Cloned (Comment) | Organism |
---|---|
expression in Escherichia coli | Homo sapiens |
Crystallization (Comment) | Organism |
---|---|
structure of the HtrA3 protease domain together with the PDZ domain. The protein forms a trimer | Homo sapiens |
Protein Variants | Comment | Organism |
---|---|---|
additional information | a variant lacking the N-terminal domain forms stable trimers while both the catalytic domain alone and the short natural isoform are monomeric. The protease domain with the PDZ domain removed and an N-terminally truncated short natural isoform are fully active at a wide range of temperatures and their substrate affinity is not impaired | Homo sapiens |
KM Value [mM] | KM Value Maximum [mM] | Substrate | Comment | Organism | Structure |
---|---|---|---|---|---|
0.00074 | - |
Ala(7-methoxycoumarin-4-acetic acid)-IRRVSYSF-(5-amido-2-nitrobenzamide) | short natural isoform lacking the N-terminal domain, pH 7.5, temperature not specified in the publication | Homo sapiens | |
0.00088 | - |
Ala(7-methoxycoumarin-4-acetic acid)-IRRVSYSF-(5-amido-2-nitrobenzamide) | protease domain, pH 7.5, temperature not specified in the publication | Homo sapiens | |
0.00096 | - |
Ala(7-methoxycoumarin-4-acetic acid)-IRRVSYSF-(5-amido-2-nitrobenzamide) | variant lacking the N-terminal domain, pH 7.5, temperature not specified in the publication | Homo sapiens |
Organism | UniProt | Comment | Textmining |
---|---|---|---|
Homo sapiens | P83110 | isoform Htra3 | - |
Substrates | Comment Substrates | Organism | Products | Comment (Products) | Rev. | Reac. |
---|---|---|---|---|---|---|
Ala(7-methoxycoumarin-4-acetic acid)-IRRVSYSF-(5-amido-2-nitrobenzamide) + H2O | - |
Homo sapiens | ? | - |
? | |
beta-casein + H2O | - |
Homo sapiens | ? | - |
? |
Subunits | Comment | Organism |
---|---|---|
More | the presence of the PDZ domain influences HtrA3 trimer formation. The C-terminal sequence of HtrA3 appears to have little effect on activity and oligomerization | Homo sapiens |
Turnover Number Minimum [1/s] | Turnover Number Maximum [1/s] | Substrate | Comment | Organism | Structure |
---|---|---|---|---|---|
0.029 | - |
Ala(7-methoxycoumarin-4-acetic acid)-IRRVSYSF-(5-amido-2-nitrobenzamide) | protease domain, pH 7.5, temperature not specified in the publication | Homo sapiens | |
0.029 | - |
Ala(7-methoxycoumarin-4-acetic acid)-IRRVSYSF-(5-amido-2-nitrobenzamide) | variant lacking the N-terminal domain, pH 7.5, temperature not specified in the publication | Homo sapiens | |
0.03 | - |
Ala(7-methoxycoumarin-4-acetic acid)-IRRVSYSF-(5-amido-2-nitrobenzamide) | short natural isoform lacking the N-terminal domain, pH 7.5, temperature not specified in the publication | Homo sapiens |
General Information | Comment | Organism |
---|---|---|
physiological function | the PDZ domain is dispensable for HtrA3 activity | Homo sapiens |
kcat/KM Value [1/mMs-1] | kcat/KM Value Maximum [1/mMs-1] | Substrate | Comment | Organism | Structure |
---|---|---|---|---|---|
30.27 | - |
Ala(7-methoxycoumarin-4-acetic acid)-IRRVSYSF-(5-amido-2-nitrobenzamide) | variant lacking the N-terminal domain, pH 7.5, temperature not specified in the publication | Homo sapiens | |
33.03 | - |
Ala(7-methoxycoumarin-4-acetic acid)-IRRVSYSF-(5-amido-2-nitrobenzamide) | protease domain, pH 7.5, temperature not specified in the publication | Homo sapiens | |
40.5 | - |
Ala(7-methoxycoumarin-4-acetic acid)-IRRVSYSF-(5-amido-2-nitrobenzamide) | short natural isoform lacking the N-terminal domain, pH 7.5, temperature not specified in the publication | Homo sapiens |