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[D-Phe12]-Bombesin

[D-Phe12]-Bombesin

Catalog No. BCC5844
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1mg $116.00 Ship Within 7 Days
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Quality Control of [D-Phe12]-Bombesin

Chemical structure

[D-Phe12]-Bombesin

[D-Phe12]-Bombesin Dilution Calculator

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[D-Phe12]-Bombesin Molarity Calculator

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Chemical Properties of [D-Phe12]-Bombesin

Cas No. 108437-87-2 SDF Download SDF
Sequence XQRLGNQWAVGFLM

(Modifications: X = Glp, Phe-12 = D-Phe, Gly-14 = C-terminal amide)

Formula C74H112N22O18S M.Wt 1629.9
Solubility Soluble to 1 mg/ml in water
Storage Desiccate at -20°C
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.
Shipping Condition Packaging according to customer requirements(5mg, 10mg, 20mg and more). Ship via FedEx, DHL, UPS, EMS or other courier with RT , or blue ice upon request.

Preparing Stock Solutions of [D-Phe12]-Bombesin

1 mg 5 mg 10 mg 20 mg 25 mg
1 mM 0.6135 mL 3.0677 mL 6.1353 mL 12.2707 mL 15.3384 mL
5 mM 0.1227 mL 0.6135 mL 1.2271 mL 2.4541 mL 3.0677 mL
10 mM 0.0614 mL 0.3068 mL 0.6135 mL 1.2271 mL 1.5338 mL
50 mM 0.0123 mL 0.0614 mL 0.1227 mL 0.2454 mL 0.3068 mL
100 mM 0.0061 mL 0.0307 mL 0.0614 mL 0.1227 mL 0.1534 mL
* Note: If you are in the process of experiment, it's necessary to make the dilution ratios of the samples. The dilution data above is only for reference. Normally, it's can get a better solubility within lower of Concentrations.

References on [D-Phe12]-Bombesin

Conformation studies on bombesin receptor antagonists: 500 MHz NMR and CD characterization of synthetic (D-Phe12, Leu14)-bombesin.[Pubmed: 2545203]


The conformation flexibility of the tetradecapeptide hormone bombesin and its synthetic antagonist (DPhe12, Leu14)-bombesin has been studied using nuclear magnetic resonance and circular dichroism techniques. The spectral features observed indicate that the ordered structure present in the C-terminal pentapeptide moiety of native BBS is lost in the (DPhe12, Leu14) analog.

(D-Phe12) bombesin and substance P analogues function as central bombesin receptor antagonists.[Pubmed: 2463692]


The potency of synthetic bombesin (BN) analogues with D-Phe12 substitutions and substance P analogues was investigated in the rat CNS. (D-Phe12,Leu14)BN, (D-Phe12)BN and (Tyr4,D-Phe12)BN inhibited binding to rat brain slices with IC50 values of approximately 2 microM. Similarly, spantide inhibited binding to rat brain slices with an IC50 value of 1.5 microM. Spantide inhibited specific (125I-Tyr4)BN binding as a result of decreased rate of association, whereas the rate of dissociation was unaffected. Neither the (D-Phe12)BN analogues nor the substance P analogues inhibited specific binding of 125I-VIP to rat brain slices. Central administration of BN (0.5 micrograms) induced grooming and suppressed feeding and resting. (Tyr4, D-Phe12)BN (5 micrograms) antagonized the behavioral effects of BN. Although spantide (2 micrograms) also antagonized many of the BN effects, it had intrinsic effects and hence the behavioral antagonism was not specific. These data suggest that although both (D-Phe12)BN and substance P analogues may function as central BN receptor antagonists, the (D-Phe12)BN analogues may be functionally the more useful class of antagonists.

[D-Phe12]bombesin analogues: a new class of bombesin receptor antagonists.[Pubmed: 2435173]


Previous attempts to develop analogues of bombesin that function as specific receptor antagonists have been unsuccessful. Alteration of the histidine in luteinizing hormone releasing factor has resulted in analogues that function as competitive antagonists. In the present study we have used a similar strategy and altered the histidine in bombesin. [D-Phe12]bombesin, [D-Phe12,Leu14]bombesin, and [Tyr4,D-Phe12]bombesin did not stimulate amylase release from guinea pig pancreatic acini when present alone, but each analogue inhibited bombesin-stimulated secretion. For each analogue, detectable inhibition occurred at 1 microM and half-maximal inhibition at 4 microM. Each analogue inhibited amylase release by bombesin and other agonists that stimulate secretion by interacting with bombesin receptors. The analogues of bombesin did not alter stimulation by substance P or other agonists that interact with other receptors. The inhibition of the action of bombesin was competitive with Schild plots having slopes of 1.0. Each analogue also inhibited binding of 125I-labeled [Tyr4]bombesin but not 125I-labeled substance P. These results demonstrate that [D-Phe12] analogues of bombesin function as bombesin receptor antagonists and are the only bombesin receptor antagonists that interact only with the bombesin receptor. Because of their specificity, these analogues may prove useful for defining the role of bombesin in various physiological or pathological processes.

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