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receptor proteins bind to signal molecules
shape.
When a receptor protein acts as an enzyme, the receptor protein activates a second messenger that acts as a signal molecule within the cell. Resources: HOLT Biology Textbook - 9th grade edition Chapter 4, Cells and Their Environment.
G-protein-linked receptor
When the signal molecule changes the receptor protein in some way.
Due to a conformational change of the receptor protein....
because every receptor has specific shape on it, which binds with specific molecule.
Intracellular receptor
Signal Transduction
Depending on what harmone it is, the hormone will attach to the receptor protein if the shape of the hormone and the receptor protein correspond.
when a signal molecule fits the shape of the receptor
Yes, it can a gated ion channel is opened when a signal molecule binds to a receptor protein causing the receptor protein to open the ion channel through the cell membrane and after this process the ion channel is closed once again to prevent various molecules to enter the cell.