| Streptopain | Streptococcus pyogenes | Cysteine protease that acts as a key streptococcal virulence factor by cleaving host proteins involved in immune resp... more | 2 | Details |
| Stress-induced-phosphoprotein 1 | Humans | Acts as a co-chaperone for HSP90AA1. Mediates the association of the molecular chaperones HSPA8/HSC70 and HSP90 | 1 | Details |
| Stringent starvation protein A | Yersinia pestis | Not Available | 1 | Details |
| Stromal cell-derived factor 1 | Humans | Chemoattractant active on T-lymphocytes and monocytes but not neutrophils. Activates the C-X-C chemokine receptor CXC... more | 5 | Details |
| Stromal cell-derived factor 2 | Humans | Not Available | 1 | Details |
| Stromal interaction molecule 1 | Humans | Acts as a Ca(2+) sensor that gates two major inward rectifying Ca(2+) channels at the plasma membrane: Ca(2+) release... more | 2 | Details |
| Stromelysin-1 | Humans | Metalloproteinase with a rather broad substrate specificity that can degrade fibronectin, laminin, gelatins of type I... more | 29 | Details |
| Stromelysin-2 | Humans | Can degrade fibronectin, gelatins of type I, III, IV, and V; weakly collagens III, IV, and V. Activates procollagenase | 2 | Details |
| Stromelysin-3 | Humans | May play an important role in the progression of epithelial malignancies | 2 | Details |
| Structural polyprotein | SINV | Capsid protein Forms an icosahedral capsid with a T=4 symmetry composed of 240 copies of the capsid protein surrounde... more | 1 | Details |
| Substance-K receptor | Humans | This is a receptor for the tachykinin neuropeptide substance K (neurokinin A). Is also able to bind and respond to ta... more | 6 | Details |
| Substance-P receptor | Humans | Receptor for the tachykinin substance P, also able to bind and respond to tachynins neurokinin A/substance K and neur... more | 36 | Details |
| Subtilisin BPN' | Bacillus amyloliquefaciens | Subtilisin is an extracellular alkaline serine protease, it catalyzes the hydrolysis of proteins and peptide amides. ... more | 5 | Details |
| Subtilisin Carlsberg | Bacillus licheniformis | Subtilisin is an extracellular alkaline serine protease, it catalyzes the hydrolysis of proteins and peptide amides. ... more | 6 | Details |
| Subtilisin DY | Bacillus licheniformis | Subtilisin is an extracellular alkaline serine protease, it catalyzes the hydrolysis of proteins and peptide amides. | 1 | Details |
| Subtilisin Savinase | Bacillus lentus | Subtilisin is an extracellular alkaline serine protease, it catalyzes the hydrolysis of proteins and peptide amides. | 1 | Details |
| Subtilisin-like protease | Vibrio sp. PA-44 | Not Available | 1 | Details |
| Subtilisin-like protease | Bacillus sp. KSM-KP43 | Not Available | 5 | Details |
| Succinate dehydrogenase | Humans | Not Available | 6 | Details |
| Succinate dehydrogenase [ubiquinone] cytochrome b small subunit, mitochondrial | Humans | Membrane-anchoring subunit of succinate dehydrogenase (SDH) that is involved in complex II of the mitochondrial elect... more | 3 | Details |
| Succinate dehydrogenase [ubiquinone] flavoprotein subunit, mitochondrial | Humans | Flavoprotein (FP) subunit of succinate dehydrogenase (SDH) that is involved in complex II of the mitochondrial electr... more | 6 | Details |
| Succinate dehydrogenase [ubiquinone] iron-sulfur subunit, mitochondrial | Humans | Iron-sulfur protein (IP) subunit of the succinate dehydrogenase complex (mitochondrial respiratory chain complex II),... more | 2 | Details |
| Succinate dehydrogenase cytochrome b556 subunit | Escherichia coli (strain K12) | Membrane-anchoring subunit of succinate dehydrogenase (SDH). | 3 | Details |
| Succinate dehydrogenase cytochrome b560 subunit, mitochondrial | Humans | Membrane-anchoring subunit of succinate dehydrogenase (SDH) that is involved in complex II of the mitochondrial elect... more | 3 | Details |
| Succinate dehydrogenase flavoprotein subunit | Escherichia coli (strain K12) | Two distinct, membrane-bound, FAD-containing enzymes are responsible for the catalysis of fumarate and succinate inte... more | 3 | Details |