Date published: 2026-6-10

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Sir3 Activators

Sir3 Activators refers to a class of chemical compounds that have demonstrated the ability to modulate the activity of the Sir3 protein within the Silent Information Regulator (SIR) complex. Sir3 is a key player in epigenetic regulation, specifically involved in gene silencing at distinct chromosomal loci, such as telomeres and mating-type regions, in yeast, notably Saccharomyces cerevisiae. Members of this chemical class exert their influence by directly interacting with Sir3 or by engaging with cellular pathways and processes that intricately connect to Sir3-mediated chromatin regulation.

Chemicals classified as Sir3 Activators often exhibit characteristics that promote a more permissive chromatin state, allowing for enhanced gene expression in regions where Sir3-mediated silencing is prevalent. Some of these compounds may function by modifying the acetylation or methylation status of histones, the protein components of chromatin. Additionally, certain Sir3 Activators may target enzymes involved in post-translational modifications of histones, influencing the overall chromatin structure and, consequently, Sir3 binding and function. The intricate interplay between Sir3 and these activators highlights the importance of understanding the molecular mechanisms that govern chromatin dynamics, contributing to a broader comprehension of gene expression regulation in eukaryotic cells.

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Items 1 to 10 of 11 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)

Inhibits histone deacetylases (HDACs), potentially activating Sir3 and promoting chromatin activation.

5-Aza-2′-Deoxycytidine

2353-33-5sc-202424
sc-202424A
sc-202424B
25 mg
100 mg
250 mg
$218.00
$322.00
$426.00
7
(1)

Inhibitor of histone methyltransferases, activating chromatin structure and, indirectly, Sir3 activity.

Resveratrol

501-36-0sc-200808
sc-200808A
sc-200808B
100 mg
500 mg
5 g
$80.00
$220.00
$460.00
64
(2)

Sirtuin activator; may indirectly activate Sir3 through modulation of the SIR complex.

5-Azacytidine

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

Inhibits DNA methyltransferases, leading to changes in DNA methylation patterns that may activate Sir3-mediated processes.

AICAR

2627-69-2sc-200659
sc-200659A
sc-200659B
50 mg
250 mg
1 g
$65.00
$280.00
$400.00
48
(2)

Activates AMP-activated protein kinase (AMPK), potentially activating cellular energy regulation and Sir3 activity.

Rapamycin

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

Inhibits mTOR, a pathway associated with chromatin activation, possibly indirectly affecting Sir3 activation.

LY 294002

154447-36-6sc-201426
sc-201426A
5 mg
25 mg
$123.00
$400.00
148
(1)

PI3K/Akt inhibitor; modulates signaling pathways that may activate Sir3 and chromatin activation indirectly.

BAY 11-7082

19542-67-7sc-200615B
sc-200615
sc-200615A
5 mg
10 mg
50 mg
$62.00
$85.00
$356.00
155
(1)

NF-κB inhibitor; modulates immune response and gene regulation, potentially activating Sir3 indirectly.

Olaparib

763113-22-0sc-302017
sc-302017A
sc-302017B
250 mg
500 mg
1 g
$210.00
$305.00
$495.00
10
(1)

Inhibits DNA repair enzyme PARP, potentially activating Sir3 indirectly through interference with DNA repair processes.

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

133407-82-6sc-201270
sc-201270A
sc-201270B
5 mg
25 mg
100 mg
$60.00
$265.00
$1000.00
163
(3)

Proteasome inhibitor; affects protein degradation processes, which may have downstream effects on Sir3 activation.