CENP-O Activators
Chemical activators of CENP-O play a significant role in the modulation of its activity during cell division. Paclitaxel and Taxol, sharing the same CAS number, are two such chemicals that stabilize microtubules. This stabilization is crucial as it enhances CENP-O's role in the maintenance of the kinetochore-microtubule attachments, which are essential for accurate chromosome segregation. Similarly, S-Trityl-L-cysteine acts by inhibiting mitotic spindle dynamics, which indirectly necessitates an increase in CENP-O activity to ensure correct chromosome alignment and secure segregation. The arrest of cells in mitosis by Monastrol, which inhibits kinesin Eg5, also results in an upregulation of CENP-O function. This upregulation helps to maintain the attachment of chromosomes to the mitotic spindle, thus reinforcing its activity in response to mitotic stress.
On the other hand, Nocodazole disrupts microtubule polymerization, affecting spindle formation and compelling CENP-O to stabilize kinetochore-microtubule interactions during the activation of the spindle assembly checkpoint. MG-132's role as a proteasome inhibitor leads to the accumulation of cell cycle proteins, including CENP-O, preventing its degradation and enhancing kinetochore stability. Inhibition of Aurora kinases by ZM447439 and Alisertib increases the requirement for CENP-O's correctional activity for kinetochore-microtubule attachment errors. SP600125's inhibition of JNK, BI2536's inhibition of Plk1, and Purvalanol A's inhibition of cyclin-dependent kinases result in cell cycle arrest situations where the role of CENP-O becomes more pronounced in maintaining chromosome alignment and segregation. Lastly, Colchicine binds to tubulin to prevent microtubule polymerization, leading to a condition where the activation of CENP-O is imperative to maintain the kinetochore-microtubule attachments necessary for proper cell cycle progression. Each of these chemicals, by disrupting normal cell cycle events, necessitates a heightened role for CENP-O to ensure the fidelity of chromosome segregation.
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| Product Name | CAS # | Catalog # | QUANTITY | Price | Citations | RATING |
|---|---|---|---|---|---|---|
Taxol | 33069-62-4 | sc-201439D sc-201439 sc-201439A sc-201439E sc-201439B sc-201439C | 1 mg 5 mg 25 mg 100 mg 250 mg 1 g | $41.00 $74.00 $221.00 $247.00 $738.00 $1220.00 | 39 | |
Paclitaxel stabilizes microtubules and because CENP-O is a centromere-associated protein involved in the stability of the kinetochore-microtubule attachment, paclitaxel's action on microtubules can enhance CENP-O's role in chromosome segregation. | ||||||
S-Trityl-L-cysteine | 2799-07-7 | sc-202799 sc-202799A | 1 g 5 g | $32.00 $66.00 | 6 | |
This chemical inhibits mitotic spindle dynamics. As CENP-O is essential for correct chromosome alignment and segregation during mitosis, the inhibition of spindle dynamics can lead to an increase in the functional activation of CENP-O to stabilize kinetochore fibers. | ||||||
Monastrol | 254753-54-3 | sc-202710 sc-202710A | 1 mg 5 mg | $120.00 $233.00 | 10 | |
Monastrol is a kinesin Eg5 inhibitor which leads to the arrest of cells in mitosis. CENP-O function is upregulated during mitotic arrest to maintain the attachment of chromosomes to the mitotic spindle, thereby enhancing its activity. | ||||||
Nocodazole | 31430-18-9 | sc-3518B sc-3518 sc-3518C sc-3518A | 5 mg 10 mg 25 mg 50 mg | $59.00 $85.00 $143.00 $247.00 | 38 | |
Nocodazole disrupts microtubule polymerization, which directly affects spindle formation. The activation of CENP-O is required for the stabilization of kinetochore-microtubule interactions during mitotic spindle checkpoint activation. | ||||||
MG-132 [Z-Leu- Leu-Leu-CHO] | 133407-82-6 | sc-201270 sc-201270A sc-201270B | 5 mg 25 mg 100 mg | $60.00 $265.00 $1000.00 | 163 | |
MG-132 is a proteasome inhibitor that can lead to the accumulation of proteins involved in the cell cycle. CENP-O, being part of the centromere complex, can be functionally activated due to the inhibition of its degradation, enhancing its stability. | ||||||
ZM-447439 | 331771-20-1 | sc-200696 sc-200696A | 1 mg 10 mg | $153.00 $356.00 | 15 | |
ZM447439 is an Aurora kinase inhibitor. Inhibition of Aurora kinases can increase CENP-O activity as it is required for the correction of kinetochore-microtubule attachment errors, a process regulated by Aurora kinases. | ||||||
SP600125 | 129-56-6 | sc-200635 sc-200635A | 10 mg 50 mg | $40.00 $150.00 | 257 | |
SP600125 is an inhibitor of JNK, which can affect cell cycle progression. Inhibition of JNK can lead to compensatory activation of other cell cycle proteins, potentially including CENP-O, to maintain proper chromosome alignment and segregation. | ||||||
BI6727 | 755038-65-4 | sc-364432 sc-364432A sc-364432B sc-364432C sc-364432D | 5 mg 50 mg 100 mg 500 mg 1 g | $150.00 $1050.00 $1665.00 $3329.00 $4382.00 | 1 | |
BI2536 is a Plk1 inhibitor that can lead to mitotic arrest. During mitotic arrest, CENP-O activity is critical for maintaining chromosome cohesion and stabilization of kinetochore-microtubule attachments. | ||||||
Purvalanol A | 212844-53-6 | sc-224244 sc-224244A | 1 mg 5 mg | $72.00 $297.00 | 4 | |
Purvalanol A is a cyclin-dependent kinase inhibitor. CDK inhibition can lead to cell cycle arrest, during which the functional activity of CENP-O is necessary for maintaining proper kinetochore function. | ||||||
Colchicine | 64-86-8 | sc-203005 sc-203005A sc-203005B sc-203005C sc-203005D sc-203005E | 1 g 5 g 50 g 100 g 500 g 1 kg | $100.00 $321.00 $2289.00 $4484.00 $18207.00 $34749.00 | 3 | |
Colchicine binds to tubulin, preventing microtubule polymerization, which is a critical event in mitosis. This disruption requires enhanced activation of CENP-O to maintain kinetochore-microtubule attachments essential for proper cell cycle progression. | ||||||