Cyclo(Val-Val-Ile-d-Ala-Trp-Gly)
Cyclo (Val-Val-Ile-d-Ala-Trp-Gly) (Cyclo(VVIaWG)) is a six-membered cyclic peptide designed based on the C-terminal region of Aβ1-42. Cyclo (Val-Val-Ile-d-Ala-Trp-Gly) binds selectively to Aβ15-36 (Kd = 0.6 μM), regulates the aggregation of Aβ1-42 at high concentrations, weakly inhibits fibrillation at a 10-fold excess, and inhibits oligomerization at equimolar concentrations. Cyclo (Val-Val-Ile-d-Ala-Trp-Gly) does not interfere with the aggregation of IAPP. Cyclo (Val-Val-Ile-d-Ala-Trp-Gly) can serve as a targeting ligand for fluorescent probes of Aβ prefibrillar aggregates, and is applicable to research related to Alzheimer's disease.
For research use only. We do not sell to patients.
- Formula: C32H47N7O6
- Molecular Weight:625.76
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Storage:
Please store the product under the recommended conditions in the Certificate of Analysis.
Biological Activity
Description
In Vitro
Cyclo (Val-Val-Ile-d-Ala-Trp-Gly) (compound 5) at concentrations of 10-100 μM does not inhibit Aβ1-42 fibrillation at equimolar concentrations, but exerts a weak effect when its molar amount is 10-fold higher than that of the synthetic Aβ1-42 peptide[1].
Cyclo (Val-Val-Ile-d-Ala-Trp-Gly) (0.5-10 μM; 12 h) does not inhibit the oligomerization of Aβ1-42 at sub-stoichiometric ratios, and inhibitory effects are only detected at equimolar concentrations with synthetic Aβ1-42 peptide[1].
Cyclo (Val-Val-Ile-d-Ala-Trp-Gly) (10 μM) interacts with monomeric fluorescein-labeled Aβ1-42 with low affinity[1].
Cyclo (Val-Val-Ile-d-Ala-Trp-Gly) (10 μM) shows no detectable interaction with monomeric fluorescein-labeled Aβ1-28 peptide[1].
Cyclo (Val-Val-Ile-d-Ala-Trp-Gly) (10 μM) binds to fluorescein-labeled monomeric Aβ15-36 peptide with high affinity, as evidenced by a significant reduction in intrinsic fluorescence, with an apparent Kd of 0.58 μM[1].
Cyclo (Val-Val-Ile-d-Ala-Trp-Gly) (75 μM) binds to oligomeric Aβ1-42 molecules, which is confirmed by the positive STD NMR signal observed in the presence of Aβ1-42[1].
Cyclo (Val-Val-Ile-d-Ala-Trp-Gly) (6-60 μM) does not inhibit IAPP fibrillation when used at equimolar concentrations or at a 10-fold molar excess relative to the synthetic IAPP peptide[1].
Cyclo (Val-Val-Ile-d-Ala-Trp-Gly) (10 μM) binds to monomeric fluorescein-labeled IAPP peptide with low affinity[1].
MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only.
Chemical Information
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Molecular Weight 625.76
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Formula C32H47N7O6
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Synonyms
Cyclo(VVIaWG)
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Sequence
Cyclo(Val-Val-Ile-{d-Ala}-Trp-Gly)
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Sequence Shortening
Cyclo(VVI-{d-Ala}-WG)
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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.
Purity & Documentation
References
Calculators
Concentration (start) × Volume (start) = Concentration (final) × Volume (final)