Human Cathepsin B PicoKine® Quick ELISA Kit

Mfr.No.

FEK0670

Sensitivity

<5 pg/ml

Detection Range

156 pg/ml - 10,000 pg/ml

Reactivity

Human

Sample Volume

Concentration (pg/ml)	0	156	312	625	1250	2500	5000	10000
O.D.	0.107	0.243	0.348	0.539	0.894	1.445	2.041	2.443

Description

Human Cathepsin B PicoKine® Quick ELISA Kit (90 minutes, 96 Tests). Quantitate Human CTSB in cell culture supeatants, cell lysates, serum and plasma (heparin, EDTA). Sensitivity: 5pg/ml. The brand Picokine indicates this is a premium quality ELISA kit. Each Picokine kit delivers precise quantification, high sensitivity, and excellent reproducibility. Only our most reliable and effective kits qualify as Picokine, guaranteeing top-tier results for your assays.

Immunogen

Expression system for standard: NS0; Immunogen sequence: R18-I339

Kit Components

Description Quantity Volume
Anti-tag Pre-coated 96-well Strip Microplate 1 12 strips of 8 wells
Standard 2
Antibody A 1 3ml
Antibody B 1 3ml
Sample Diluent 1 15ml
TBS-T Wash Buffer (25x) 1 12ml
Color Developing Reagent (TMB) 1 10ml
Stop Solution 1 10ml
Adhesive Plate Sealers 2 Piece

Cross Reactivity

There is no detectable cross-reactivity with other relevant proteins.

Specificity

Natural and recombinant Human CTSB

Sample Type

Cell culture supeatants, Cell lysates, Serum, Plasma

Anticoagulant

heparin or EDTA

Precision

	Intra-Assay Precision			Inter-Assay Precision
Sample	1	2	3	1	2	3
n	16	16	16	24	24	24
Mean (pg/ml)	242	1834	4362	264	1932	4096
Standard deviation	16.7	126.55	322.79	20.86	142.97	372.74
CV (%)	6.9%	6.9%	7.4%	7.9%	7.4%	9.1%

Background

Cathepsin B is an enzymatic protein belonging to the peptidase or protease families. In humans, it is coded by the CTSB gene.1, 2 And this gene is mapped to chromosome 8p22.3 The protein encoded by this gene is a lysosomal cysteine proteinase composed of a dimer of disulfide-linked heavy and light chains, both produced from a single protein precursor. It is a member of the peptidase C1 family. Cathepsin B was once suspected as a candidate protease participating in the conversion of beta-amyloid precursor protein into the amyloid plaques found in Alzheimer's disease patients. However, this function is now known to be mediated by BACE1 protease. It is now thought that cathepsin B can degrade beta-amyloid precursor protein into harmless fragments. Thus, it is conceivable cathepsin B may play a pivotal role in the natural defense against Alzheimer's disease.4 Overexpression of cathepsin B has been associated with esophageal adenocarcinoma and other tumors. At least five transcript variants encoding the same protein have been found for this gene. The standard product used in this kit is recombinant human Cathepsin B with the molecular mass of 37KDa.

Reproducibility

Lots	Lot 1 (pg/ml)	Lot 2 (pg/ml)	Lot 3 (pg/ml)	Lot 4 (pg/ml)	Mean (pg/ml)	Standard Deviation	CV (%)
Sample 1	242	251	245	277	254	15.99	6.3%
Sample 2	1834	1763	1647	1547	1698	56.03	3.3%
Sample 3	4362	4260	3862	4631	4279	282.4	6.6%

*number of samples for each test n=16.

Notes

Material Required But Not Provided:
Microplate Reader capable of reading absorbance at 450nm.
Automated plate washer
Pipettes and pipette tips capable of precisely dispensing 0.5 µl through 1 ml volumes of aqueous solutions.
Multichannel pipettes are recommended for large amount of samples.
Deionized or distilled water.
500ml graduated cylinders.
Test tubes for dilution.
Horizontal orbital microplate shaker capable of maintaining a speed of 500 rpm, amplitude 3mm.

Gene ID	1508
Gene Name	CST3
UniProt ID	P07858
Protein Name	Cathepsin B

Applications	ELISA
Research Area	Cardiovascular,Caspases,Cell Biology,Cell Type Markers,Neural Stem Cells,Stem Cells,Tags & Cell Markers,Tumor Associated

Storage	Store at 4°C for 6 months. (Ships with gel ice, can store for up to 3 days in room temperature. Refrigerate upon receipt.)

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SKU	Supplier No.	Size	Your price	Quantity
BHE21000262	FEK0670	96 wells/kit	$499		Add to Cart

Human Cathepsin B PicoKine® Quick ELISA Kit

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