Book excerpt: 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