Date published: 2026-5-30

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Rpb4 Inhibitors

The term Rpb4 inhibitors refers to a class of chemical compounds that have shown the ability to target and modulate the activity of Rpb4, which is a subunit of RNA polymerase II (RNAP II). RNA polymerase II is a vital enzyme responsible for transcription, the process of converting DNA into RNA, which is a fundamental step in gene expression and protein synthesis. Rpb4 is a non-essential subunit of RNAP II, but it plays essential roles in the regulation of transcription and the assembly of the RNAP II complex. The search for Rpb4 inhibitors has gained significant attention in the field of transcriptional regulation and gene expression. By specifically targeting Rpb4, these inhibitors may exert effects on transcription initiation and elongation, leading to potential impacts on gene regulation and cellular functions. The primary goal of studying Rpb4 inhibitors is to deepen our understanding of the intricate mechanisms underlying transcriptional processes and the functional relevance of Rpb4 within the RNAP II complex.

The chemical structures of Rpb4 inhibitors can vary significantly, as researchers explore a diverse array of compounds to identify potential interactions with the Rpb4 subunit. Some inhibitors may be small organic molecules designed with specific pharmacophores that allow them to bind to Rpb4 or disrupt its interactions within the RNAP II complex. Others could be natural compounds or derivatives found in various sources, such as plants or microorganisms, that exhibit selective inhibition of Rpb4. Due to the intricate nature of transcriptional machinery and the multiple subunits involved in RNAP II, the specificity and selectivity of Rpb4 inhibitors are subjects of intense investigation. Researchers aim to elucidate the precise mechanisms of action through which these compounds exert their inhibitory effects on Rpb4 and, by extension, on the transcription process.

SEE ALSO...

Product NameCAS #Catalog #QUANTITYPriceCitationsRATING

α-Amanitin

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

This natural toxin is found in certain species of mushrooms and acts as a potent RNA polymerase II inhibitor by specifically targeting its RPB1 subunit.

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)

A well-known antibiotic that also has inhibitory effects on RNA polymerase II, affecting its ability to initiate transcription.

Triptolide

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

A compound derived found in the Chinese herb Tripterygium wilfordii, known to inhibit RNA polymerase II and modulate various transcription factors.

BMH-21

896705-16-1sc-507460
10 mg
$165.00
(0)

A synthetic compound reported to inhibit RNA polymerase II and exhibit anticancer properties.

DRB

53-85-0sc-200581
sc-200581A
sc-200581B
sc-200581C
10 mg
50 mg
100 mg
250 mg
$43.00
$189.00
$316.00
$663.00
6
(1)

A small molecule inhibitor known to target RNA polymerase II and block transcription elongation.

CX-5461

1138549-36-6sc-507275
5 mg
$245.00
(0)

A selective inhibitor of RNA polymerase I transcription, but it may also affect other RNA polymerases, including RNA polymerase II.

Catechin

154-23-4sc-205624
sc-205624A
1 mg
5 mg
$133.00
$299.00
3
(0)

Catechin has been investigated for their potential to inhibit RNA polymerase II.

Mithramycin A

18378-89-7sc-200909
1 mg
$55.00
6
(1)

An antibiotic with anti-cancer properties that can inhibit RNA polymerase II activity.

Flavopiridol

146426-40-6sc-202157
sc-202157A
5 mg
25 mg
$78.00
$259.00
41
(3)

This synthetic compound has been studied for its ability to inhibit CDK9, a kinase involved in transcription regulation and elongation.

Ellipticine

519-23-3sc-200878
sc-200878A
10 mg
50 mg
$145.00
$569.00
4
(1)

A naturally occurring alkaloid known for its inhibitory effects on DNA and RNA synthesis, including RNA polymerase II.