1 Pour over Tuna Steaks and marinade 20 minutes, turning occasionally. 2  Make sure grill is hot â place steaks in hottest section and Sear steaks 1 to 2 minutes per side to seal in the juices. 3  Finish cooking just slightly away from the hottest area â 8 to 10 minutes per inch of thickness.
The FcRI complex forms a high-affinity cell-surface receptor for the Fc region of antigen-specific immunoglobulin E (IgE) molecules. FcRI is multimeric and is a member of a family of related antigen/Fc receptors which have conserved structural features and similar roles in initiating intracellular signalling cascades.
G-protein-coupled receptors (GPCRâs): these are the largest of all the cell surface receptors. They activate membrane-bound, trimeric GTP binding proteins (G-proteins) which then activate either an enzyme or an ion channel (effector) in the plasma membrane, initiating a sequence of other effects.ell surface receptors are responsible for the binding of an extracellular signalling molecule and transduction of its messages into one or more intracellular signalling molecules, which changes the cellâs behaviour. A cell surface receptor exists intrinsically embedded in the plasma membrane.