Substance P
| tachykinin, precursor 1 | |||||||
|---|---|---|---|---|---|---|---|
| Spacefilling model of substance P | |||||||
| Identifiers | |||||||
| Symbol | TAC1 | ||||||
| Alt. symbols | TAC2, NKNA | ||||||
| NCBI gene | 6863 | ||||||
| HGNC | 11517 | ||||||
| OMIM | 162320 | ||||||
| RefSeq | NM_003182 | ||||||
| UniProt | P20366 | ||||||
| Other data | |||||||
| Locus | Chr. 7 q21-q22 | ||||||
| 
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| Identifiers | |
|---|---|
| ChEBI | |
| ChEMBL | |
| ChemSpider | |
| ECHA InfoCard | 100.046.845 | 
| MeSH | Substance+P | 
| PubChem CID | |
| UNII | |
| 
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| Properties | |
| C63H98N18O13S | |
| Molar mass | 1347.63 g/mol | 
| Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references | |
Substance P (SP) is an undecapeptide (a peptide composed of a chain of 11 amino acid residues) and a type of neuropeptide, belonging to the tachykinin family of neuropeptides. It acts as a neurotransmitter and a neuromodulator. Substance P and the closely related neurokinin A (NKA) are produced from a polyprotein precursor after alternative splicing of the preprotachykinin A gene. The deduced amino acid sequence of substance P is as follows:
with an amide group at the C-terminus. Substance P is released from the terminals of specific sensory nerves. It is found in the brain and spinal cord and is associated with inflammatory processes and pain.