Date published: 2026-5-18

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BC032203 Activators

Chemical activators of BRD4IN-B can influence the protein's activity through various interactions with chromatin structure and histone modifications. Trichostatin A and MS-275 act as histone deacetylase inhibitors, increasing the acetylation levels of histone proteins, thereby creating a more accessible chromatin state that can facilitate BRD4IN-B to bind acetylated histones and carry out its chromatin remodeling functions. On the other hand, JQ1, (+)-JQ1, I-BET151, CPI-0610, OTX015, PFI-1, RVX-208, and GSK525762 function by inhibiting the bromodomains of BRD4, a protein closely associated with chromatin. The displacement of BRD4 from the chromatin by these small molecules creates a scenario where BRD4IN-B's role becomes more prominent, as it is then recruited to carry out the necessary chromatin remodeling activities, compensating for the inhibited action of BRD4.

Additionally, LMK-235, by inhibiting histone deacetylase, can also lead to increased histone acetylation, which in turn can promote the association of BRD4IN-B with chromatin due to its affinity for acetylated lysine residues. PF-CBP1, which selectively inhibits the CREBBP/EP300 bromodomains, creates a similar effect by indirectly enhancing the role of BRD4IN-B in maintaining chromatin structure and function. These chemical activators, through their unique mechanisms, can lead to a state where the chromatin remodeling capabilities of BRD4IN-B are essential to sustain the dynamic nature of chromatin, ensuring the accessibility of genetic information for various cellular processes.

SEE ALSO...

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)

Trichostatin A is a histone deacetylase inhibitor that promotes acetylation of histones, leading to a relaxed chromatin structure. This relaxed state can facilitate BRD4 interacting chromatin remodeling complex associated protein like (BRD4IN-B) to access and bind acetylated histones, thereby activating its chromatin remodeling function.

I-BET 151 Hydrochloride

1300031-49-5 (non HCl Salt)sc-391115
10 mg
$450.00
2
(0)

I-BET151 is a BET bromodomain inhibitor that interferes with the binding of BRD4 to acetylated histones. The inhibition of BRD4 can trigger a feedback mechanism where BRD4IN-B is upregulated and becomes more active to maintain chromatin responses.

(±)-JQ1

1268524-69-1sc-472932
sc-472932A
5 mg
25 mg
$231.00
$863.00
1
(0)

(+)-JQ1 is the enantiomer of JQ1 with higher specificity and affinity for BRD4 bromodomains. Binding of (+)-JQ1 to BRD4 leads to the dissociation of BRD4 from chromatin, potentially increasing the recruitment and activation of BRD4IN-B for chromatin remodeling and transcriptional regulation.

MS-275

209783-80-2sc-279455
sc-279455A
sc-279455B
1 mg
5 mg
25 mg
$24.00
$90.00
$212.00
24
(2)

MS-275, also known as Entinostat, is a selective histone deacetylase inhibitor that leads to hyperacetylation of histones. Hyperacetylated histones can enhance the activity of BRD4IN-B as it interacts with acetylated lysine residues, promoting chromatin remodeling.

CPI-0610

1380087-89-7sc-507490
10 mg
$495.00
(0)

CPI-0610 is a potent BET bromodomain inhibitor that selectively disrupts the interaction of BRD4 with chromatin. The subsequent alteration in chromatin dynamics can lead to the enhanced recruitment and activation of BRD4IN-B to help sustain necessary chromatin functions.

(S)-2-(4-(4-Chlorophenyl)-2,3,9-trimethyl-6H-thieno[3,2-f][1,2,4]triazolo[4,3-a][1,4]diazepin-6-yl)-N-(4-hydroxyphenyl)acetamide

202590-98-5sc-501130
2.5 mg
$330.00
(0)

OTX015, also known as MK-8628, is a small molecule inhibitor targeting the BET family of bromodomains. By inhibiting BRD4, OTX015 may lead to the compensatory activation of BRD4IN-B to fulfill essential chromatin remodeling roles.

PFI-1

1403764-72-6sc-478504
5 mg
$98.00
(0)

PFI-1 is a BET bromodomain inhibitor that prevents BRD4 from associating with chromatin. This can enhance the necessity for BRD4IN-B's chromatin remodeling activity, effectively activating its function to compensate for the loss of BRD4 activity.

RVX 208

1044870-39-4sc-472700
10 mg
$340.00
(0)

RVX-208, also known as Apabetalone, is a small molecule that targets BET bromodomains. It can perturb the normal function of BRD4, potentially leading to the activation of alternative chromatin remodeling complexes including BRD4IN-B.

GSK 525762A

1260907-17-2sc-490339
sc-490339A
sc-490339B
sc-490339C
sc-490339D
5 mg
10 mg
50 mg
100 mg
1 g
$300.00
$540.00
$940.00
$1680.00
$5900.00
(0)

GSK525762, also known as I-BET762, is a BET bromodomain inhibitor that can disrupt the interaction between BRD4 and chromatin. This disruption may lead to the activation of BRD4IN-B as it may be required to facilitate chromatin remodeling in the absence of BRD4.