| Identification | Back Directory | [Name]
SUBSTANCE P | [CAS]
12769-48-1 | [Synonyms]
RPKPQFFGLM
SUBSTANCE P
RPKPQQFFGLM-NH2
SUBSTANCE P AMIDE
SUBSTANCE P (TYR8)
SUBSTANCE P BOVINE
SUBSTANCE P (HUMAN, BOVINE, RAT, MOUSE)
SUBSTANCE P, [D-ARG1, D-PRO2, D-TRP7,9, LEU11]
H2N-ARG-PRO-LYS-PRO-GLN-GLN-PHE-PHE-GLY-LEU-MET
ARG-PRO-LYS-PRO-GLN-GLN-PHE-PHE-GLY-LEU-MET-NH2
H-ARG-PRO-LYS-PRO-GLN-GLN-PHE-PHE-GLY-LEU-MET-NH2 | [Molecular Formula]
C63H98N18O13S | [MDL Number]
MFCD00076780 | [MOL File]
12769-48-1.mol | [Molecular Weight]
1347.63 |
| Hazard Information | Back Directory | [Uses]
Substance P is a neurokinin undecapeptide neurotransmitter and neuromodulator. | [Definition]
ChEBI: Substance P is a neuropeptide consisting of 11-amino acids. It preferentially activates neurokinin-1 receptors, exterting excitatory effects on central and peripheral neurons and involved in pain transmission. It has a role as a neurotransmitter, a vasodilator agent and a neurokinin-1 receptor agonist. It is a conjugate base of a substance P(3+). | [Mechanism of action]
Substance P is an 11-amino-acid neuropeptide belonging to the tachykinin family, mediating its biological
actions through activation of G protein–coupled tachykinin (neurokinin-1 [NK1]) receptors. Its proposed
physiological roles include inflammation, pain, GI and respiratory function, stress responses, and emesis.
Substance P is uniquely associated with the monoamine neurotransmitters, 5-HT and NE. | [Clinical Use]
The 5-HT neurons
coexpress substance P, and the firing of NE neurons is modulated by substance P. Preclinical studies have
supported a role of the substance P–NK1 receptor system in stress-related disorders, which has guided the
antidepressant development of centrally active NK1 receptor antagonists, such as aprepitant. The NK1
antagonists are generally well tolerated and exhibit less nausea and sexual dysfunction than some currently
used antidepressants. |
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