Principle of the Assay: This ELISA kit uses Sandwich-ELISA as the method. The micro ELISA plate provided in this kit has been pre-coated with an antibody specific to CTSD. Standards or samples are added to the appropriate micro ELISA plate wells and combined with the specific antibody. Then a biotinylated detection antibody specific for CTSD and Avidin-Horseradish Peroxidase (HRP) conjugate is 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 CTSD, biotinylated detection antibody and Avidin-HRP conjugate will appear blue in color. The enzyme-substrate reaction is terminated by the addition of a sulphuric acid solution and the color turns yellow. The optical density (OD) is measured spectrophotometrically at a wavelength of 450 nm +/- 2 nm. The OD value is proportional to the concentration of CTSD. You can calculate the concentration of CTSD in the samples by comparing the OD of the samples to the standard curve.
NCBI and Uniprot Product Information
NCBI Description
This gene encodes a lysosomal aspartyl protease composed of a dimer of disulfide-linked heavy and light chains, both produced from a single protein precursor. This proteinase, which is a member of the peptidase C1 family, has a specificity similar to but narrower than that of pepsin A. Transcription of this gene is initiated from several sites, including one which is a start site for an estrogen-regulated transcript. Mutations in this gene are involved in the pathogenesis of several diseases, including breast cancer and possibly Alzheimer disease. [provided by RefSeq, Jul 2008]
Uniprot Description
CTSD: Acid protease active in intracellular protein breakdown. Involved in the pathogenesis of several diseases such as breast cancer and possibly Alzheimer disease. Consists of a light chain and a heavy chain. Belongs to the peptidase A1 family.
Protein type: Motility/polarity/chemotaxis; Autophagy; EC 3.4.23.5; Protease
Chromosomal Location of Human Ortholog: 11p15.5
Cellular Component: extracellular matrix; extracellular space; lysosomal lumen; lysosome; extracellular region; melanosome
Molecular Function: protein binding; aspartic-type endopeptidase activity
Biological Process: collagen catabolic process; extracellular matrix disassembly; extracellular matrix organization and biogenesis; antigen processing and presentation of exogenous peptide antigen via MHC class II; proteolysis
Disease: Ceroid Lipofuscinosis, Neuronal, 10
Research Articles on CTSD
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Product Notes
The Guinea Pig CTSD ctsd (Catalog #AAA2512974) is an ELISA Kit and is intended for research purposes only. The product is available for immediate purchase. The AAA2512974 ELISA Kit recognizes Guinea Pig CTSD. It is sometimes possible for the material contained within the vial of "CTSD, ELISA Kit" to become dispersed throughout the inside of the vial, particularly around the seal of said vial, during shipment and storage. We always suggest centrifuging these vials to consolidate all of the liquid away from the lid and to the bottom of the vial prior to opening. Please be advised that certain products may require dry ice for shipping and that, if this is the case, an additional dry ice fee may also be required.Precautions
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