Diagram of steps in Krebs' tricarboxylic acid cycle, with 3D presentation dependent on Chime plug-in, from student at University of North Texas.

Overview of the biology, enzymology, and structure of cytochrome P450 reductase, an unusual electron transfer flavoprotein.

Discusses the conversion of glucose and other monosaccharids to lactate or other biproducts, depending on the organism. Includes an advertisement for the webmaster's book.

Database that describes the genome and the biochemical machinery of E. coli, maintained by SRI International, Menlo Park, CA.

Digitized version of wall charts courtesy Boehringer Mannheim et al, divided into Metabolic Pathways and Cellular and Molecular Processes, maintained by the Swiss Institute of Bioinformatics, Geneva, Switzerland.

A survey of human metabolism, written for undergraduates in the Health Sciences from a chemist's point of view. Includes profile of author at University of Oporto, Portugal.

Chapter from the biology hypertext book at MIT, Cambridge, MA.

Graphical and hypertext-based information on biochemical pathways, including metabolic and regulatory pathways (for instance, cell cycle and growth factor signaling).

Studies on squalene monooxygenase dependent cholesterol biosynthesis, and the role of cytochrome P450 reductase as the electron transfer partner, by Todd D. Porter's group at the College of Pharmacy, Lexington, KY.

Searches on metabolites from carbohydrate, amino acid, fatty acid, nucleotide or other biochemical metabolism, including descriptions of the chemistry and function of biochemicals.

IUBMB-Nicholson chart illustrating glycolytic pathway, Krebs Cycle, and over 500 enzyme reactions, with formulas, substrates, inhibitors and EC numbers. Available as PDF download, or to purchase from Sigma Chemical Co., St.Louis, MO.

Graphical representation of metabolic pathways that are crucial to human metabolism, including 3D depictions from the George Washington University, Washington, DC.

Non-profit organization dedicated to the study of plant anatomy and physiology, established by Dr. Jim Bidlack, Edmond, OK.

Description of over 450 metabolic pathways and their associated enzymes, from over 150 organisms maintained by SRI International, Menlo Park, CA.

Links to enzyme, metabolic and signaling pathways databases from the Bioinformatics Unit at Weizmann Institute of Science, Israel.

Metabolic pathway analysis webservice, including shortest, alternate path and network analysis from Cologne University Bioinformatics Center, Germany.

Protein degradation resource.

The Ubiquitin System for protein modification and degradation.

Microbial enzyme-catalyzed reactions and compounds, FAQ and related resources at the University of Minnesota.