Date published: 2026-3-17

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PPIL4 Activators

Chemical activators of PPIL4 can engage in various interactions to facilitate the protein's peptidyl-prolyl isomerase activity, which is central to its role in protein folding. Cyclosporin A, Alisporivir, and Sanglifehrin A, by virtue of their affinity for cyclophilins, can bind to PPIL4. This binding can activate PPIL4's isomerase activity, as these chemicals are known to interact with and activate proteins that share functional similarities with PPIL4. Similarly, FK506 and Rapamycin, which target the FKBP family of proteins, can bind to and activate PPIL4 due to the structural and functional parallels between these proteins. This activation can enhance the protein's ability to assist in the proper folding and function of other cellular proteins.

Further, chemicals like Meleagrin, though not directly linked to the cyclophilin family, can still activate PPIL4 through their known interactions with cyclophilins, suggesting a possible overlap in binding and activation mechanisms. Quercetin, through its capacity to influence protein-protein interactions, can engage PPIL4 in a manner that promotes its interaction with substrate proteins. Geldanamycin and Withaferin A, by affecting the protein chaperone network, can create a demand for PPIL4 activity, thereby activating it to maintain protein homeostasis. Moreover, Ribociclib's role in cell cycle progression can necessitate an increase in PPIL4 activity, as proper protein folding is crucial during cell division. Lastly, Epigallocatechin gallate's influence on the proteostasis network can activate PPIL4, ensuring that its isomerization function is available to assist in the complex process of protein folding and maintenance within the cell.

SEE ALSO...

Product NameCAS #Catalog #QUANTITYPriceCitationsRATING

Cyclosporin A

59865-13-3sc-3503
sc-3503-CW
sc-3503A
sc-3503B
sc-3503C
sc-3503D
100 mg
100 mg
500 mg
10 g
25 g
100 g
$63.00
$92.00
$250.00
$485.00
$1035.00
$2141.00
69
(5)

Cyclosporin A binds to cyclophilins and inhibits their peptidyl-prolyl isomerase activity. Because PPIL4 has peptidyl-prolyl isomerase activity, Cyclosporin A binding to PPIL4 would result in activation of its isomerase activity by preventing its inhibition.

FK-506

104987-11-3sc-24649
sc-24649A
5 mg
10 mg
$78.00
$151.00
9
(1)

FK506 binds to FK-binding proteins (FKBP) family, which shares the peptidyl-prolyl isomerase activity with PPIL4. The binding to similar proteins suggests that FK506 could bind to PPIL4, enhancing its protein folding activity within cellular pathways.

Rapamycin

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

Rapamycin binds to FKBP12, a member of the FKBP family with similarities to PPIL4. Its binding could suggest an activation potential for PPIL4, promoting its role in protein folding and maturation.

Ribociclib

1211441-98-3sc-507367
10 mg
$450.00
(0)

Ribociclib, a cyclin-dependent kinase inhibitor, can alter cell cycle progression. By affecting the cell cycle, it could increase the demand for PPIL4 activity in protein folding necessary for cell cycle progression.

Quercetin

117-39-5sc-206089
sc-206089A
sc-206089E
sc-206089C
sc-206089D
sc-206089B
100 mg
500 mg
100 g
250 g
1 kg
25 g
$11.00
$17.00
$110.00
$250.00
$936.00
$50.00
33
(2)

Quercetin, a flavonoid with various cellular effects, can also influence protein-protein interactions. It could activate PPIL4 by promoting its interaction with substrates or other proteins requiring isomerization.

Geldanamycin

30562-34-6sc-200617B
sc-200617C
sc-200617
sc-200617A
100 µg
500 µg
1 mg
5 mg
$39.00
$59.00
$104.00
$206.00
8
(1)

Geldanamycin binds to Hsp90, affecting its function. By altering the chaperone network, it could create a cellular environment where PPIL4 activity is upregulated to meet increased protein folding demands.

Withaferin A

5119-48-2sc-200381
sc-200381A
sc-200381B
sc-200381C
1 mg
10 mg
100 mg
1 g
$130.00
$583.00
$4172.00
$20506.00
20
(1)

Withaferin A disrupts proteasomal activity, potentially leading to increased misfolded protein levels. This could activate PPIL4 as a compensatory mechanism to aid in refolding proteins.

(−)-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)

Epigallocatechin gallate has been shown to influence the folding of specific proteins. It could activate PPIL4 by altering the proteostasis network, thus enhancing the protein's isomerization and folding functions.