Atlas One · Host Biology · Scale 03 — Molecular

Calcineurin

Calcineurin (PP2B) is a Ca²⁺/calmodulin-activated phosphatase; dephosphorylates NFAT → nuclear entry → IL-2, IL-4, IFN-γ transcription in T cells. Blocked by cyclosporine·cyclophilin-A and tacrolimus·FKBP12 complexes; voclosporin FDA 2021 for lupus nephritis.

Also known as: calcineurin, PP2B, protein phosphatase 2B, PPP3CA, PPP3CB, calcineurin-NFAT, NFAT signaling, calcineurin inhibitor, CNI, cyclosporine target, tacrolimus target, FK506 target

Scale 03 — MolecularScale
draftStatus
2026-06-07Last Reviewed
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calcineurin

Calcineurin

Calcineurin (PP2B) is a Ca²⁺/calmodulin-activated phosphatase; dephosphorylates NFAT → nuclear entry → IL-2, IL-4, IFN-γ transcription in T cells. Blocked by cyclosporine·cyclophilin-A and tacrolimus·FKBP12 complexes; voclosporin FDA 2021 for lupus nephritis.