Date published: 2026-5-16

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Srb4 Activators

Srb4, standing for Suppressor of RNA polymerase B 4, is a component of the mediator complex in the yeast Saccharomyces cerevisiae. The mediator complex is a critical multi-protein assembly that plays a pivotal role in the regulation of gene transcription. It acts as a bridge, connecting transcription factors to RNA polymerase II, thus facilitating the transcription of genes into messenger RNA.

Srb4 is particularly significant as it is part of the core module of the mediator complex. This core module is essential for the mediator's interaction with RNA polymerase II and for the integrity of the entire mediator complex. The role of Srb4 and the mediator complex extends beyond mere transcription initiation; it is involved in various stages of the transcription cycle, including pause release and elongation.The mediator complex, inclusive of Srb4, is also crucial in conveying regulatory signals to RNA polymerase II. This includes responses to environmental cues, thus allowing the cell to adapt its gene expression profile in response to changes in its environment. The mediator complex thereby acts as an integrator of multiple signaling pathways that regulate gene expression.

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Items 1 to 10 of 12 total

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Product NameCAS #Catalog #QUANTITYPriceCitationsRATING

Trichostatin A

58880-19-6sc-3511
sc-3511A
sc-3511B
sc-3511C
sc-3511D
1 mg
5 mg
10 mg
25 mg
50 mg
$152.00
$479.00
$632.00
$1223.00
$2132.00
33
(3)

TSA, a histone deacetylase inhibitor, might upregulate Srb4 expression by altering chromatin structure and enhancing transcription.

5-Azacytidine

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

5-Azacytidine, a DNA methyltransferase inhibitor, could influence Srb4 expression by changing DNA methylation patterns.

Rapamycin

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

Rapamycin might affect Srb4 expression through its role in the mTOR signaling pathway, which is involved in cell growth and metabolism.

Roscovitine

186692-46-6sc-24002
sc-24002A
1 mg
5 mg
$94.00
$265.00
42
(2)

Roscovitine, a cyclin-dependent kinase inhibitor, could potentially modulate Srb4 expression by influencing cell cycle-related transcription.

Lithium

7439-93-2sc-252954
50 g
$214.00
(0)

Lithium chloride may influence Srb4 expression through pathways related to mood regulation and cellular stress response.

Sodium Butyrate

156-54-7sc-202341
sc-202341B
sc-202341A
sc-202341C
250 mg
5 g
25 g
500 g
$31.00
$47.00
$84.00
$222.00
19
(3)

Sodium butyrate, a histone deacetylase inhibitor, could upregulate Srb4 expression by affecting chromatin accessibility and gene 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)

Retinoic acid might modulate Srb4 expression as part of its role in cellular differentiation and gene regulation.

Hydroxyurea

127-07-1sc-29061
sc-29061A
5 g
25 g
$78.00
$260.00
18
(1)

Hydroxyurea, inducing DNA damage response, may affect Srb4 expression as part of the cellular stress response mechanism.

Cholecalciferol

67-97-0sc-205630
sc-205630A
sc-205630B
1 g
5 g
10 g
$71.00
$163.00
$296.00
2
(1)

Vitamin D3 could influence Srb4 expression through its role in gene regulation and cellular metabolism.

Curcumin

458-37-7sc-200509
sc-200509A
sc-200509B
sc-200509C
sc-200509D
sc-200509F
sc-200509E
1 g
5 g
25 g
100 g
250 g
1 kg
2.5 kg
$37.00
$69.00
$109.00
$218.00
$239.00
$879.00
$1968.00
47
(1)

Curcumin may modulate Srb4 expression through its anti-inflammatory properties and effects on transcriptional regulation.