The Role of Phospholipase Cβ on the Plasma Membrane and Cytosol: How Modular Domains Enable Novel Functions

Publication date: Available online 29 July 2019Source: Advances in Biological RegulationAuthor(s): Suzanne ScarlataAbstractPhospholipase Cβ (PLCβ) is a signaling enzyme activated by G proteins to generate calcium signals. The catalytic core of PLCβ is surrounded by modular domains that mediate the interaction of the enzyme with known protein partners on the plasma membrane. The C-terminal region PLCβ contains a novel coiled-coil domain that is required for Gαq binding and activation. Recent work has shown that this domain also binds a number of cytosolic proteins that regulate protein translation, and that these proteins compete with Gαq for PLCβ binding. The ability of PLCβ to shuttle between the cytosol to impact protein translation and the plasma membrane to mediate calcium signals puts PLCβ in a central role in cell function.

Source: Advances in Biological Regulation - July 30, 2019 Category: Biology Source Type: research