You have a cell signaling cascade in which a cell signal initially targets and activates protein 1 which in turn activates protein 2 which then activates protein 3 and finally activates protein 4. You are given a cell line that never expresses protein 2, yet in every experiment in which you give the initiating signal, you get activation of protein 4. How could you explain these results?

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The Answer of You have a cell signaling cascade in which a cell signal initially targets and activates protein 1 which in turn activates protein 2 which then activates protein 3 and finally activates protein 4. You are given a cell line that never expresses protein 2, yet in every experiment in which you give the initiating signal, you get activation of protein 4. How could you explain these results?

You Have a Cell Signaling Cascade in Which a Cell