SERINC2 (Serine Incorporator 2): SERINC2 is a protein from the SERINC family that facilitates the incorporation of serine into membrane lipids, supporting the biosynthesis and stability of cellular membranes. It plays key roles in maintaining membrane fluidity, regulating signalling pathways, and contributing to immune function. By influencing membrane composition, SERINC2 affects cell proliferation, differentiation, and programmed cell death, making it essential for cellular health and physiological balance.