Date published: 2026-5-30

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MSL-2 Inhibitors

MSL-2 inhibitors are a class of compounds that specifically target the Male-specific lethal 2 (MSL-2) protein, a critical component in the regulation of dosage compensation. Dosage compensation is the biological process by which organisms equalize the expression of genes between sexes that have differing numbers of sex chromosomes. In Drosophila, MSL-2 plays a key role in upregulating the transcription of X-linked genes in males, thereby balancing the expression levels with those in females. MSL-2 forms part of the MSL complex, which facilitates the acetylation of histones, particularly at lysine residues of histone H4, thus modifying chromatin structure to allow increased transcription. The specific inhibition of MSL-2 disrupts this process, making these inhibitors useful in understanding chromatin remodeling, gene expression, and epigenetic regulation at a mechanistic level.

From a biochemical standpoint, MSL-2 inhibitors can provide insights into the functional domains of MSL-2, such as its zinc finger domain, which is essential for its binding to nucleic acids. By blocking these interactions, researchers can study the protein's role in broader transcriptional networks, including how it influences chromatin architecture and regulates the transcriptional machinery. MSL-2 inhibitors also shed light on the nature of protein-protein interactions within the MSL complex and other associated cofactors involved in chromatin modification. Investigating the specificity of these inhibitors contributes to our understanding of how selective modulation of protein function can be achieved, paving the way for deeper exploration of transcriptional regulation mechanisms across different species. This class of inhibitors plays a crucial role in molecular biology, allowing for precise manipulation of gene expression at the chromosomal level.

SEE ALSO...

Product NameCAS #Catalog #QUANTITYPriceCitationsRATING

5-Azacytidine

320-67-2sc-221003
500 mg
$280.00
4
(1)

As a cytidine analog, it could incorporate into the MSL-2 gene sequence during DNA replication, resulting in the hypomethylation of gene regulatory regions and subsequent downregulation of MSL-2 transcription.

Actinomycin D

50-76-0sc-200906
sc-200906A
sc-200906B
sc-200906C
sc-200906D
5 mg
25 mg
100 mg
1 g
10 g
$74.00
$243.00
$731.00
$2572.00
$21848.00
53
(3)

This compound intercalates into DNA, preferentially at GC-rich sequences, which could directly obstruct the transcriptional elongation process of the MSL-2 gene, leading to decreased mRNA levels.

Cycloheximide

66-81-9sc-3508B
sc-3508
sc-3508A
100 mg
1 g
5 g
$41.00
$84.00
$275.00
127
(6)

By inhibiting the translocation step in eukaryotic protein synthesis, this chemical could lead to a reduction in the translation of proteins that are essential for the transcriptional activation of the MSL-2 gene.

Rapamycin

53123-88-9sc-3504
sc-3504A
sc-3504B
1 mg
5 mg
25 mg
$63.00
$158.00
$326.00
233
(4)

This mTOR inhibitor could lead to reduced translation of proteins involved in MSL-2 expression by downregulating the activity of mTORC1, a complex involved in ribosomal biogenesis and protein synthesis.

Chloroquine

54-05-7sc-507304
250 mg
$69.00
2
(0)

This compound can raise the pH within intracellular vesicles, potentially disrupting endosomal sorting and trafficking of transcription factors or coactivators necessary for the initiation of MSL-2 transcription.

α-Amanitin

23109-05-9sc-202440
sc-202440A
1 mg
5 mg
$269.00
$1050.00
26
(2)

By binding strongly to RNA polymerase II, α-Amanitin could inhibit the transcriptional process of the MSL-2 gene, thereby reducing the level of MSL-2 mRNA synthesized in the nucleus.

Triptolide

38748-32-2sc-200122
sc-200122A
1 mg
5 mg
$90.00
$204.00
13
(1)

Known to inhibit RNA polymerase II activity, Triptolide could directly decrease the transcription of the MSL-2 gene, leading to a reduction in MSL-2 protein expression.

Retinoic Acid, all trans

302-79-4sc-200898
sc-200898A
sc-200898B
sc-200898C
500 mg
5 g
10 g
100 g
$66.00
$325.00
$587.00
$1018.00
28
(1)

This metabolite of vitamin A could repress MSL-2 gene expression by binding to retinoic acid receptors that interact with the MSL-2 promoter region, inhibiting the initiation of transcription.

Mycophenolic acid

24280-93-1sc-200110
sc-200110A
100 mg
500 mg
$69.00
$266.00
8
(1)

By selectively inhibiting inosine monophosphate dehydrogenase, this compound could suppress the proliferation of cells expressing MSL-2, resulting in an overall decrease of MSL-2 protein levels.

Geldanamycin

30562-34-6sc-200617B
sc-200617C
sc-200617
sc-200617A
100 µg
500 µg
1 mg
5 mg
$39.00
$59.00
$104.00
$206.00
8
(1)

This benzoquinone ansamycin antibiotic could disrupt the chaperone function of Hsp90, potentially leading to the destabilization and degradation of client proteins that are crucial for maintaining MSL-2 expression.