GPR14^[1]

Human Urotensin II (U-II) binds to recombinant human GPR14 with high affinity, and the binding is functionally coupled to calcium mobilization. Human Urotensin II induces concentration-dependent increases in intracellular calcium in a HEK-293 cell line expressing human GPR14 (EC₅₀=0:62±0.17 nM, n=6)^[1] .

MCE has not independently confirmed the accuracy of these methods. They are for reference only.

Human Urotensin II (U-II) markedly increases total peripheral resistance in anaesthetized non-human primates, a response associated with profound cardiac contractile dysfunction^[1] .

MCE has not independently confirmed the accuracy of these methods. They are for reference only.

1502.59

C??H??F?N??O??S?

Glu-Thr-Pro-Asp-Cys-Phe-Trp-Lys-Tyr-Cys-Val (Disulfide bridge: Cys5-Cys7)

ETPDCFWKYCV (Disulfide bridge: Cys5-Cys7)

Room temperature in continental US; may vary elsewhere.

Powder-80°C2 years-20°C1 yearIn solvent-80°C6 months-20°C1 month

In Vitro: 

H₂O

Peptide Solubility and Storage Guidelines:

1.  Calculate the length of the peptide.

2.  Calculate the overall charge of the entire peptide according to the following table:

 ContentsAssign valueAcidic amino acidAsp (D), Glu (E), and the C-terminal -COOH.-1Basic amino acidArg (R), Lys (K), His (H), and the N-terminal -NH2+1Neutral amino acidGly (G), Ala (A), Leu (L), Ile (I), Val (V), Cys (C), Met (M), Thr (T), Ser (S), Phe (F), Tyr (Y), Trp (W), Pro (P), Asn (N), Gln (Q)0

3.  Recommended solution:

Overall charge of peptideDetailsNegative (<0)1.  Try to dissolve the peptide in water first.2.  If water fails, add NH4OH (<50 μL).3.  If the peptide still does not dissolve, add DMSO (50-100 μL) to solubilize the peptide.Positive (>0)1.  Try to dissolve the peptide in water first.2.  If water fails, try dissolving the peptide in a 10%-30% acetic acid solution.3.  If the peptide still does not dissolve, try dissolving the peptide in a small amount of DMSO.Zero (=0)1.  Try to dissolve the peptide in organic solvent (acetonitrile, methanol, etc.) first.2.  For very hydrophobic peptides, try dissolving the peptide in a small amount of DMSO, and then dilute the solution with water to the desired concentration.

• [1]. Ames RS, et al. Human urotensin-II is a potent vasoconstrictor and agonist for the orphan receptor GPR14. Nature. 1999 Sep 16;401(6750):282-6.