Locustatachykinin I TFA
Locustatachykinin I TFA is a insect tachykinin-related peptide isolated from Locusta migratoria. Locustatachykinin I TFA exhibits sequence homologies with the vertebrate tachykinins. In Lacanobia, Locustatachykinin I TFA is also a substrate for a deamidase.
For research use only. We do not sell to patients.
- Formula: C45H64F3N13O13
- Molecular Weight:1052.06
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Storage:
Please store the product under the recommended conditions in the Certificate of Analysis.
Biological Activity
Chemical Information
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Molecular Weight 1052.06
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Formula C45H64F3N13O13
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Sequence Shortening
GPSGFYGVR-NH2
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Shipping
Room temperature in continental US; may vary elsewhere.
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Storage
Please store the product under the recommended conditions in the Certificate of Analysis.
Solvent & Solubility
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:
| Contents | Assign value | |
|---|---|---|
| Acidic amino acid | Asp (D), Glu (E), and the C-terminal -COOH. | -1 |
| Basic amino acid | Arg (R), Lys (K), His (H), and the N-terminal -NH2 | +1 |
| Neutral amino acid | Gly (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 peptide | Details |
|---|---|
| Negative (<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. |
Purity & Documentation
References
[1]. L Schoofs, et al. Locustatachykinin I and II, two novel insect neuropeptides with homology to peptides of the vertebrate tachykinin family. FEBS Lett. 1990 Feb 26;261(2):397-401. [Content Brief]
[2]. R Elwyn Isaac, et al. Inactivation of a tachykinin-related peptide: identification of four neuropeptide-degrading enzymes in neuronal membranes of insects from four different orders. Peptides. 2002 Apr;23(4):725-33. [Content Brief]
Calculators
Concentration (start) × Volume (start) = Concentration (final) × Volume (final)