Leucokinin VIII
Leucokinin VIII is an diuretic octapeptide isolated form head extracts of the cockroach.
For research use only. We do not sell to patients.
- CAS No.: 2703746-05-6
- Formula: C42H52N10O11
- Molecular Weight:872.92
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Storage:
Please store the product under the recommended conditions in the Certificate of Analysis.
To place orders, for customer services and technical support, please contact: MedChemExpress USA
Tel: 609-228-6898 E-mail: [email protected] [email protected]
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Biological Activity
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Chemical Information
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Solvent & Solubility
- Purity & Documentation
- References
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Help & FAQs
Biological Activity
Leucokinin VIII is an octapeptide, increases the rates of transepithelial NaC1, KC1 and water secretion, increases the Cl conductance of the epithelial shunt via a receptor located at the basolateral side of the epithelium[1]. Leucokinin VIII also activates Ca2+-dependent signal pathway in principal cells of Aedes aegyptiMalpighian tubules[2].
MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only.
Chemical Information
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CAS No. 2703746-05-6
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Molecular Weight 872.92
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Formula C42H52N10O11
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Synonyms
Leucokinin 8
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Sequence
Gly-Ala-Ser-Phe-Tyr-Ser-Trp-Gly-NH2
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Sequence Shortening
GASFYSWG-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]. Pannabecker TL, et al. Regulation of epithelial shunt conductance by the peptide leucokinin. J Membr Biol. 1993 Feb;132(1):63-76. [Content Brief]
[2]. Yu MJ, et al. Leucokinin activates Ca(2+)-dependent signal pathway in principal cells of Aedes aegypti Malpighian tubules. Am J Physiol Renal Physiol. 2002 Sep;283(3):F499-508. [Content Brief]
Calculators
Concentration (start) × Volume (start) = Concentration (final) × Volume (final)
Leucokinin VIII Related Classifications
HY-P1496 Related Classifications
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