neurokinin receptors

gamma-preprotachykinin amide (72-92) acetate is a 21 amino acid peptide belonging to the tachykinin (TK) family and including neurokinin A (NKA) in its C-terminal sequence. gamma-preprotachykinin amide (72-92) acetate possesses higher affinity than NKA for central NK-2 receptors; it shows lower affinity for NK-1 receptors, however, it potently stimulates salivary secretion, which is mediated by NK-1 receptor activation.

Hemokinin 1, human TFA acts as a selective full agonist at the tachykinin neurokinin 1 (NK1) receptor, while also being a full agonist at NK2 and NK3 receptors. It is capable of inducing opioid-independent analgesia [1] [2].

[D-Trp2,7,9] Substance P is a tachykinin (Neurokinin Receptor) antagonist with inhibitory affinities (K_i values) of 1 μM for NK-1, 1.3 μM for NK-2, and approximately 9 μM for NK-3 receptors [1].

Substance P(1-4) acts as a potent antagonist of neurokinin receptors (NK-R) and regulates normal hematopoiesis, additionally inhibiting the formation of endogenous erythroid colonies (EEC) [1].

Neurokinin B TFA, a member of the tachykinin family, binds to a series of GPCRs, including neurokinin receptors 1 (NK1R), NK2R, and NK3R, to modulate their biological effects.

Scyliorhinin I is an agonist for both neurokinin-1 (NK-1) and neurokinin-2 (NK-2) receptors, exhibiting a Ki value of 0.9 nM at rat submandibular gland NK-1 receptors and 2 nM at hamster bladder NK-2 receptors. Additionally, it possesses the capability to contract the longitudinal muscle of the guinea pig ileum.