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Which part of the two-component regulatory system becomes phosphorylated? What does this phosphorylation allow to happen in the cell?

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Final answer:

Phosphorylation occurs in the two-component regulatory system when IK-B, an inhibitor protein, gets phosphorylated, allowing NF-KB to enter the nucleus and initiate RNA transcription. This phosphorylation inactivates the inhibitor and activates gene transcription.

Step-by-step explanation:

Phosphorylation occurs in the two-component regulatory system when a protein becomes phosphorylated. Phosphorylation occurs in the two-component regulatory system when IK-B, an inhibitor protein, gets phosphorylated, allowing NF-KB to enter the nucleus and initiate RNA transcription. This phosphorylation inactivates the inhibitor and activates gene transcription.

In this system, the protein that gets phosphorylated is the inhibitor protein called IK-B. When IK-B is phosphorylated, it can no longer bind to the regulatory protein NF-KB. This allows NF-KB to enter the nucleus and initiate RNA transcription, activating the process of transcription. Phosphorylation of IK-B by protein kinase C (PKC) inactivates the inhibitor and enables the activation of gene transcription.

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