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[bAla8]-Neurokinin A(4-10)

NK2 agonist CAS# 122063-01-8

[bAla8]-Neurokinin A(4-10)

Catalog No. BCC7137----Order now to get a substantial discount!

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Chemical structure

[bAla8]-Neurokinin A(4-10)

3D structure

Chemical Properties of [bAla8]-Neurokinin A(4-10)

Cas No. 122063-01-8 SDF Download SDF
PubChem ID 123943 Appearance Powder
Formula C35H56N8O10S M.Wt 780.93
Type of Compound N/A Storage Desiccate at -20°C
Synonyms MEN 10210
Solubility Soluble to 1 mg/ml in 5% NH4OH / water
Sequence DSFVALM

(Modifications: Ala-5 = β-Ala, Met-7 = C-terminal amide)

Chemical Name (3S)-3-amino-4-[[(2S)-1-[[1-[[(2S)-1-[[3-[[1-[[(2S)-1-amino-4-methylsulfanyl-1-oxobutan-2-yl]amino]-4-methyl-1-oxopentan-2-yl]amino]-3-oxopropyl]amino]-3-methyl-1-oxobutan-2-yl]amino]-1-oxo-3-phenylpropan-2-yl]amino]-3-hydroxy-1-oxopropan-2-yl]amino]-4-oxobutanoic acid
SMILES CC(C)CC(C(=O)NC(CCSC)C(=O)N)NC(=O)CCNC(=O)C(C(C)C)NC(=O)C(CC1=CC=CC=C1)NC(=O)C(CO)NC(=O)C(CC(=O)O)N
Standard InChIKey CKNPSJOMUQBPLA-FMGAJUQSSA-N
Standard InChI InChI=1S/C35H56N8O10S/c1-19(2)15-24(32(50)40-23(30(37)48)12-14-54-5)39-27(45)11-13-38-35(53)29(20(3)4)43-33(51)25(16-21-9-7-6-8-10-21)41-34(52)26(18-44)42-31(49)22(36)17-28(46)47/h6-10,19-20,22-26,29,44H,11-18,36H2,1-5H3,(H2,37,48)(H,38,53)(H,39,45)(H,40,50)(H,41,52)(H,42,49)(H,43,51)(H,46,47)/t22-,23-,24?,25?,26-,29-/m0/s1
General tips For obtaining a higher solubility , please warm the tube at 37 ℃ and shake it in the ultrasonic bath for a while.Stock solution can be stored below -20℃ for several months.
We recommend that you prepare and use the solution on the same day. However, if the test schedule requires, the stock solutions can be prepared in advance, and the stock solution must be sealed and stored below -20℃. In general, the stock solution can be kept for several months.
Before use, we recommend that you leave the vial at room temperature for at least an hour before opening it.
About Packaging 1. The packaging of the product may be reversed during transportation, cause the high purity compounds to adhere to the neck or cap of the vial.Take the vail out of its packaging and shake gently until the compounds fall to the bottom of the vial.
2. For liquid products, please centrifuge at 500xg to gather the liquid to the bottom of the vial.
3. Try to avoid loss or contamination during the experiment.
Shipping Condition Packaging according to customer requirements(5mg, 10mg, 20mg and more). Ship via FedEx, DHL, UPS, EMS or other couriers with RT, or blue ice upon request.

Biological Activity of [bAla8]-Neurokinin A(4-10)

DescriptionNK2 receptor agonist (pD2 = 6.91). Produces bladder contraction and bronchospasm in guinea pigs in vivo.

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References on [bAla8]-Neurokinin A(4-10)

Tachykinin NK(2) receptors and enhancement of cholinergic transmission in the inflamed rat colon: an in vivo motility study.[Pubmed:11487522]

Br J Pharmacol. 2001 Aug;133(7):1107-13.

