Substance P ELISA Kit is a competitive ELISA designed to quantify Substance P with a sensitivity of 5.3 pg/mL
- Colorimetric competitive ELISA - 450 nm readout - works on any plate reader
- Wide dynamic range - quantifies 9.8 - 10000 pg/ml
View Alternative Names
NKA, NKNA, TAC2, TAC1, Protachykinin-1, PPT
Reactivity data
Product details
Abcam's Substance P in vitro competitive ELISA (Enzyme-Linked Immunosorbent Assay) kit is designed for the accurate quantitative measurement of Substance P in biological fluids.
A goat anti-rabbit IgG antibody has been precoated onto 96-well plates. Standards or test samples are added to the wells, along with an alkaline phosphatase (AP) conjugated-Substance P antigen and a polyclonal rabbit antibody specific to Substance P. After incubation the excess reagents are washed away. pNpp substrate is added and after a short incubation the enzyme reaction is stopped and the yellow color generated is read at 405 nm. The intensity of the yellow coloration is inversely proportional to the amount of Substance P captured in the plate.
Substance P is a undecapeptide that displays a number of biological activities. The peptide was first discovered in 1931 by von Euler and Gaddum. They reported that extracts of equine brain and intestine contained a hypotensive and spasmogenic factor. The preparation, termed preparation P, was later found to be proteinaceous. The isolation and characterization of Substance P was carried out by Leeman's group in 1970. The structure is shown below.
Substance P: H-Arg-Pro-Lys-Pro-Gln-Gln-Phe-Phe-Gly-Leu-Met-NH2
Substance P is synthesized in the ribosomes as a larger protein and then enzymatically converted into the active peptide. The peptide is widely distributed in the peripheral and central nervous systems of vertebrates, where it is thought to act as a neurotransmitter. In the peripheral system, Substance P is localized in the primary sensory neurons and neurons intrinsic to the gastrointestinal tract.
Cross Reactivity
| Compound | % Cross Reactivity |
| Substance P | 100 |
| Substance P (4-11) | >100 |
| Substance P (7-11) | >100 |
| Substance P (3-11) | 66 |
| Physalaemin | 50 |
| Eledoisin | <0.001 |
| α-Neurokinin | <0.001 |
| β-Neurokinin | <0.001 |
| Somatostatin | <0.001 |
| Substance P (1-4) | <0.001 |
Recovery
What's included?
Properties and storage information
Shipped at conditions
Appropriate short-term storage conditions
Appropriate long-term storage conditions
Storage information
Supplementary information
This supplementary information is collated from multiple sources and compiled automatically.
Biological function summary
This peptide acts as a neurotransmitter and neuromodulator in the body. Its functions are significant in the transmission of pain information into the central nervous system where it acts independently rather than being part of a larger protein complex. Additionally Substance P contributes to the regulation of inflammatory processes which impacts immune response. This peptide is not only important for pain perception but also participates in regulating emotional responses and stress.
Pathways
Substance P has a major role in the neurokinin signaling pathway. Within this pathway it interacts with other proteins such as calcitonin gene-related peptide (CGRP) enhancing its function in pain transmission and modulation. Additionally Substance P is part of the MAPK/ERK pathway where it influences cell proliferation and survival although its primary actions focus on signaling through the NK1 receptor.
Product protocols
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Target data
Publications (2)
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Frontiers in molecular neuroscience 18:1583908 PubMed40453756
2025
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International journal of stem cells 16:269-280 PubMed37385635
2023
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