Activating Compound | Comment | Organism | Structure |
---|---|---|---|
arachidonic acid | exogenous, increases hPHS activity | Homo sapiens |
Cloned (Comment) | Organism |
---|---|
expression of isozymes PHS-1 and PHS-2 in CHO-K1 cells | Homo sapiens |
Inhibitors | Comment | Organism | Structure |
---|---|---|---|
DUP-697 | a standard PHS-2 inhibitor | Homo sapiens | |
SC-560 | a standard PHS-1 inhibitor | Homo sapiens |
Natural Substrates | Organism | Comment (Nat. Sub.) | Natural Products | Comment (Nat. Pro.) | Rev. | Reac. |
---|---|---|---|---|---|---|
arachidonate + AH2 + O2 | Homo sapiens | - |
prostaglandin H2 + A + H2O | - |
? | |
additional information | Homo sapiens | dopamine precursor L-dihydroxyphenylalanine, i.e. L-DOPA, and metabolites dihydroxyphenylacetic acid, homovanillic acid, and 3-methoxytyramine may serve as substrates for prostaglandin H synthase-catalyzed bioactivation to free radical intermediates | ? | - |
? |
Organism | UniProt | Comment | Textmining |
---|---|---|---|
Homo sapiens | - |
- |
- |
Substrates | Comment Substrates | Organism | Products | Comment (Products) | Rev. | Reac. |
---|---|---|---|---|---|---|
arachidonate + AH2 + O2 | - |
Homo sapiens | prostaglandin H2 + A + H2O | - |
? | |
additional information | dopamine precursor L-dihydroxyphenylalanine, i.e. L-DOPA, and metabolites dihydroxyphenylacetic acid, homovanillic acid, and 3-methoxytyramine may serve as substrates for prostaglandin H synthase-catalyzed bioactivation to free radical intermediates | Homo sapiens | ? | - |
? |
Synonyms | Comment | Organism |
---|---|---|
PHS-1 | - |
Homo sapiens |
PHS-2 | - |
Homo sapiens |
prostaglandin H synthase | - |
Homo sapiens |
Temperature Optimum [°C] | Temperature Optimum Maximum [°C] | Comment | Organism |
---|---|---|---|
37 | - |
assay at | Homo sapiens |
pH Optimum Minimum | pH Optimum Maximum | Comment | Organism |
---|---|---|---|
7.4 | - |
assay at | Homo sapiens |
General Information | Comment | Organism |
---|---|---|
physiological function | PHS isozyme-dependent oxidative damage to proteins and DNA, and cytotoxicity, overview. hPHS-1- and hPHS-2-expressing cells incubated with dopamine, L-dihydroxyphenylalanine, dihydroxyphenylacetic acid, or homovanillic acid exhibit increased cytotoxicity compared to untransfected cells, and cytotoxicity is increased further by exogenous arachidonic acid, which increases hPHS activity. Isozyme-specific, PHS-dependent oxidative damage and cytotoxicity caused by neurotransmitters, their precursors, and their metabolites may contribute to neurodegeneration associated with aging | Homo sapiens |