In the gastrointestinal tract, tachykinin NK(2) receptors are localized both on smooth muscle and nerve fibres. NK(2) receptor antagonists reduce exaggerated intestinal motility in various diarrhoea models but the site of action contributing to this effect is unknown. In this study we investigated the effects of atropine (1.4 micromol kg(-1), i.v.), hexamethonium (13.5 micromol kg(-1), i.v.), and nepadutant (0.1 micromol kg(-1), i.v.), a selective tachykinin NK(2) receptor antagonist, on distension (0.5 and 1 ml)-, or irritation (acetic acid, 0.5 ml of 7.5% v v(-1))-induced motility in the rat distal colon in vivo. The effects of atropine, hexamethonium or N(omega)-nitro-L-argininemethylester (L-NAME, 1.85 micromol kg(-1), i.v.) on [betaAla(8)]NKA(4-10) (10 nmol kg(-1), i.v.)-induced colonic contractions were also investigated. When the colonic balloon was filled with a subthreshold volume (0.5 ml), the intraluminal instillation of acetic acid triggered a high-amplitude phasic colonic motility which was partially reduced by nepadutant and suppressed by either hexamethonium or atropine. Filling of the balloon with 1 ml evoked reflex (hexamethonium-sensitive), atropine-sensitive phasic colonic motility: nepadutant had no significant effect on the distension-evoked motility. Neither hexamethonium nor atropine significantly reduced [betaAla(8)]NKA(4-10)-induced colonic contractions, whereas nepadutant suppressed them. Following L-NAME pretreatment, [betaAla(8)]NKA(4-10)-induced colonic contractions were inhibited by both atropine and hexamethonium. In hexamethonium-pretreated animals, an atropine-sensitive component of [betaAla(8)]NKA(4-10)-induced colonic contractions was also evident. These results indicate that the application of irritants onto the colonic mucosa induces the release of endogenous tachykinins which enhance excitatory cholinergic mechanisms through the stimulation of NK(2) receptors.

In vivo pharmacology of [beta Ala8]neurokinin A-(4-10), a selective NK-2 tachykinin receptor agonist.[Pubmed:2160369]

Eur J Pharmacol. 1990 Feb 20;177(1-2):81-6.

We studied the effect of [beta Ala8]neurokinin A-(4-10), a newly developed selective NK-2 tachykinin receptor agonist, on various parameters in anaesthetized rats (blood pressure, urinary bladder motility, plasma extravasation) and guinea-pigs (salivation, increase of pulmonary insufflation pressure) as compared to the response produced by tachykinins. [beta Ala8]Neurokinin A-(4-10) was as active as, or more active than, neurokinin A (NKA) or NKA-(4-10) in producing rat bladder contraction or bronchospasm in guinea-pigs, two effects known to involve activation of NK-2 receptors. On the other hand, the synthetic peptide was weakly active, if active at all, in producing hypotension or plasma extravasation in the rat bladder as well as salivation in guinea-pigs, effects known to involve activation of NK-1 receptors. These findings provide evidence that [beta Ala8]NKA-(4-10) acts as a selective NK-2 agonist in vivo and that it can be used to explore the distribution and function of NK-2 receptors.

A potent and selective agonist for NK-2 tachykinin receptor.[Pubmed:2550911]

Peptides. 1989 May-Jun;10(3):593-5.

Replacement of the glycine in position 8 of the C-terminal heptapeptide NKA(4-10) with beta-alanine give rise to a potent and selective agonist for the NK-2 tachykinin receptor. The affinity of [beta-Ala8]-NKA(4-10) to the NK-2 receptor is enhanced by almost one order of magnitude as compared to NKA(4-10), while affinity decreases at about the same extent at NK-1 and NK-3 receptors, respectively. Synthesis and biological activities of a series of NKA(4-10) analogues systematically replaced in each position with beta-alanine are also reported.

Description

[bAla8]-Neurokinin A(4-10) is a neurokinin 2 (NK2) receptor agonist.

Keywords:

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