PQK7
PQK7 is an α-synuclein (α-synuclein) binder with a Kd value of 4 μM. PQK7 binds to key residues in the NAC region of ⍺-Syn, enhances the fluctuation of ⍺-Syn, reduces β-sheet content, maintains the solubility of ⍺-Syn monomers, and preserves the normal function of the protein. PQK7 reduces the toxicity of ⍺-Syn aggregates, restores cell cycle progression, decreases apoptosis (apoptosis), and inhibits ROS production. PQK7 can be used for the research of Parkinson's disease.
For research use only. We do not sell to patients.
- Formula: C32H56N10O11
- Molecular Weight:756.85
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Storage:
Please store the product under the recommended conditions in the Certificate of Analysis.
All α-synuclein Isoforms
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Biological Activity
PQK7 (2.5-70 μM; 7-32 h) inhibits α-Syn fibril formation, reduces ThT fluorescence by approximately 40% after 30 h, and exhibits sustained inhibitory activity over time, but does not disrupt pre-formed fibrils[1].
PQK7 (2-20 μM; 24 h) reduces β-sheet formation of α-Syn monomers and induces the transition of this protein to a random coil conformation[1].
PQK7 (2.5 μM; 0-48 h) reduces the number and size of α-Syn aggregates[1].
PQK7 (2.5 μM; 12-32 h) maintains α-Syn in a soluble state during the fibrosis process[1].
PQK7 (2.5-70 μM; ~48 h) reduces the seeding activity of α-Syn fibrillation products; additionally, at concentrations of 2.5-30 μM for 30 h, it inhibits preformed fibril-induced secondary α-Syn fibrillation[1].
PQK7 (2 μM; 24 h) reduces the nucleation of α-Syn monomers on preformed α-Syn fibrils[1].
PQK7 (2 μM; 24 h) reduces α-Syn aggregate-induced cytotoxicity in SH-SY5Y cells and restores cell viability after 24 h of treatment[1].
PQK7 (2 μM; 36 h fibril formation, 24 h cell treatment) restores normal cell cycle progression in SH-SY5Y cells treated with 36 h-aged α-Syn fibrils, reverses the decrease in the proportion of G1-phase cells, and reduces the proportion of cells entering the apoptotic sub-G1 phase after 24 h of treatment[1].
PQK7 (2-70 μM; 6 h) reduces intracellular ROS levels induced by α-Syn aggregates in SH-SY5Y cells[1].
PQK7 (2 μM; 36 h fibril formation, 24 h cell treatment) significantly reduces late apoptosis and necrosis induced by α-Syn fibril treatment for 24 h in SH-SY5Y cells, while slightly increasing the level of early apoptosis[1].
MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only.
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Cell Line:SH-SY5Y neuroblastoma cells
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Concentration:2 μM (used during α-Syn aggregate formation); 70 μM (PQK7 alone)
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Incubation Time:24 h
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Result:Mitigated α-Syn aggregate-induced cytotoxicity when used at 2 μM during aggregate formation.
Maintained ~97% cell viability at 70 μM when used alone, near untreated control levels.
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Cell Line:SH-SY5Y cells
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Concentration:2 μM (used during α-Syn aged fibril formation)
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Incubation Time:36 h (fibril formation); 24 h (cell treatment)
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Result:Reduced late apoptosis from 18.8% to 4.84% and necrosis from 7.26% to 0.91% compared to α-Syn aged fibrils alone.
Slightly increased early apoptosis to 7.96% compared to controls.
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Cell Line:SH-SY5Y cells
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Concentration:2 μM (used during α-Syn aged fibril formation)
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Incubation Time:36 h (fibril formation); 24 h (cell treatment)
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Result:Restored G1 phase cells from 43.62% to 65.76% compared to α-Syn aged fibrils alone.
Reduced sub-G1 (apoptotic) cells from 36.35% to 8.78%, similar to untreated control cells.
Chemical Information
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Molecular Weight 756.85
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Formula C32H56N10O11
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Sequence
Pro-Gln-Lys-Thr-Val-Glu-Gly-NH2
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Sequence Shortening
PQKTVEG-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.
Purity & Documentation
References
Calculators
Concentration (start) × Volume (start) = Concentration (final) × Volume (final)