Phosphatidylserine

Constitutes a crucial phospholipid typically located on the inner leaflet of the cell membrane, but translocates to the outer leaflet during apoptosis, signaling for phagocytosis.

Key Functions:

• Plays a vital role in blood coagulation as a cofactor for clotting factors.
• Involved in cell signaling, neuronal excitability, and memory function.
• Acts as an 'eat me' signal for apoptotic cells.

Interacting Systems & Components:

• Cell Membrane (component of)
• Apoptotic Cells (exposed on surface)
• Coagulation Factors (cofactor for)
• Neurons (involved in function)
• Phagocytes (recognize and engulf)