Human Cathepsin D ELISA Kit PicoKine® (96 Tests). Quantitate Human CTSD in cell culture supeatants, cell lysates, serum and plasma (heparin, EDTA). Sensitivity: 10 pg/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.
Alternative Names
Cathepsin D;3.4.23.5;Cathepsin D light chain;Cathepsin D heavy chain;CTSD;CPSD;
Molecular Weight
44552 MW
Immunogen
Expression system for standard: NS0; Immunogen sequence: L21-L412
There is no detectable cross-reactivity with other relevant proteins.
Specificity
Natural and recombinant human Cathepsin D
Subcellular Localization
Lysosome. Melanosome. Secreted, extracellular space. Identified by mass spectrometry in melanosome fractions from stage I to stage IV. In aortic samples, detected as an extracellular protein loosely bound to the matrix (PubMed:20551380). .
Acid protease active in intracellular protein breakdown. Involved in the pathogenesis of several diseases such as breast cancer and possibly Alzheimer disease.
Background
Cathepsin D is a protein that in humans is encoded by the CTSD gene. This proteinase is a member of the peptidase C1 family, having a specificity similar to but narrower than that of pepsin A. It is mapped to 11p15.5. The cDNA encodes a 412-amino acid protein with 20 and 44 amino acids in a pre- and prosegment, respectively. Cathepsin D is one of the lysosomal proteinases. It is ubiquitously expressed and is involved in proteolytic degradation, cell invasion, and apoptosis. Mutations in this gene are involved in the pathogenesis of several diseases, including breast cancer and possibly Alzheimer disease and it has been considered as a breast cancer tumor marker.
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
189
190
216
201
199
10.88
5.4%
Sample 2
1630
1733
1553
1567
1620
71
4.3%
Sample 3
5138
5161
4737
4988
5006
168.91
3.3%
*number of samples for each test n=16.
Notes
Material Required But Not Provided: Microplate Reader capable of reading absorbance at 450nm. Incubator. 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.
Gene ID
1509
Gene Name
CTSD
UniProt ID
P07339
Protein Name
Cathepsin D
Tissue Specificity
Expressed in the aorta extrcellular space (at protein level). .
Store at 4°C for 6 months, at -20°C for 12 months. Avoid multiple freeze-thaw cycles (Ships with gel ice, can store for up to 3 days in room temperature. Freeze upon receiving.)