Date published: 2025-11-24

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FBXO42 Inhibitors

FBXO42, a member of the F-box protein family, serves as the substrate recognition component of the Skp1-Cullin-F-box (SCF) E3 ubiquitin ligase complex. It plays a crucial role in the regulation of protein turnover by targeting specific substrates for ubiquitination and subsequent proteasomal degradation. Functionally, FBXO42 contributes to various cellular processes, including cell cycle progression, DNA repair, signal transduction, and apoptosis, by controlling the abundance of key regulatory proteins. Dysregulation of FBXO42 activity has been implicated in the pathogenesis of various diseases, including cancer, neurodegenerative disorders, and inflammatory conditions. The inhibition of FBXO42 involves targeting its ubiquitin ligase activity or modulating the expression of its target substrates. Several chemical inhibitors have been identified that directly interfere with the function of FBXO42, including proteasome inhibitors like MG-132 and Velcade, which lead to the accumulation of FBXO42 substrates and subsequent inhibition of its activity. Additionally, compounds such as Nutlin-3 and MLN4924 disrupt the interaction between FBXO42 and its substrates or inhibit the neddylation of cullin proteins, respectively, thereby preventing substrate ubiquitination and degradation. Indirect inhibition of FBXO42 can also be achieved by down-regulating its expression using inhibitors of transcription or protein synthesis, such as Actinomycin D or Cycloheximide. Overall, understanding the mechanisms of FBXO42 inhibition provides insights into its role in cellular homeostasis and disease pathology, offering potential avenues for intervention in FBXO42-associated disorders.

Items 1 to 10 of 11 total

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Product NameCAS #Catalog #QUANTITYPriceCitationsRATING

MG-132 [Z-Leu- Leu-Leu-CHO]

133407-82-6sc-201270
sc-201270A
sc-201270B
5 mg
25 mg
100 mg
$56.00
$260.00
$980.00
163
(3)

MG-132 inhibits the proteasome, leading to the accumulation of FBXO42 substrate proteins and subsequent degradation of FBXO42 itself, resulting in the inhibition of FBXO42 activity.

Nutlin-3

548472-68-0sc-45061
sc-45061A
sc-45061B
1 mg
5 mg
25 mg
$56.00
$212.00
$764.00
24
(1)

Nutlin-3 disrupts the interaction between FBXO42 and its substrate proteins, preventing their ubiquitination and degradation, thus inhibiting FBXO42-mediated protein turnover and promoting substrate stabilization.

MLN 4924

905579-51-3sc-484814
1 mg
$280.00
1
(0)

MLN4924 inhibits NEDD8-activating enzyme (NAE), leading to the inhibition of cullin neddylation and subsequent inactivation of SCF (Skp1-Cullin-F-box) E3 ligase complexes, including FBXO42, thereby preventing substrate ubiquitination and degradation.

Actinomycin D

50-76-0sc-200906
sc-200906A
sc-200906B
sc-200906C
sc-200906D
5 mg
25 mg
100 mg
1 g
10 g
$73.00
$238.00
$717.00
$2522.00
$21420.00
53
(3)

Actinomycin D binds to DNA, inhibiting transcription and leading to the down-regulation of FBXO42 expression, thereby indirectly inhibiting FBXO42 activity.

Fluorouracil

51-21-8sc-29060
sc-29060A
1 g
5 g
$36.00
$149.00
11
(1)

5-Fluorouracil inhibits thymidylate synthase, disrupting nucleotide synthesis and leading to the down-regulation of FBXO42 expression, thereby indirectly inhibiting FBXO42 activity.

Cycloheximide

66-81-9sc-3508B
sc-3508
sc-3508A
100 mg
1 g
5 g
$40.00
$82.00
$256.00
127
(5)

Cycloheximide inhibits protein synthesis, resulting in the down-regulation of FBXO42 expression, thereby indirectly inhibiting FBXO42 activity.

Bortezomib

179324-69-7sc-217785
sc-217785A
2.5 mg
25 mg
$132.00
$1064.00
115
(2)

Bortezomib inhibits the proteasome, leading to the accumulation of FBXO42 substrate proteins and subsequent degradation of FBXO42 itself, resulting in the inhibition of FBXO42 activity.

Eeyarestatin I

412960-54-4sc-358130B
sc-358130
sc-358130A
sc-358130C
sc-358130D
sc-358130E
5 mg
10 mg
25 mg
50 mg
100 mg
500 mg
$112.00
$199.00
$347.00
$683.00
$1336.00
$5722.00
12
(1)

Eeyarestatin I inhibits the proteasome-associated deubiquitinase (DUB) activity, leading to the stabilization of polyubiquitinated proteins and the down-regulation of FBXO42-mediated protein turnover, thereby inhibiting FBXO42 activity.

Pyrrolidinedithiocarbamic acid ammonium salt

5108-96-3sc-203224
sc-203224A
5 g
25 g
$32.00
$63.00
11
(1)

APDC inhibits NF-κB activation, suppressing the expression of FBXO42 target genes involved in inflammation and cell survival, thereby indirectly inhibiting FBXO42 activity.

C646

328968-36-1sc-364452
sc-364452A
10 mg
50 mg
$260.00
$925.00
5
(1)

C646 inhibits p300/CBP histone acetyltransferase activity, leading to the down-regulation of FBXO42 expression by affecting its transcriptional regulation, thereby indirectly inhibiting FBXO42 activity.