14-3-3 Proteins: A Number of Functions for a Numbered Protein

作者：Dave Bridges, Greg B. G. Moorhead · 发表于：Science s STKE · 年份：2004 · DOI：10.1126/stke.2422004re10 · 被引用次数：339 · 研究领域：14-3-3 protein interactions、Ubiquitin and proteasome pathways、Microbial Natural Products and Biosynthesis

Many signal transduction events are orchestrated by specific interactions of proteins mediated through discrete phosphopeptide-binding motifs. Although several phosphospecific-binding domains are now known, 14-3-3s were the first proteins recognized to specifically bind a discrete phosphoserine or phosphothreonine motif. The 14-3-3 proteins are a family of ubiquitously expressed, exclusively eukaryotic proteins with an astonishingly large number of binding partners. Consequently, 14-3-3s modulate an enormous and diverse group of cellular processes. The effects of 14-3-3 proteins on their targets can be broadly defined using three categories: (i) conformational change; (ii) physical occlusion of sequence-specific or structural protein features; and (iii) scaffolding. This review will describe the current state of knowledge on 14-3-3 proteins, highlighting several important advances, and will attempt to provide a framework by which 14-3-3 functions can be understood.