What is the role of DAG in calcium-responsive signaling pathways?

• A. DAG directly binds to calcium ions to facilitate signaling.
• B. DAG is a calcium ion carrier that transports calcium across the cell membrane.
• C. DAG activates protein kinase C, which then phosphorylates proteins involved in calcium signaling.
• D. DAG inhibits protein kinase C, reducing calcium signaling.

Answer: (C)