Inhibitors | Comment | Organism | Structure |
---|---|---|---|
additional information | ceramidase inhibits hot-cold hemolysis induced by PlcHRx2, Cer is essential in the mechanism of hot-cold hemolysis | Pseudomonas aeruginosa |
Natural Substrates | Organism | Comment (Nat. Sub.) | Natural Products | Comment (Nat. Pro.) | Rev. | Reac. |
---|---|---|---|---|---|---|
additional information | Pseudomonas aeruginosa | The sphingomyelinase, but not the phospholipase C activity, is essential for induction of hot-cold hemolysis in human erythrocytes, that contain both phosphatidylcholine and sphingomyelin but also in goat erythrocytes, which lack phosphatidylcholine, however, in horse erythrocytes, with a large proportion of phosphatidylcholine and almost no sphingomyelin, hot-cold hemolysis induced by PlcHR2 is not observed, overview. Sphingomyelinase activity gives rise to the formation of ceramide-rich, rigid membrane domains that are resistant to Triton X-100 solubilization | ? | - |
? |
Organism | UniProt | Comment | Textmining |
---|---|---|---|
Pseudomonas aeruginosa | - |
- |
- |
Purification (Comment) | Organism |
---|---|
- |
Pseudomonas aeruginosa |
Substrates | Comment Substrates | Organism | Products | Comment (Products) | Rev. | Reac. |
---|---|---|---|---|---|---|
additional information | The sphingomyelinase, but not the phospholipase C activity, is essential for induction of hot-cold hemolysis in human erythrocytes, that contain both phosphatidylcholine and sphingomyelin but also in goat erythrocytes, which lack phosphatidylcholine, however, in horse erythrocytes, with a large proportion of phosphatidylcholine and almost no sphingomyelin, hot-cold hemolysis induced by PlcHR2 is not observed, overview. Sphingomyelinase activity gives rise to the formation of ceramide-rich, rigid membrane domains that are resistant to Triton X-100 solubilization | Pseudomonas aeruginosa | ? | - |
? | |
additional information | PlcHR2 toxin from Pseudomonas aeruginosa is an enzyme with both phospholipase C and sphingomyelinase activities, PlcHR2 hydrolyzes phosphatidylcholine and sphingomyelin at similar rates, but other phospholipids are cleaved at much lower rates, if at all | Pseudomonas aeruginosa | ? | - |
? | |
phosphatidylcholine + H2O | - |
Pseudomonas aeruginosa | diacylglycerol + choline phosphate | - |
? | |
sphingomyelin + H2O | - |
Pseudomonas aeruginosa | N-acylsphingosine + choline phosphate | - |
? |
Synonyms | Comment | Organism |
---|---|---|
More | cf. EC 3.1.4.3, the enzyme is the prototype of another phosphatase superfamily | Pseudomonas aeruginosa |
phospholipase C/sphingomyelinase | - |
Pseudomonas aeruginosa |
PlcHR2 | - |
Pseudomonas aeruginosa |
PlcHR2 | a phospholipase C/sphingomyelinase, the sphingomyelinase, but not the phospholipase C activity, is essential for hot-cold hemolysis | Pseudomonas aeruginosa |
PlcHR2 toxin | - |
Pseudomonas aeruginosa |
Temperature Optimum [°C] | Temperature Optimum Maximum [°C] | Comment | Organism |
---|---|---|---|
37 | - |
hemolysis assay at | Pseudomonas aeruginosa |
pH Optimum Minimum | pH Optimum Maximum | Comment | Organism |
---|---|---|---|
7.2 | - |
hemolysis assay at | Pseudomonas aeruginosa |