B1 vial, 5 mL4'C (shading light)
Plate Sealer5 pieces
Product Description1 copy
Certificate of Analysis1 copy

Mouse CTSK (Cathepsin K) CLIA Kit (MOES00159) Assay procedure

    1. Set standard, test sample and control (zero) wells on the pre-coated plate and record theirpositions. It is recommended to measure each standard and sample in duplicate. Note: addall solutions to the bottom of the plate wells while avoiding contact with the well walls. Ensuresolutions do not foam when adding to the wells.
    2. Aliquot 100µl of standard solutions into the standard wells.
    3. Add 100µl of Sample / Standard dilution buffer into the control (zero) well.
    4. Add 100µl of properly diluted sample (serum, plasma, tissue homogenates and otherbiological fluids.) into test sample wells.
    5. Cover the plate with the sealer provided in the kit and incubate for 90 min at 37°C.
    6. Aspirate the liquid from each well, do not wash. Immediately add 100µL of BiotinylatedDetection Ab working solution to each well. Cover the plate with a plate seal and gently mix.Incubate for 1 hour at 37°C.
    7. Aspirate or decant the solution from the plate and add 350µL of wash buffer to each welland incubate for 1-2 minutes at room temperature. Aspirate the solution from each well andclap the plate on absorbent filter paper to dry. Repeat this process 3 times. Note: a microplatewasher can be used in this step and other wash steps.
    8. Add 100µL of HRP Conjugate working solution to each well. Cover with a plate seal andincubate for 30 min at 37°C.
    9. Aspirate or decant the solution from each well. Repeat the wash process for five times asconducted in step 7.
    10. Add 100µL of Substrate mixture solution to each well. Cover with a new plate seal andincubate for no more than 5 min at 37°C. Protect the plate from light.
    11. Determine the RLU value of each well immediately.

Mouse CTSK (Cathepsin K) CLIA Kit (MOES00159) Protein Information

UniProt Protein Function:CTSK: Closely involved in osteoclastic bone resorption and may participate partially in the disorder of bone remodeling. Displays potent endoprotease activity against fibrinogen at acid pH. May play an important role in extracellular matrix degradation. Defects in CTSK are the cause of pycnodysostosis (PKND). PKND is an autosomal recessive osteochondrodysplasia characterized by osteosclerosis and short stature. Belongs to the peptidase C1 family.
UniProt Protein Details:

Protein type:EC; Protease

Chromosomal Location of Human Ortholog: 3 F2.1|3 40.74 cM

Cellular Component: cytoplasm; extracellular space; intracellular membrane-bound organelle; lysosome; nucleoplasm

Molecular Function:collagen binding; cysteine-type endopeptidase activity; fibronectin binding; proteoglycan binding

Biological Process: bone resorption; collagen catabolic process; proteolysis involved in cellular protein catabolic process

NCBI Summary:This gene encodes a member of the cathepsin family of cysteine proteases that is highly expressed in osteoclasts and is involved in the degradation of collagen and other matrix proteins in bone. The encoded preproprotein undergoes proteolytic processing to generate a mature, functional enzyme. Mice lacking the encoded protein exhibit phenotypic features of pycnodysostosis such as increased bone density and bone deformity, which become progressively more pronounced with age. [provided by RefSeq, Jan 2016]
UniProt Code:P55097
NCBI GenInfo Identifier:31982433
NCBI Gene ID:13038
NCBI Accession:NP_031828.2
UniProt Secondary Accession:P55097,O88718,
UniProt Related Accession:P55097
Molecular Weight:
NCBI Full Name:cathepsin K preproprotein
NCBI Synonym Full Names:cathepsin K
NCBI Official Symbol:Ctsk  
NCBI Official Synonym Symbols:catK; Ms10q; MMS10-Q; AI323530  
NCBI Protein Information:cathepsin K
UniProt Protein Name:Cathepsin K
Protein Family:Cathepsin
UniProt Gene Name:Ctsk  
View AllClose

Additional Information

Product type:
View AllClose

0 Reviews

View AllClose