| Steroid Biosynthesis |  | Metabolic | Cholecalciferol / ATP / Magnesium cation / Iron / Dimethylallyl Diphosphate / Formic acid / Geranyl Diphosphate / Mesoheme / Flavin adenine dinucleotide / Palmitic Acid / Pyrophosphoric acid / Cholesterol / ISOPENTENYL PYROPHOSPHATE / Farnesyl diphosphate |
| Steroidogenesis |  | Metabolic | NADH / Progesterone / Hydrocortisone / Mesoheme / Cholesterol / Corticosterone / 20-hydroxycholesterol |
| Stiripentol Drug Metabolism |  | Metabolic | Stiripentol |
| Stiripentol GABA(A) Antiepileptic Action Pathway |  | Drug Action | Pyridoxal phosphate / Glutamic acid / ATP / Calcium / Magnesium cation / Cyclic adenosine monophosphate / gamma-Aminobutyric acid / Mesoheme / Pyrophosphoric acid / Stiripentol |
| Streptokinase Action Pathway |  | Drug Action | Streptokinase / Phylloquinone / Calcium |
| Streptokinase Action Pathway (new) |  | Drug Action | Streptokinase / Calcium |
| Streptomycin Action Pathway |  | Drug Action | Streptomycin |
| Streptomycin Action Pathway (New) |  | Drug Action | Streptomycin |
| Streptomycin Tuberculosis Action Pathway |  | Drug Action | Sapropterin / Streptomycin / Mesoheme / Flavin adenine dinucleotide / Flavin mononucleotide |
| Streptozocin Drug Metabolism |  | Metabolic | Streptozocin |
| Striated Muscle Contraction |  | Physiological | ATP / Potassium cation / Calcium |
| Strontium ranelate Drug Metabolism |  | Metabolic | Strontium ranelate |
| Succinic Semialdehyde Dehydrogenase Deficiency |  | Disease | Pyridoxal phosphate / Pyruvic acid / Biotin / Aspartic acid / L-Glutamine / Adenosine phosphate / Succinic acid / Glutamic acid / Glutathione / Glycine / Cysteine / NADH / Alanine / ATP / Magnesium cation / Zinc / 5-O-phosphono-alpha-D-ribofuranosyl diphosphate / Guanosine-5'-Monophosphate / gamma-Aminobutyric acid / Oxogluric acid / Flavin adenine dinucleotide / gamma-Glutamylcysteine / Pyrophosphoric acid |
| Succinyl CoA: 3-Ketoacid CoA Transferase Deficiency |  | Disease | Succinic acid / NADH / Acetoacetic acid |
| Succinyl CoA: 3-Ketoacid CoA Transferase Deficiency |  | Disease | Succinic acid / NADH / Acetoacetic acid |
| Sucrase-Isomaltase Deficiency |  | Disease | Pyridoxal phosphate / NADH / ATP / Calcium / Magnesium cation / Uridine diphosphate glucose / Maltose / Uridine-5'-Diphosphate / Pyrophosphoric acid / Fructose |
| Sucrase-Isomaltase Deficiency |  | Disease | Pyridoxal phosphate / NADH / ATP / Calcium / Magnesium cation / Uridine diphosphate glucose / Maltose / Uridine-5'-Diphosphate / Pyrophosphoric acid / Fructose |
| Sufentanil Action Pathway |  | Drug Action | ATP / Norepinephrine / Sufentanil / Dopamine / Potassium cation / Calcium |
| Sufentanil Opioid Agonist Action Pathway |  | Drug Action | ATP / Sufentanil / Calcium / Magnesium cation / Cyclic adenosine monophosphate / gamma-Aminobutyric acid / Pyrophosphoric acid / Sar9, Met (O2)11-Substance P |
| Sulconazole Action Pathway |  | Drug Action | Formic acid / Mesoheme / Ergosterol / Sulconazole |
| Sulconazole Drug Metabolism |  | Metabolic | Sulconazole |
| Sulfabenzamide Drug Metabolism |  | Metabolic | Sulfabenzamide |
| Sulfacetamide Drug Metabolism |  | Metabolic | Sulfacetamide |
| Sulfadimethoxine Predicted Metabolism Pathway |  | Metabolic | Mesoheme / Sulfadimethoxine |
| Sulfadoxine Predicted Metabolism Pathway |  | Metabolic | Sulfadoxine / Mesoheme |