| Selenocysteine lyase | Humans | Catalyzes the decomposition of L-selenocysteine to L-alanine and elemental selenium | 2 | Details |
| Selenoprotein P | Humans | Might be responsible for some of the extracellular antioxidant defense properties of selenium or might be involved in... more | 5 | Details |
| Semaphorin-4D | Humans | Cell surface receptor for PLXNB1 and PLXNB2 that plays an important role in cell-cell signaling. Regulates GABAergic ... more | 1 | Details |
| Semenogelin-1 | Humans | Predominant protein in semen. It participates in the formation of a gel matrix entrapping the accessory gland secreti... more | 4 | Details |
| Semenogelin-2 | Humans | Participates in the formation of a gel matrix (sperm coagulum) entrapping the accessory gland secretions and ejaculat... more | 2 | Details |
| Sensor cyclic diguanylate phosphodiesterase, GAF and GAF domain-containing | Geobacter sulfurreducens (strain ATCC 51573 / DSM 12127 / PCA) | Not Available | 1 | Details |
| Sensor histidine kinase CitA | Klebsiella pneumoniae | Member of the two-component regulatory system CitA/CitB. Probably activates CitB by phosphorylation. The periplasmic ... more | 2 | Details |
| Sensor histidine kinase EnvZ | Escherichia coli (strain K12) | Member of the two-component regulatory system EnvZ/OmpR involved in osmoregulation (particularly of genes ompF and om... more | 1 | Details |
| Sensor protein FixL | Bradyrhizobium japonicum (strain USDA 110) | Putative oxygen sensor; modulates the activity of FixJ, a transcriptional activator of nitrogen fixation fixK gene. F... more | 2 | Details |
| Sensor protein PhoQ | Escherichia coli (strain K12) | Member of the two-component regulatory system PhoP/PhoQ involved in adaptation to low Mg(2+) environments and the con... more | 1 | Details |
| Sensory rhodopsin transducer | Thermotoga maritima (strain ATCC 43589 / MSB8 / DSM 3109 / JCM 10099) | Not Available | 1 | Details |
| Sentrin-specific protease 1 | Humans | Protease that catalyzes two essential functions in the SUMO pathway. The first is the hydrolysis of an alpha-linked p... more | 1 | Details |
| Sepiapterin reductase | Humans | Catalyzes the final one or two reductions in tetra-hydrobiopterin biosynthesis to form 5,6,7,8-tetrahydrobiopterin | 5 | Details |
| Sequestosome-1 | Humans | Molecular adapter required for selective macroautophagy (aggrephagy) by acting as a bridge between polyubiquitinated ... more | 1 | Details |
| Serine acetyltransferase | Haemophilus influenzae (strain ATCC 51907 / DSM 11121 / KW20 / Rd) | Not Available | 1 | Details |
| Serine acetyltransferase | Yersinia pestis | Not Available | 1 | Details |
| Serine dehydratase-like | Humans | Catalyzes the pyridoxal-phosphate-dependent dehydrative deamination of L-threonine and L-serine to ammonia and alpha-... more | 1 | Details |
| Serine hydrolase BPHL | Humans | Specific alpha-amino acid ester serine hydrolase that prefers small, hydrophobic, and aromatic side chains and does n... more | 1 | Details |
| Serine hydrolase RBBP9 | Humans | Serine hydrolase. Catalyzes the hydrolytic activation of amino acid ester of the antiviral prodrug valacyclovir to it... more | 1 | Details |
| Serine hydroxymethyltransferase | Geobacillus kaustophilus (strain HTA426) | Catalyzes the reversible interconversion of serine and glycine with tetrahydrofolate (THF) serving as the one-carbon ... more | 1 | Details |
| Serine hydroxymethyltransferase | Humans | Interconversion of serine and glycine. | 3 | Details |
| Serine hydroxymethyltransferase | Shigella flexneri | Catalyzes the reversible interconversion of serine and glycine with tetrahydrofolate (THF) serving as the one-carbon ... more | 2 | Details |
| Serine hydroxymethyltransferase, cytosolic | Humans | Pyridoxal phosphate (PLP)-dependent enzyme that catalyzes the reversible conversion of serine and tetrahydrofolate (T... more | 7 | Details |
| Serine hydroxymethyltransferase, mitochondrial | Humans | Catalyzes the cleavage of serine to glycine accompanied with the production of 5,10-methylenetetrahydrofolate, an ess... more | 4 | Details |
| Serine palmitoyltransferase 1 | Humans | Component of the serine palmitoyltransferase multisubunit enzyme (SPT) that catalyzes the initial and rate-limiting s... more | 2 | Details |