Date published: 2026-4-23

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FKBP12 Inhibitors

FKBP12 inhibitors belong to a class of small organic molecules that are primarily characterized by their ability to bind to and modulate the activity of FK506-binding protein 12 (FKBP12). FKBP12 is a highly conserved protein that plays a crucial role as a peptidyl-prolyl cis-trans isomerase (PPIase), an enzyme responsible for catalyzing the interconversion of cis and trans peptide bonds in proteins. The FKBP12 inhibitors interact with the active site of FKBP12, leading to the alteration of its conformation and subsequently influencing its functional capabilities. This class of inhibitors encompasses a diverse range of chemical structures, including macrocyclic lactones, macrolides, and synthetic small molecules. Structurally, FKBP12 inhibitors often feature distinct pharmacophores that facilitate their binding to the active site of FKBP12. The interactions between these inhibitors and the protein involve key amino acid residues, particularly those located near the active site's pocket. By binding to FKBP12, these inhibitors disrupt its PPIase activity and can lead to downstream effects on cellular processes that involve FKBP12, which are not the focus of this description. The affinity and specificity of FKBP12 inhibitors for the protein's active site can vary significantly based on their chemical structure, with some inhibitors achieving highly selective binding. The significance of FKBP12 inhibitors lies in their ability to selectively modulate the function of FKBP12, and their structural diversity allows for the exploration of various binding interactions and functional outcomes. The class of FKBP12 inhibitors has attracted attention for their applications, though not discussed here, in various fields due to their capacity to perturb FKBP12-related processes in a controlled manner. As research progresses, a deeper understanding of the structural-activity relationships within this class will likely facilitate the design and development of more potent and selective FKBP12 inhibitors, opening up new avenues for biological investigation and applications in diverse areas, which are beyond the scope of this description.
Product NameCAS #Catalog #QUANTITYPriceCitationsRATING

Cycloheximide

66-81-9sc-3508B
sc-3508
sc-3508A
100 mg
1 g
5 g
$41.00
$84.00
$275.00
127
(6)

Cycloheximide is a potent inhibitor of protein synthesis, specifically targeting the eukaryotic ribosome. Its unique interaction with the ribosomal peptidyl transferase center disrupts the elongation phase of translation, leading to the stalling of polypeptide chains. This compound exhibits distinct kinetics, with a rapid onset of action that can significantly alter cellular protein profiles. Cycloheximide's ability to modulate gene expression and cellular responses makes it a critical tool in studying translational regulation and cellular stress responses.

Everolimus-d4

1338452-54-2sc-218453
1 mg
$439.00
2
(1)

Everolimus-d4 is a selective inhibitor that binds to the FKBP12 protein, forming a complex that modulates mTOR signaling pathways. This interaction alters downstream signaling cascades, influencing cellular growth and metabolism. The compound exhibits unique isotopic labeling properties, allowing for precise tracking in metabolic studies. Its distinct kinetic profile enables nuanced exploration of cellular responses, providing insights into regulatory mechanisms at the molecular level.

Cycloheximide-N-ethylethanoate

sc-221447
sc-221447A
10 mg
50 mg
$165.00
$353.00
(0)

Cycloheximide-N-ethylethanoate interacts with FKBP12, facilitating the modulation of protein synthesis by inhibiting eukaryotic translation elongation. This compound exhibits unique binding dynamics, influencing ribosomal activity and altering the kinetics of peptide chain elongation. Its structural characteristics allow for specific interactions with the ribosome, providing insights into translational control mechanisms. The compound's behavior as an acid halide enhances its reactivity, enabling diverse applications in biochemical research.

Zotarolimus

221877-54-9sc-213188
1 mg
$240.00
(0)

Zotarolimus is a potent inhibitor that binds to FKBP12, disrupting the mTOR signaling pathway. Its unique molecular structure allows for selective interactions with the FKBP12 protein, influencing downstream cellular processes. The compound exhibits distinct reaction kinetics, characterized by rapid binding and a prolonged inhibitory effect. This behavior highlights its role in modulating cellular responses, providing a deeper understanding of regulatory mechanisms in cellular biology.

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)

Cyclosporine A is another prominent FKBP12 inhibitor. Like tacrolimus, it functions as an immunosuppressant, interfering with calcineurin activity and dampening T-cell activation.

Rapamycin

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

Rapamycin, or sirolimus, forms a complex with FKBP12 that hinders the mTOR pathway.

Everolimus

159351-69-6sc-218452
sc-218452A
5 mg
50 mg
$131.00
$651.00
7
(1)

Everolimus is structurally akin to rapamycin and similarly partners with FKBP12 to impede mTOR

W-7

61714-27-0sc-201501
sc-201501A
sc-201501B
50 mg
100 mg
1 g
$166.00
$306.00
$1675.00
18
(1)

W-7, a calcium-calmodulin-dependent protein kinase II (CaMKII) inhibitor, interacts with FKBPResearch has explored its effects on neuronal signaling and potential for neuroprotection.

SC1 (Pluripotin)

839707-37-8sc-255607
sc-255607A
sc-255607B
sc-255607C
1 mg
5 mg
10 mg
25 mg
$167.00
$199.00
$473.00
$779.00
(1)

SC1 disrupts the interaction between FKBP12 and presenilin 1 (PS1), linked to Alzheimer's disease.

FK-506

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

This synthetic derivative of tacrolimus retains FKBP12 binding but exhibits reduced immunosuppression. It has potential for modulating FKBP12-related pathways.