Intracellular receptors are proteins located inside cells that bind to specific molecules, such as hormones or other signaling compounds. These receptors play a crucial role in cellular communication by detecting signals that can influence gene expression and cellular activity. When a signaling molecule enters the cell and attaches to an intracellular receptor, it often triggers a series of biochemical events that lead to a response. These receptors are typically found in the cytoplasm or nucleus of the cell. Unlike membrane receptors, which are located on the cell surface, intracellular receptors can directly interact with DNA to regulate the transcription of specific genes. This process allows cells to respond to changes in their environment effectively.