| Compound | Description |
|---|
| urea | A compound formed in the liver from ammonia produced by the deamination of amino acids. It is the principal end product of protein catabolism and constitutes about one half of the total urinary solids. |
| Arginine | An essential amino acid that is physiologically active in the L-form. |
| ammonium hydroxide | The hydroxy salt of ammonium ion. It is formed when AMMONIA reacts with water molecules in solution. |
| NADH | |
| ornithine | An amino acid produced in the urea cycle by the splitting off of urea from arginine. |
| Water | A clear, odorless, tasteless liquid that is essential for most animal and plant life and is an excellent solvent for many substances. The chemical formula is hydrogen oxide (H2O). (McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed) |
| delta-1-pyrroline-5-carboxylate | (L)-isomer is the biologically active form; RN given refers to cpd without isomeric designation; structure |
| alpha-Ketoglutarate | |
| glutamic acid gamma-semialdehyde | straight-chain form of delta(1)-pyrroline-5-carboxylate; RN given refers to cpd with unspecified isomeric designation |
| glutamate | |
| Hydrogen | The first chemical element in the periodic table with atomic symbol H, and atomic number 1. Protium (atomic weight 1) is by far the most common hydrogen isotope. Hydrogen also exists as the stable isotope DEUTERIUM (atomic weight 2) and the radioactive isotope TRITIUM (atomic weight 3). Hydrogen forms into a diatomic molecule at room temperature and appears as a highly flammable colorless and odorless gas. |
| NAD | A coenzyme composed of ribosylnicotinamide 5'-diphosphate coupled to adenosine 5'-phosphate by pyrophosphate linkage. It is found widely in nature and is involved in numerous enzymatic reactions in which it serves as an electron carrier by being alternately oxidized (NAD+) and reduced (NADH). (Dorland, 27th ed) |