14-3-3 protein eta (YWHAH)

14-3-3 protein eta (YWHAH) is a member of a highly conserved family of adapter proteins that function as molecular scaffolds, regulating a wide array of cellular processes by binding to phosphorylated motifs on client proteins. It plays a critical role in signal transduction, cell cycle control, and apoptosis by modulating the activity, stability, and subcellular localization of its binding partners. In clinical practice, 14-3-3 eta is a prominent biomarker for rheumatoid arthritis (RA), where its extracellular release into the serum and synovial fluid acts as a pro-inflammatory ligand that drives joint erosion and disease progression. Beyond inflammation, the protein is implicated in the pathogenesis of various cancers and neurodegenerative diseases, including Alzheimer's and Parkinson's, due to its interactions with proteins like Tau and LRRK2. Therapeutic strategies targeting 14-3-3 eta focus on the development of small-molecule inhibitors or stabilizers (molecular glues) to modulate specific protein-protein interactions, offering a novel approach to treating complex signaling-driven disorders.

Other names

YWHAH14-3-3 etaTyrosine 3-monooxygenase/tryptophan 5-monooxygenase activation protein etaProtein AS1YWHA1

Modulation of protein-protein interactions (PPIs) through stabilization (molecular glue) or inhibition of binding between 14-3-3 and its phosphorylated client proteins, thereby altering client activity, localization, or stability.