14-3-3 Protein

14-3-3 proteins are conserved eukaryotic scaffolding proteins that primarily regulate target-protein function through phosphorylation-dependent binding^[1]. Mechanistically, 14-3-3 recognizes phosphoserine-binding motifs and connects protein kinase signaling to protein-complex assembly, localization, and activity control^[2][3]. Therefore, 14-3-3 participates in cell-cycle control, apoptosis, signal transduction, energy metabolism, and protein trafficking^[1][4]. In disease models, the 14-3-3 interaction network regulates cancer-relevant apoptosis, cell-cycle progression, autophagy, glucose metabolism, and cell motility^[5]. Compared with broadly expressed 14-3-3β, γ, ε, ζ, η, and τ, 14-3-3σ shows stronger relevance to cell-cycle and tumor-suppressor biology in cancer research^[4][6]. 14-3-3η also acts as a serum biomarker in rheumatoid arthritis by complementing RF and ACPA testing and associating with worse disease^[7]. For experimental applications, small-molecule modulators of 14-3-3 proteins support studies of protein interactions, cell cycle, apoptosis, and disease-linked signaling pathways^[8].14-3-3 proteins connect phosphorylation-dependent binding with cell-cycle, apoptosis, metabolism, and trafficking research.
Isoform-focused studies distinguish 14-3-3σ cancer biology from 14-3-3η rheumatoid arthritis biomarkers.
14-3-3 modulators enable protein-protein interaction, signaling pathway, and disease model experiments.