Abcam, ab260069, Human PNP ELISA Kit (Purine Nucleoside Phosphorylase)

Size: 1 x 96Tests
Human PNP ELISA Kit (Purine Nucleoside Phosphorylase) is a single-wash 90-min Simplestep used to quantify Human PNP (Purine Nucleoside Phosphorylase) with a sensitivity of 40 pg/ml. The assay uses a simple mix-wash-read protocol with just one incubation and one wash step. - Colorimetric Sandwich ELISA - 450 nm readout : works on any standard plate reader - Design your own immunoassay: we also offer the conjugation-ready antibody pair
Key facts
Detection method:Colorimetric,
Sample types:Heparin Plasma, Citrate plasma, Serum, EDTA Plasma,
Reacts with:Human,
Assay type:Sandwich (quantitative),
Sensitivity:= 40 pg/mL,
Range:78.13 - 5000 pg/mL,
Assay time:1h 30m,
Assay Platform:Pre-coated microplate (12 x 8 well strips)

Product details:
Human PNP ELISA Kit (Purine Nucleoside Phosphorylase) (ab260069) is a single-wash 90 min sandwich ELISA designed for the quantitative measurement of PNP (Purine Nucleoside Phosphorylase) protein in cit plasma, edta plasma, hep plasma, and serum. It uses our proprietary SimpleStep ELISA® technology. Quantitate Human PNP (Purine Nucleoside Phosphorylase) with 40 pg/ml sensitivity.
SimpleStep ELISA® technology employs capture antibodies conjugated to an affinity tag that is recognized by the monoclonal antibody used to coat our SimpleStep ELISA® plates. This approach to sandwich ELISA allows the formation of the antibody-analyte sandwich complex in a single step, significantly reducing assay time. See the SimpleStep ELISA® protocol summary in the image section for further details. Our SimpleStep ELISA® technology provides several benefits:
- Single-wash protocol reduces assay time to 90 minutes or less
- High sensitivity, specificity and reproducibility from superior antibodies
- Fully validated in biological samples
- 96-wells plate breakable into 12 x 8 wells strips
A 384-well SimpleStep ELISA® microplate (
ab203359
) is available to use as an alternative to the 96-well microplate provided with SimpleStep ELISA® kits.
Purine Nucleoside Phosphorylase (PNP) is a catabolic enzyme which breaks down purine residues by releasing the nucleobase and phosphorylating the ribose residue. It is also used to produce nucleotide monobases as a salvage pathway. PNP plays an important role in the maintenance of T-cells. This kit targets the full-length protein.

Properties and Storage Information:
Shipped at conditions-Blue Ice, Appropriate short-term storage conditions-+4°C, Appropriate long-term storage conditions-+4°C, Storage information-+4°C

Supplementary Information:
This supplementary information is collated from multiple sources and compiled automatically.
Nucleoside phosphorylase also known as PNP or purine nucleoside phosphorylase is an enzyme with a vital mechanical role in nucleoside metabolism. The enzyme facilitates the phosphorolytic cleavage of the glycosidic bond in nucleosides producing ribose 1-phosphate and free bases such as guanine and hypoxanthine. This catalytic function plays an important part in nucleotide salvage pathways. PNP has a molecular mass of approximately 32000 Daltons and shows expression predominantly in the lymphoid tissues including the thymus and spleen.
Biological function summary
Nucleoside phosphorylase is important in maintaining nucleotide homeostasis. It operates as a monomer or part of a homotrimeric complex which allows it to efficiently catalyze its reactions in purine metabolism. The absence or dysfunction of PNP results in the accumulation of nucleosides and diminished levels of nucleotide pools which can severely hamper DNA replication and repair.
Pathways
Nucleoside phosphorylase plays an integral role in the purine salvage pathway which is vital for recycling purines to form new nucleotides. It works alongside other enzymes such as adenine phosphoribosyltransferase to conserve energy by recycling purines. This pathway connects closely with the hypoxanthine-guanine phosphoribosyltransferase (HGPRT) pathway showing how PNP is intertwined in broader nucleotide biosynthesis and degradation processes.
Deficiencies in nucleoside phosphorylase correlate strongly with immunodeficiencies notably purine nucleoside phosphorylase deficiency (PNP deficiency) which leads to compromised T-cell immunity. This condition can result in recurrent infections and developmental delay. Additionally the enzyme's dysregulation associates with certain leukemias where altered nucleotide pools contribute to the proliferation of malignant cells. In these contexts PNP interacts with proteins central to these disorders including those involved in purine metabolism placing it at a critical junction for potential therapeutic intervention.