Recombinant Human Calcineurin inhibitor protein (GST tag N-Terminus)

Supplementary information

This supplementary information is collated from multiple sources and compiled automatically.

Calcineurin inhibitors including popular agents like cyclosporine and tacrolimus target the calcineurin protein phosphatase. Calcineurin consists of a catalytic subunit and a regulatory subunit with a total mass of about 74 kDa. This phosphatase is expressed in many tissues but prominently in the brain heart and immune cells. Calcineurin as a calmodulin-dependent protein phosphatase facilitates the dephosphorylation of target proteins which influences the cellular response to calcium signals.

Biological function summary

Calcineurin plays an important role in transducing calcium signals that initiate the NFAT (nuclear factor of activated T-cells) pathway. It functions as part of a complex in which the activated phosphatase dephosphorylates NFAT proteins. This dephosphorylation allows NFAT to enter the nucleus and activate genes involved in immune response regulation. Calcineurin's activity therefore links extracellular calcium fluctuations to genetic responses by transcription factors.

Pathways

Calcineurin connects with signaling pathways involving T-cell activation and cardiac hypertrophy. The NFAT pathway is critical for T-cell responses linking calcineurin to immune system modulation. In cardiac cells calcineurin influences hypertrophic signaling interacting with proteins such as CaMKII and MEF2 that are central to heart cell growth. These pathways highlight how calcineurin couples calcium-mediated signals to broader physiological effects.

Calcineurin's modulation of the immune system and heart function relates to immunosuppression in organ transplantation and cardiac hypertrophy. Calcineurin inhibitors use these pathways to prevent organ transplant rejection by dampening the immune response. Moreover heightened calcineurin activity associates with heart disease pathways such as hypertrophy through interaction with NFAT and other signaling proteins. These links show the importance of targeting calcineurin in therapeutic strategies against immune and cardiovascular conditions.