Recombinant human FASTK protein

Supplementary information

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

FASTK also known as Fas-activated serine/threonine kinase is an enzyme that functions primarily in the mitochondria of cells. This protein weighs approximately 65 kDa. FASTK is ubiquitously expressed in various tissues but it shows higher levels in heart and skeletal muscle. FASTK plays a role in RNA processing especially in regulating the stability of specific RNA molecules in mitochondria.

Biological function summary

FASTK associates with a larger protein complex involved in mitochondrial RNA surveillance. This complex targets and stabilizes mitochondrial transcripts important for mitochondrial protein synthesis. Through its RNA-binding capability FASTK influences the production of ATP by maintaining proper mitochondrial function and energy metabolism.

Pathways

FASTK operates within mitochondrial gene expression and oxidative phosphorylation pathways. It is associated with proteins like FASTKD2 and TFB2M which also participate in mitochondrial RNA processing and ribosome biogenesis. This interplay is essential for responding to cellular energy demands and maintaining cellular homeostasis.

Disruptions in FASTK activity relate to mitochondrial myopathy and neurodegenerative disorders such as Charcot-Marie-Tooth disease. Mutations in proteins like FASTKD2 and other mitochondrial RNA-binding proteins can influence these conditions highlighting the significance of FASTK in maintaining mitochondrial integrity.