Date published: 2026-1-12

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FIR Activators

FIR Activators, a diverse group of chemical compounds, are specifically tailored to enhance the activity of the Functionally Interacting Region (FIR) within certain proteins. These activators are distinct in their mechanisms, targeting the intricate biochemical pathways that converge on the FIR domain. The central role of the FIR domain is to facilitate protein-protein interactions that are critical for the activation of various cellular processes. For example, certain FIR Activators may bind directly to allosteric sites on the protein, inducing conformational changes that enhance the protein's ability to interact with its partners. This alteration in structure is not merely a passive change but actively promotes a more favorable interaction interface for protein complexes, which is crucial in processes such as signal transduction and cellular regulation.

The efficacy of FIR Activators is also attributed to their ability to influence the post-translational modifications of the target proteins. By affecting the phosphorylation state, these activators can either promote or stabilize the interaction of the FIR with other molecular motifs, thereby enhancing the protein's functional capacity. Some activators achieve this by inhibiting phosphatases that would ordinarily remove phosphate groups from the protein, thus maintaining the protein in a state that is conducive to interaction. Others may function by facilitating the addition of phosphate groups by kinases. The precise molecular interplay and the subsequent biochemical cascades that are triggered by these activators underscore their specificity and the fine-tuned control they exert on the FIR-bearing proteins, amplifying the integral interactions that are central to the protein's activity within the cell.

SEE ALSO...

Items 1 to 10 of 12 total

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Product NameCAS #Catalog #QUANTITYPriceCitationsRATING

Forskolin

66575-29-9sc-3562
sc-3562A
sc-3562B
sc-3562C
sc-3562D
5 mg
50 mg
1 g
2 g
5 g
$78.00
$153.00
$740.00
$1413.00
$2091.00
73
(3)

Forskolin directly elevates cAMP levels, which can lead to the activation of protein kinase A (PKA). PKA phosphorylation events can enhance the activity of FIR by modulating splicing events controlled by the PUF60 gene.

Ionomycin

56092-82-1sc-3592
sc-3592A
1 mg
5 mg
$78.00
$270.00
80
(4)

Ionomycin is a calcium ionophore that raises intracellular calcium levels, thereby potentially activating calcium-dependent protein kinases which can influence the splicing machinery where FIR is a component.

PMA

16561-29-8sc-3576
sc-3576A
sc-3576B
sc-3576C
sc-3576D
1 mg
5 mg
10 mg
25 mg
100 mg
$41.00
$132.00
$214.00
$500.00
$948.00
119
(6)

PMA acts as a potent activator of protein kinase C (PKC), which can phosphorylate proteins involved in RNA processing, potentially affecting FIR function in alternative splicing.

(−)-Epigallocatechin Gallate

989-51-5sc-200802
sc-200802A
sc-200802B
sc-200802C
sc-200802D
sc-200802E
10 mg
50 mg
100 mg
500 mg
1 g
10 g
$43.00
$73.00
$126.00
$243.00
$530.00
$1259.00
11
(1)

EGCG inhibits several protein kinases and could lead to the reduced phosphorylation of competitive splicing factors, indirectly enhancing the splicing activity of FIR.

5-Azacytidine

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

5-Azacytidine is known to cause DNA demethylation, which can alter the expression pattern of various splicing factors, thereby possibly facilitating an environment where FIR activity is upregulated.

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 an inhibitor of histone deacetylases (HDACs), and by changing the chromatin structure, it could affect the recruitment of splicing factors including FIR to pre-mRNA.

Spermidine

124-20-9sc-215900
sc-215900B
sc-215900A
1 g
25 g
5 g
$57.00
$607.00
$176.00
(2)

Spermidine induces autophagy and can modulate post-translational modifications of splicing factors. This could indirectly increase FIR activity by optimizing splicing factor composition.

Amiloride

2609-46-3sc-337527
1 g
$296.00
7
(1)

Amiloride interferes with sodium channels, also affecting intracellular pH and calcium levels, which may indirectly enhance FIR activity by influencing the phosphorylation status of splicing factors.

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, as an HDAC inhibitor, can alter chromatin structure and potentially enhance FIR activity by affecting gene expression and subsequent splicing events.

LY 294002

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

LY294002 is a PI3K inhibitor that can modulate cellular signaling pathways, potentially creating a cellular milieu that favors FIR-mediated splicing activity.