Negative regulatory molecules are substances that inhibit gene expression or protein synthesis, acting as a control mechanism in cellular functions.
Imagine negative regulatory molecules as traffic lights. When they turn red, they stop the flow of cars (gene expression or protein synthesis), ensuring order and preventing chaos on the roads.
Repressors: These are proteins that suppress the transcription of a gene. They're like red traffic lights stopping vehicles from moving forward.
Inducers: These are molecules that start gene expression. They act like green traffic lights signaling cars to go ahead.
Co-repressors: These are proteins that can increase the activity of repressors. They work similarly to additional traffic signs supporting the main signal given by a red light.
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