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Neuropeptide S

Protein-coding gene in the species Homo sapiens


Protein-coding gene in the species Homo sapiens

Neuropeptide S (NPS) is a neuropeptide found in human and mammalian brain, mainly produced by neurons in the amygdala and between Barrington's nucleus and the locus coeruleus, although NPS-responsive neurons extend projections into many other brain areas. NPS binds specifically to a G protein-coupled receptor, NPSR. Animal studies show that NPS suppresses anxiety and appetite, induces wakefulness and hyperactivity, and plays a significant role in the extinction of conditioned fear. It has also been shown to significantly enhance dopamine activity in the mesolimbic pathway, and inhibits motility and increases permeability in neurocrine fashion acting through NO in the myenteric plexus in rats and humans.

Synthetic ligands

The non-peptide NPS receptor antagonist SHA-68 blocks the effects of NPS in animals and is anxiogenic. Several peptide derived NPS agonists and antagonists have also been developed.

Peptide sequence

Below are the sequences of mature neuropeptide S in several representative species in which it is expressed:

Symbol = Neuropeptide_SName = Neuropeptide Simage =width =caption =Pfam = PF14993Pfam_clan =InterPro =IPR028138SMART =PROSITE =MEROPS =SCOP =TCDB =OPM family =OPM protein =CAZy =CDD =
speciessequenceMW
human`SFRNGVGTGMKKTSFQRAKS`2187.5
rat`SFRNGVGSGVKKTSFRRAKQ`2210.5
mouse`SFRNGVGSGAKKTSFRRAKQ`2182.5
dog, chimp`SFRNGVGTGMKKTSFRRAKS`2215.6
chicken`SFRNGVGSGIKKTSFRRAKS`2183.5
consensus`SFRNGVGxGXKKTSFxRAKx`N/A

According to Pfam's HMM logo, there is a conserved "KR" cleave site immediately N-terminal to the C-terminal mature peptide.

References

References

  1. (Jan 2007). "Distribution of neuropeptide S receptor mRNA and neurochemical characteristics of neuropeptide S-expressing neurons in the rat brain". The Journal of Comparative Neurology.
  2. (Jul 2008). "Neuropeptide S-mediated control of fear expression and extinction: role of intercalated GABAergic neurons in the amygdala". Neuron.
  3. (2008). "Identification of a neuropeptide S responsive circuitry shaping amygdala activity via the endopiriform nucleus". PLOS ONE.
  4. (Dec 2005). "Neuropeptide S and its receptor: a newly deorphanized G protein-coupled receptor system". The Neuroscientist.
  5. (2008). "Orphan G Protein-Coupled Receptors and Novel Neuropeptides".
  6. (January 2020). "Neuropeptide S promotes wakefulness through the inhibition of sleep-promoting ventrolateral preoptic nucleus neurons". Sleep.
  7. (Aug 2004). "Neuropeptide S: a neuropeptide promoting arousal and anxiolytic-like effects". Neuron.
  8. (Nov 2005). "Neuropeptide S as a novel arousal promoting peptide transmitter". The FEBS Journal.
  9. (Aug 2007). "Neuropeptide S: a novel modulator of stress and arousal". Stress.
  10. (May 2008). "Pharmacology of neuropeptide S in mice: therapeutic relevance to anxiety disorders". Psychopharmacology.
  11. (May 2008). "Neuropeptide S is a stimulatory anxiolytic agent: a behavioural study in mice". British Journal of Pharmacology.
  12. (Dec 2008). "Anxiolytic-like effect of neuropeptide S in the rat defensive burying". Peptides.
  13. (May 2010). "Microinjection of neuropeptide S into the rat ventral tegmental area induces hyperactivity and increases extracellular levels of dopamine metabolites in the nucleus accumbens shell". Peptides.
  14. (Oct 2015). "Neuropeptide S inhibits gastrointestinal motility and increases mucosal permeability through nitric oxide". Am J Physiol Gastrointest Liver Physiol.
  15. (Jun 2008). "Synthesis and pharmacological in vitro and in vivo profile of 3-oxo-1,1-diphenyl-tetrahydro-oxazolo[3,4-a]pyrazine-7-carboxylic acid 4-fluoro-benzylamide (SHA 68), a selective antagonist of the neuropeptide S receptor". The Journal of Pharmacology and Experimental Therapeutics.
  16. (Jul 2006). "Structure-activity studies on neuropeptide S: identification of the amino acid residues crucial for receptor activation". The Journal of Biological Chemistry.
  17. (Feb 2008). "Synthesis and biological activity of human neuropeptide S analogues modified in position 2". Journal of Medicinal Chemistry.
  18. (Oct 2008). "Structure-activity study at positions 3 and 4 of human neuropeptide S". Bioorganic & Medicinal Chemistry.
  19. (Jan 2009). "Synthesis and biological activity of human neuropeptide S analogues modified in position 5: identification of potent and pure neuropeptide S receptor antagonists". Journal of Medicinal Chemistry.
  20. (Feb 2009). "In vitro and in vivo pharmacological characterization of the neuropeptide s receptor antagonist [D-Cys(tBu)5]neuropeptide S". The Journal of Pharmacology and Experimental Therapeutics.
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