1. Signaling Pathways
  2. Apoptosis
  3. FKBP


FKBP (FK506-binding protein) is one of two major immunophilins and most of FKBP family members bind FK506 and show peptidylprolyl cis/trans isomerase (PPIase) activity. Small size FKBP family members contain only FK506-binding domain, while FKBPs with large molecular weights possess extra domains such as tetratricopeptide repeat domains, calmodulin binding and transmembrane motifs. FKBPs are involved in several biochemical processes including protein folding, receptor signaling, protein trafficking and transcription. FKBP family proteins play important functional roles in the T-cell activation, when complexed with their ligands.

FK506-binding proteins 1a and 1b (FKBP1a/1b) are immunophilin proteins that bind the immunosuppressant agent FK506 and AY 22989. FKBP12 is a ubiquitous abundant protein that acts as a receptor for FK506, binds tightly to intracellular calcium release channels and to the transforming growth factor β (TGF-β) type I receptor.

FKBP Related Products (23):

Cat. No. Product Name Effect Purity
  • HY-10219
    Rapamycin 99.94%
    Rapamycin (Sirolimus; AY 22989) is a potent and specific mTOR inhibitor with an IC50 of 0.1 nM in HEK293 cells. Rapamycin binds to FKBP12 and specifically acts as an allosteric inhibitor of mTORC1. Rapamycin is an autophagy activator, an immunosuppressant.
  • HY-10218
    Everolimus 98.79%
    Everolimus (RAD001) is a Rapamycin derivative and a potent, selective and orally active mTOR1 inhibitor. Everolimus binds to FKBP-12 to generate an immunosuppressive complex. Everolimus inhibits tumor cells proliferation and induces cell apoptosis and autophagy. Everolimus has potent immunosuppressive and anticancer activities.
  • HY-13756
    Tacrolimus 99.93%
    Tacrolimus (FK506), a macrocyclic lactone, binds to FK506 binding protein (FKBP) to form a complex. Tacrolimus inhibits calcineurin phosphatase, which inhibits T-lymphocyte signal transduction and IL-2 transcription. Immunosuppressive properties.
  • HY-16046
    Rimiducid Activator 99.81%
    Rimiducid (AP1903) is a dimerizer agent that acts by cross-linking the FKBP domains. Rimiducid (AP1903) dimerizes the Caspase 9 suicide switch and rapidly induces apoptosis.
  • HY-13992
    AP20187 Modulator 99.80%
    AP20187 (B/B Homodimerizer) is a cell-permeable ligand used to dimerize FK506-binding protein (FKBP) fusion proteins and initiate biological signaling cascades and gene expression or disrupt protein-protein interactions.
  • HY-129610
    KB02-SLF Inhibitor
    KB02-SLF is a PROTAC-based nuclear FKBP12 degrader (molecular glue). KB02-SLF promotes nuclear FKBP12 degradation by covalently modifying DCAF16 (E3 ligase) and can improve the durability of protein degradation in biological systems. SLF binds ubiquitin E3 ligase ligand KB02 via a linker to form KB02-SLF.
  • HY-123454
    SKF1 Inhibitor
    SKF1 is a FK506 suppressor, causes a mitochondrially induced death in low salt, concomitant with the release of reactive oxygen species (ROS).
  • HY-112210
    Shield-1 Modulator 99.62%
    Shield-1 is a specific, cell-permeant and high-affinity ligand of FK506-binding protein-12 (FKBP), and reverses the instability by binding to mutated FKBP (mtFKBP), allowing conditional expression of mtFKBP-fused proteins. Shield-1 can stabilize the entire fusion protein.
  • HY-13557
    Ascomycin Inhibitor >98.0%
    Ascomycin(Immunomycin, FR-900520, FK520) is an ethyl analog of tacrolimus (FK506) with strong immunosuppressant properties.
  • HY-13756A
    Tacrolimus monohydrate 98.46%
    Tacrolimus monohydrate (FK506 monohydrate), a macrocyclic lactone, binds to FK506 binding protein (FKBP) to form a complex and inhibits calcineurin phosphatase, which inhibits T-lymphocyte signal transduction and IL-2 transcription. Immunosuppressive properties.
  • HY-102080
    SAFit2 Inhibitor 98.59%
    SAFit2 is a highly potent, highly selective FK506-binding protein 51 (FKBP51) inhibitor with a Ki of 6 nM and also enhances AKT2-AS160 binding.
  • HY-114434
    AP1867 98.46%
    AP1867 is a synthetic FKBP12F36V-directed ligand.
  • HY-103634
    dFKBP-1 Inhibitor 98.84%
    dFKBP-1 is a potent and PROTAC-based FKBP12 degrader. dFKBP-1 incorporates the ligand SLF (HY-114872) of FKBP12, the Thalidomide based cereblon ligand and a linker.
  • HY-114421
    FKBP12 PROTAC dTAG-13 Inhibitor >98.0%
    FKBP12 PROTAC dTAG-13 (dTAG-13) is a PROTAC-based heterobifunctional degrader. FKBP12 PROTAC dTAG-13 (dTAG-13) is a degrader of FKBP12F36V with expression of FKBP12F36V in-frame with a protein of interest. FKBP12 PROTAC dTAG-13 (dTAG-13) also is a selective degrader of BET bromodomain transcriptional co-activator BRD4 by bridging BET bromodomains to an E3 ubiquitin ligase CRBN.
  • HY-102079
    SAFit1 Inhibitor 99.99%
    SAFit1 is a FK506 binding protein 51 (FKBP51)-specific inhibitor with a Ki of 4±0.3 nM.
  • HY-135345
    PROTAC FKBP Degrader-3 98.73%
    PROTAC FKBP Degrader-3 is a PROTAC that comprises a FKBP ligand binding group, a linker and an VHL binding group. PROTAC FKBP Degrader-3 is a potent FKBP degrader.
  • HY-130835
    FKBP12 PROTAC RC32 (RC32) is a potent FKBP12 degrader based on PROTAC technology. FKBP12 PROTAC RC32 contains conjugation of Rapamycin (HY-10219) and a ligand for an E3 ubiquitin ligase (Pomalidomide; HY-10984).
  • HY-114872
    SLF 98.60%
    SLF is a synthetic ligand for FK506-binding protein (FKBP) with an affinity of 3.1 μM for FKBP51 and an IC50 of 0.22 μM for FKBP12. SLF can be used in the synthesis of PROTAC.
  • HY-107452
    SLF-amido-C2-COOH 98.82%
    SLF-amido-C2-COOH (PROTAC FKBP12-binding moiety 1) is a synthetic ligand for FKBP (SLF). SLF-amido-C2-COOH (PROTAC FKBP12-binding moiety 1) can be used in the synthesis of PROTACs.
  • HY-124619
    GPI-1046 99.43%
    GPI-1046 is a immunophilin ligand without antibiotic action and attenuates ethanol intake in part through the upregulation of glutamate transporter 1 (GLT1) in PFC and NAc-core. GPI-1046 is an analog of FK506, which is an immunophilin ligand that has been shown neuroprotective effects in neurodegenerative disease models. GPI-1046 readily crosses the blood-brain barrier and promotes the regeneration of dopamine (DA) cells in the CNS in association with functional recovery in rodent models. GPI-1046 improves HIV-associated injury of peripheral nerves.
Isoform Specific Products

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