Nitrogen Metabolism

• Overview -HERE
• Nitrogenase Reaction - HERE
• Nitrogen fixation
• Regulation of glutamine synthetase - HERE
• Glutamate/glutamine synthesis - HERE
• Amino acid synthesis
  • Glutamate family - HERE
  • Aspartate family - HERE
  • Serine family - HERE
  • Pyruvate family - HERE
  • Aromatic family - HERE
  • Histidine family - HERE
• Relation to citric acid cycle - HERE
• Pyridoxal phosphate and transamination - HERE
• Synthesis of serine - HERE
• Folic acid metabolism and sulfa drugs - HERE
• Conversion of serine to glycine - HERE
• Synthesis of cysteine in plants and bacteria - HERE
• Sulfur and electron transfer in plants and bacteria - HERE
• SAM - HERE
• Essential amino acids -TABLE
• Amino acid catabolism - TABLE
• Nitrogen products of catabolism - HERE
• Catabolism of uric acid - HERE
• Urea cycle - HERE

Purine Metabolism

• Biosynthesis
  • Atomic origins - HERE
  • AMP and GMP synthesis from IMP -HERE
  • Overview/Regulation of purine biosynthesis - HERE
• Catabolism - HERE
• Salvage - HERE / HERE (Lesch-Nyhan syndrome)

Pyrimidine Metabolism

• Biosynthesis
  • Pathway - HERE/ HERE / HERE
  • Regulation of biosynthesis - HERE
• Catabolism - HERE

Deoxyribonucleotide Synthesis

• Ribonucleotide reductase -HERE
• Synthesis of thymidine nucleotides HERE
  • Thymidylate synthase reaction - HERE