PLTP (Phospholipid Transfer Protein): PLTP is a protein that plays a key role in lipid metabolism and transport in the body. It facilitates the transfer of phospholipids between different lipoprotein particles, helping to regulate their composition and function. PLTP is important for maintaining plasma lipoprotein balance, influencing the size, composition, and functionality of HDL and LDL particles, and supporting processes such as reverse cholesterol transport.