Typical Testing Data/Standard Curve (for reference only)
Purine Nucleoside Phosphorylase Assay Kit | PNP assay kit
Purine Nucleoside Phosphorylase Activity Assay Kit (Colorimetric)
Cell and tissue lysate
Limit of quantification is 0.1 uU recombinant Purine Nucleoside Phosphorylase.
Shelf Life: 12 months
Typical Testing Data/Standard Curve (for reference only)
Typical Testing Data/Standard Curve (for reference only)
Background: Purine Nucleoside Phosphorylase (PNP) (E.C. 2.4.2.1.) is an enzyme involved in purine metabolism and it catalyzes the cleavage of the glycosidic bond of ribo- or deoxyribonucleosides, in the presence of inorganic phosphate as a second substrate, to generate the purine base and ribose-1-phosphate or deoxyribose-1-phosphate. It is one of the enzymes of the nucleotide salvage pathways that allow the cell to produce nucleotide monophosphates when the de novo synthesis pathway has been interrupted or is non-existent (as is the case in the brain). PNP is a cytosolic enzyme. PNP deficiency disease leads to toxic buildup of deoxyguanosine in T-cells leading to T-lymphocytopenia with no apparent effects on B-lymphocyte function. Inhibition of PNP is an important target for chemotherapeutic applications and treatment of T-cell mediated autoimmune diseases. PNP deficiency is also associated with neurological problems. In MyBioSource's Purine Nucleoside Phosphorylase Activity Assay, hypoxanthine formed by the breakdown of inosine is further converted to uric acid using a developer. The uric acid is measured at a wavelength of 293 nm. Limit of quantification is 0.1 uU recombinant Purine Nucleoside Phosphorylase.
Summary: Detection: Absorbance (OD 293 nm)
Application: Detection of Purine Nucleoside Phosphorylase activity in variety of samples
NCBI and Uniprot Product Information
NCBI Description
This gene encodes an enzyme which reversibly catalyzes the phosphorolysis of purine nucleosides. The enzyme is trimeric, containing three identical subunits. Mutations which result in nucleoside phosphorylase deficiency result in defective T-cell (cell-mediated) immunity but can also affect B-cell immunity and antibody responses. Neurologic disorders may also be apparent in patients with immune defects. A known polymorphism at aa position 51 that does not affect enzyme activity has been described. A pseudogene has been identified on chromosome 2. [provided by RefSeq, Jul 2008]
Uniprot Description
NP: a metabolic enzyme with purine-nucleoside phosphorylase activity. Defects are the cause of nucleoside phosphorylase deficiency (NP deficiency), with severe T-cell immunodeficiency with neurologic disorder in children.
Protein type: Nucleotide Metabolism - purine; Cofactor and Vitamin Metabolism - nicotinate and nicotinamide; Transferase; Nucleotide Metabolism - pyrimidine; EC 2.4.2.1
Chromosomal Location of Human Ortholog: 14q13.1
Cellular Component: cytoskeleton; cytoplasm; intracellular; cytosol
Molecular Function: purine binding; nucleoside binding; drug binding; phosphate binding; purine-nucleoside phosphorylase activity
Biological Process: response to drug; inosine catabolic process; nicotinamide riboside catabolic process; nucleobase, nucleoside and nucleotide metabolic process; nucleobase, nucleoside, nucleotide and nucleic acid metabolic process; purine nucleotide catabolic process; immune response; positive regulation of T cell proliferation; purine salvage; positive regulation of alpha-beta T cell differentiation; purine base metabolic process
Disease: Purine Nucleoside Phosphorylase Deficiency
Research Articles on PNP
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Product Notes
The PNP pnp (Catalog #AAA841518) is an Assay Kit and is intended for research purposes only. The product is available for immediate purchase. Detection of Purine Nucleoside Phosphorylase activity in variety of samples. Researchers should empirically determine the suitability of the PNP pnp for an application not listed in the data sheet. Researchers commonly develop new applications and it is an integral, important part of the investigative research process. It is sometimes possible for the material contained within the vial of "Purine Nucleoside Phosphorylase, Assay 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
All products in the AAA Biotech catalog are strictly for research-use only, and are absolutely not suitable for use in any sort of medical, therapeutic, prophylactic, in-vivo, or diagnostic capacity. By purchasing a product from AAA Biotech, you are explicitly certifying that said products will be properly tested and used in line with industry standard. AAA Biotech and its authorized distribution partners reserve the right to refuse to fulfill any order if we have any indication that a purchaser may be intending to use a product outside of our accepted criteria.Disclaimer
Though we do strive to guarantee the information represented in this datasheet, AAA Biotech cannot be held responsible for any oversights or imprecisions. AAA Biotech reserves the right to adjust any aspect of this datasheet at any time and without notice. It is the responsibility of the customer to inform AAA Biotech of any product performance issues observed or experienced within 30 days of receipt of said product. To see additional details on this or any of our other policies, please see our Terms & Conditions page.Item has been added to Shopping Cart
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