Enzyme Inhibition
Enzyme inhibition is a key regulatory mechanism and the basis for many pharmaceutical drugs, with reversible and irreversible inhibition strategies.
Enzymes Enzyme Mechanisms of Catalysis
Enzymes accelerate chemical reactions by lowering the activation energy through several catalytic strategies including acid-base, covalent, and metal-ion catalysis.
Enzymes Enzyme Regulation
Enzyme activity is regulated through multiple mechanisms including allosteric regulation, covalent modification, zymogen activation, and control of enzyme quantity.
Enzymes Cholesterol Metabolism
Cholesterol is an essential sterol that modulates membrane fluidity and serves as a precursor for bile acids, steroid hormones, and vitamin D.
Lipids Eicosanoids
Eicosanoids are signaling molecules derived from arachidonic acid that mediate inflammation, fever, pain, blood clotting, and smooth muscle contraction.
Lipids Lipid Structure and Classification
Lipids are a diverse group of hydrophobic or amphipathic molecules that serve as energy stores, structural components of membranes, and signaling molecules.
Lipids Lipoproteins and Lipid Transport
Lipoproteins are complexes of lipids and proteins that transport hydrophobic lipids through the aqueous environment of the bloodstream.
Lipids Membrane Lipids
Membrane lipids form the structural foundation of biological membranes, providing a selective barrier that defines cellular and organellar boundaries.
Lipids Phospholipid and Sphingolipid Metabolism
Phospholipids and sphingolipids are the major structural lipids of membranes, and their synthesis, degradation, and remodeling are tightly regulated.
Lipids
