Neuromedin S

Also known as NMS

Neuromedin S is a neuropeptide structurally related to NMU, primarily studied for its potent influence on circadian rhythms and energy metabolism.

Length: 36 amino acids (human)
Half-life: Not well characterised
Mechanism: Acts as an endogenous agonist for Neuromedin U receptors, NMUR1 and NMUR2, but with different distribution and potency.
Studied in: Research focuses on its role in regulating circadian rhythms via the suprachiasmatic nucleus, as well as its effects on feeding behaviour and hormone release.

About Neuromedin S

Neuromedin S (NMS) is a neuropeptide that was identified based on its structural similarity to Neuromedin U (NMU). It is primarily expressed within the brain, with the highest concentration found in the suprachiasmatic nucleus (SCN), the body's master circadian clock. This distinct localisation suggests a primary role in the regulation of daily physiological rhythms.

In laboratory research, NMS is used to investigate the neural circuits controlling circadian behaviour and energy balance. It acts as a ligand for the same receptors as NMU (NMUR1 and NMUR2) but shows different binding affinities and functional potencies. Its administration in animal models has been shown to powerfully influence locomotor activity, sleep-wake cycles, and feeding patterns.

Laboratory notes

Unlike the more widespread NMU, NMS expression is highly restricted, primarily to the SCN in the brain.
When studying its effects, it is crucial to consider the time of day of administration, given its strong link to circadian function.
Store lyophilised peptide at -20°C or colder; reconstitute with sterile water for immediate use or aliquot and freeze at -80°C to prevent degradation.

Storage and reconstitution basics: storage guide.

Questions about Neuromedin S

How was Neuromedin S discovered?

It was identified through database searches for peptides with sequence homology to Neuromedin U.

Where is NMS most abundantly expressed in the brain?

Its expression is most concentrated in the suprachiasmatic nucleus (SCN) of the hypothalamus.

How do the functions of NMS and NMU differ?

While both act on the same receptors and can affect appetite, NMS has a more pronounced and specific role in the regulation of circadian rhythms due to its localised expression in the SCN.

Is Neuromedin S for human use?

No. It is supplied strictly for in-vitro laboratory research and is not for human or animal consumption.

Related research peptides

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