Substance P

Neuropeptide in human, associated with pain

Substance P (SP) is a neuropeptide, belonging to the tachykinin family of neuropeptides that 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.

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Substance P

Neuropeptide in human, associated with pain

Substance P (SP) is a neuropeptide, belonging to the tachykinin family of neuropeptides that 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.

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From Wikipedia

Substance P (SP) is a neuropeptide, belonging to the tachykinin family of neuropeptides that 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. It is an undecapeptide (a peptide composed of a chain of 11 amino acid residues) and has the following sequence: Arg Pro Lys Pro Gln Gln Phe Phe Gly Leu Met (RPKPQQFFGLM) 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.

Text: Wikipédia, CC BY-SA 4.0. · Image: Fvasconcellos (Public domain) ·

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