Characterization of Golgi scaffold proteins and their roles in compartmentalizing cell signaling

Journal of Molecular Histology
Wenna PengZhiping Hu

Abstract

Subcellular compartmentalization has become an important theme in cell signaling. In particular, the Golgi apparatus (GA) plays a prominent role in compartmentalizing signaling cascades that originate at the plasma membrane or other organelles. To precisely regulate this process, cells have evolved a unique class of organizer proteins, termed "scaffold proteins". Sef, PAQR3, PAQR10 and PAQR11 are scaffold proteins that have recently been identified on the GA and are referred to as Golgi scaffolds. The major cell growth signaling pathways, such as Ras/MAPK, PI3K/AKT, insulin and VEGF (vascular endothelial growth factor), are tightly regulated spatially and temporally by these Golgi scaffolds to ensure a physiologically appropriate outcome. Here, we discuss the subcellular localization and characterization of the topology and functional domains of these Golgi scaffolds and summarize their roles in the compartmentalization of cell signaling. We also highlight the physiological and pathological roles of these Golgi scaffolds in tumorigenesis and developmental disorders.

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Citations

Oct 1, 2016·Genetics, Selection, Evolution : GSE·Androniki PsifidiPete Kaiser
Nov 22, 2016·The Journal of Clinical Investigation·Xiaochao TanJonathan M Kurie
Nov 6, 2015·American Journal of Physiology. Regulatory, Integrative and Comparative Physiology·Nicholas H McCormickShannon L Kelleher

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