This volume contains eight chapters that present both new and reviewed information fundamental to a clear understanding of lipid catabolism and transport at the molecular level. Three-dimensional structures of important serum lipoproteins, apolipoproteins, and lipases, utilizing X-ray data when available, are emphasized, and an attempt is made to relate structures to function. - Amphipathic helix- Apolipoprotein E- Lipophorin- Structure of serum albumin- Lipid binding proteins- Apolipoprotein B- Low-density lipoprotein