Date published: 2026-4-1

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Kinesin Inhibitors

Chemical inhibitors of Kinesin play a crucial role in the specific inhibition of its motor activity, which is fundamental to mitotic spindle assembly and cell division. Monastrol, a well-characterized small molecule, directly targets Kinesin Eg5 and impedes its motor activity, leading to an arrest in the mitotic process. Similarly, Ispinesib, another potent inhibitor, binds tightly to Kinesin Eg5, preventing proper spindle formation, which is essential for cell division. Filanesib further exemplifies the targeted approach by selectively binding to Kinesin Eg5, thereby arresting the cell cycle. S-trityl-L-cysteine operates by specifically inhibiting the ATPase activity of Kinesin Eg5, an action that disrupts microtubule function and the mitotic process. Dimethylenastron also targets Kinesin Eg5, leading to impaired separation of spindle poles during mitosis. This precise intervention by these chemicals culminates in the disruption of the mitotic spindle function, which is a critical step in cell division. Continuing with the inhibition mechanisms, 4-Acetylphenylboronic acid acts as an inhibitor of Kinesin Eg5, inducing mitotic arrest by hindering spindle formation. EMD-534085, a chemical with a long alphanumeric designation, selectively disrupts centrosome integrity and spindle assembly by inhibiting Kinesin Eg5. GSK-923295 specifically targets the centromere-associated protein E (CENP-E) Kinesin, obstructing its motor activity, which is pivotal for chromosome alignment and segregation during mitosis. K858 obstructs ATPase activity of Kinesin Eg5 as well, halting cell division. MK-0731, another inhibitor, halts Kinesin Eg5 activity, resulting in cell cycle arrest by disrupting spindle formation. 5-Iodotubercidin modifies the ATP-binding site of Kinesin Eg5, which can alter microtubule dynamics critical for cell division. Lastly, AZ82 is a selective inhibitor that prevents spindle fiber formation by targeting Kinesin Eg5, leading to mitotic arrest. Each of these chemicals specifically undermines the Kinesin-dependent mechanisms fundamental to cell mitosis, demonstrating the diversity and specificity of chemical interventions that can inhibit Kinesin function.
Product NameCAS #Catalog #QUANTITYPriceCitationsRATING

AZ 3146

1124329-14-1sc-361114
sc-361114A
10 mg
50 mg
$218.00
$905.00
7
(1)

AZ 3146 functions as a selective modulator of kinesin motor proteins, exhibiting unique interactions that enhance its binding affinity to specific kinesin isoforms. This compound alters the conformational states of kinesins, influencing their motility along microtubules. Its distinct reaction kinetics facilitate a nuanced regulation of intracellular transport processes, potentially affecting cargo delivery and cellular organization. The compound's physical properties contribute to its stability and efficacy in modulating kinesin activity.

Monastrol

254753-54-3sc-202710
sc-202710A
1 mg
5 mg
$120.00
$233.00
10
(1)

Monastrol is a cell-permeable small molecule inhibitor that specifically inhibits the motor activity of Kinesin Eg5.

SB 743921

940929-33-9sc-364609
sc-364609A
5 mg
10 mg
$265.00
$666.00
(0)

SB 743921 acts as a potent inhibitor of kinesin motor proteins, demonstrating a unique ability to disrupt the ATPase activity essential for kinesin function. This compound selectively targets specific kinesin isoforms, leading to altered microtubule dynamics and impaired intracellular transport. Its distinct molecular interactions result in a competitive inhibition mechanism, affecting the rate of cargo movement and influencing cellular architecture. The compound's stability enhances its effectiveness in modulating kinesin-driven processes.

S-Trityl-L-cysteine

2799-07-7sc-202799
sc-202799A
1 g
5 g
$32.00
$66.00
6
(1)

S-Trityl-L-cysteine exhibits a remarkable capacity to modulate kinesin activity through its unique thiol group, which facilitates specific interactions with key amino acid residues in the kinesin motor domain. This compound alters the conformational dynamics of kinesin, impacting its binding affinity for microtubules. By influencing the hydrolysis of ATP, it effectively alters the kinetics of motor protein movement, leading to significant changes in intracellular transport mechanisms and cellular organization.

K 858

72926-24-0sc-300856
sc-300856A
10 mg
50 mg
$159.00
$693.00
(0)

K 858 is a potent modulator of kinesin function, characterized by its ability to engage in selective hydrogen bonding with critical residues within the kinesin motor domain. This interaction induces conformational shifts that enhance the stability of the kinesin-microtubule complex. Additionally, K 858 influences the ATPase activity of kinesin, thereby fine-tuning the rate of motor protein translocation along microtubules and affecting intracellular cargo transport efficiency.

Ispinesib

336113-53-2sc-364747
10 mg
$505.00
(0)

Ispinesib is a selective inhibitor of kinesin-5, exhibiting unique binding dynamics that disrupt the motor protein's function. It interacts with the ATP-binding site, leading to altered conformational states that hinder the kinesin's ability to translocate along microtubules. This inhibition affects the mitotic spindle assembly, showcasing Ispinesib's role in modulating the kinetics of microtubule dynamics and influencing cellular transport mechanisms.

Eg5 Inhibitor III, Dimethylenastron

863774-58-7sc-221576
sc-221576A
sc-221576B
sc-221576C
1 mg
5 mg
10 mg
25 mg
$38.00
$132.00
$244.00
$516.00
1
(0)

Dimethylenastron is a specific inhibitor of Kinesin Eg5, impairing mitotic spindle pole separation.

GSK 923295

1088965-37-0sc-490136
5 mg
$290.00
(0)

GSK-923295 is a specific inhibitor of the centromere-associated protein E (CENP-E) kinesin motor activity.

MLN 8054

869363-13-3sc-484828
5 mg
$398.00
(0)

Also known as MK-0731, it is a potent inhibitor of Kinesin Eg5, inducing cell cycle arrest by disrupting spindle formation.

5-Iodotubercidin

24386-93-4sc-3531
sc-3531A
1 mg
5 mg
$153.00
$464.00
20
(2)

Inhibits Kinesin Eg5 by modulating the ATP-binding site, affecting microtubule dynamics.