Date published: 2025-12-24

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KIF21A Inhibitors

Chemical inhibitors of KIF21A act by disrupting the microtubule network that is essential for the motor function of this protein. Colchicine is one such inhibitor that binds to tubulin, the building block of microtubules, thus preventing their polymerization and effectively inhibiting the ability of KIF21A to traverse along these cellular tracks. Similarly, Vinblastine and Vincristine exert their inhibitory effects by binding to tubulin, which impedes microtubule assembly and, consequently, KIF21A function. Nocodazole and Podophyllotoxin also target tubulin but with a focus on disrupting microtubule polymerization, leading to a dismantling of the structural framework KIF21A requires for movement. These chemicals, by directly targeting the microtubules, render KIF21A's motor activity ineffective as it relies on the integrity of these structures. In addition to those agents that destabilize microtubules, some chemicals inhibit KIF21A by excessively stabilizing these structures, which is also detrimental to the dynamic nature necessary for KIF21A's function. Paclitaxel (Taxol) binds to microtubules and protect them from depolymerization, hindering the natural dynamics of microtubules required for the motor activities of KIF21A. Eribulin follows a related route by inhibiting the growth phase of microtubule dynamics, providing a similar effect on KIF21A activity. On the other hand, Griseofulvin, Albendazole, and Mebendazole introduce a selective disruption in microtubule polymerization, which serves to inhibit KIF21A by compromising the microtubule architecture needed for its operation.
Product NameCAS #Catalog #QUANTITYPriceCitationsRATING

Colchicine

64-86-8sc-203005
sc-203005A
sc-203005B
sc-203005C
sc-203005D
sc-203005E
1 g
5 g
50 g
100 g
500 g
1 kg
$98.00
$315.00
$2244.00
$4396.00
$17850.00
$34068.00
3
(2)

Colchicine disrupts microtubule polymerization by binding to tubulin, which is a primary component of microtubules. KIF21A, as a kinesin motor protein, relies on microtubules for its movement; thus, colchicine's action on microtubules can inhibit KIF21A's function.

Taxol

33069-62-4sc-201439D
sc-201439
sc-201439A
sc-201439E
sc-201439B
sc-201439C
1 mg
5 mg
25 mg
100 mg
250 mg
1 g
$40.00
$73.00
$217.00
$242.00
$724.00
$1196.00
39
(2)

Paclitaxel stabilizes microtubules and prevents their depolymerization, which is expected to hinder the motor activity of KIF21A by reducing the dynamicity of microtubules, a necessary feature for KIF21A's proper function.

Vinblastine

865-21-4sc-491749
sc-491749A
sc-491749B
sc-491749C
sc-491749D
10 mg
50 mg
100 mg
500 mg
1 g
$100.00
$230.00
$450.00
$1715.00
$2900.00
4
(0)

Vinblastine binds to tubulin and inhibits microtubule formation, which can inhibit KIF21A by disrupting the microtubule tracks required for its motor function.

Nocodazole

31430-18-9sc-3518B
sc-3518
sc-3518C
sc-3518A
5 mg
10 mg
25 mg
50 mg
$58.00
$83.00
$140.00
$242.00
38
(2)

Nocodazole disrupts microtubule polymerization, which would inhibit the function of KIF21A by removing its structural substrate needed for motor activity.

Podophyllotoxin

518-28-5sc-204853
100 mg
$82.00
1
(1)

Podophyllotoxin binds to tubulin and inhibits its polymerization into microtubules, which would lead to the inhibition of KIF21A by preventing it from performing its motor function on microtubules.

Eribulin

253128-41-5sc-507547
5 mg
$865.00
(0)

Eribulin inhibits the growth phase of microtubule dynamics which can inhibit KIF21A function by disrupting the microtubule networks that are essential for its motor activity.

Colcemid

477-30-5sc-202550A
sc-202550
sc-202550B
sc-202550C
sc-202550D
sc-202550E
1 mg
5 mg
10 mg
50 mg
100 mg
500 mg
$67.00
$159.00
$312.00
$928.00
$1856.00
$6706.00
7
(1)

Demecolcine, a colchicine derivative, binds tubulin and prevents microtubule polymerization, which would inhibit KIF21A by disrupting the microtubule tracks it requires to function.

Griseofulvin

126-07-8sc-202171A
sc-202171
sc-202171B
5 mg
25 mg
100 mg
$83.00
$216.00
$586.00
4
(2)

Griseofulvin disrupts microtubule function by binding to polymerized microtubules, potentially inhibiting KIF21A by destabilizing the microtubule structures necessary for its activity.

Albendazole

54965-21-8sc-210771
100 mg
$209.00
1
(0)

Albendazole inhibits microtubule polymerization, which could lead to functional inhibition of KIF21A by preventing it from moving along the microtubule tracks.

Mebendazole

31431-39-7sc-204798
sc-204798A
5 g
25 g
$45.00
$87.00
2
(2)

Mebendazole causes selective disruption of microtubule polymerization, which can inhibit KIF21A by impairing the structural framework required for its motor function.