Crystallization (Comment) | Organism |
---|---|
wild-type enzyme with bound fluoride trapped in an intermediate conformation, and mutant R43Q with one phosphate and four Mn2+ bound, 7-8 mg/ml protein, with 0.2 M sodium acetate, pH 5.5, using 1.5 M-1.7 M NaCl as precipitant, X-ray diffraction structure determination and analysis at 1.05-1.68 A resolution | Escherichia coli |
Protein Variants | Comment | Organism |
---|---|---|
D102N | site-directed mutagenesis, the active site residue mutation does only marginally influence the pH-dependence of fluoride inhibition | Escherichia coli |
D65N | site-directed mutagenesis, the active site residue mutation does only marginally influence the pH-dependence of fluoride inhibition | Escherichia coli |
D67N | site-directed mutagenesis, the active site residue mutation does only marginally influence the pH-dependence of fluoride inhibition | Escherichia coli |
D70N | site-directed mutagenesis, the active site residue mutation does only marginally influence the pH-dependence of fluoride inhibition | Escherichia coli |
R43Q | site-directed mutagenesis, crystal structure determination and analysis and comparison to the wild-type structure | Escherichia coli |
Y55F | site-directed mutagenesis, the active site residue mutation does only marginally influence the pH-dependence of fluoride inhibition | Escherichia coli |
Inhibitors | Comment | Organism | Structure |
---|---|---|---|
fluoride | reversible inhibition, binds to the active site, binding structure, overview | Escherichia coli |
Localization | Comment | Organism | GeneOntology No. | Textmining |
---|---|---|---|---|
soluble | - |
Escherichia coli | - |
- |
Metals/Ions | Comment | Organism | Structure |
---|---|---|---|
Mg2+ | binding depends highly on the pH, binds to the active site, binding structure, overview | Escherichia coli | |
Mn2+ | binding depends highly on the pH, four ions bound per enzyme molecule, binds to the active site, binding structure, overview | Escherichia coli |
Natural Substrates | Organism | Comment (Nat. Sub.) | Natural Products | Comment (Nat. Pro.) | Rev. | Reac. |
---|---|---|---|---|---|---|
diphosphate + H2O | Escherichia coli | - |
2 phosphate | - |
r |
Organism | UniProt | Comment | Textmining |
---|---|---|---|
Escherichia coli | P0A7A9 | - |
- |
Substrates | Comment Substrates | Organism | Products | Comment (Products) | Rev. | Reac. |
---|---|---|---|---|---|---|
diphosphate + H2O | - |
Escherichia coli | 2 phosphate | - |
r | |
diphosphate + H2O | the rate-limiting step of Mn2+-supported hydrolysis of the phosphoanhydride bond is followed by a fast release of the leaving phosphate from the P1 site, overview | Escherichia coli | 2 phosphate | Mg- or Mn-bound substrate for the synthesis reaction | r |
Synonyms | Comment | Organism |
---|---|---|
PPase | - |
Escherichia coli |
Temperature Optimum [°C] | Temperature Optimum Maximum [°C] | Comment | Organism |
---|---|---|---|
25 | - |
assay at | Escherichia coli |
pH Optimum Minimum | pH Optimum Maximum | Comment | Organism |
---|---|---|---|
7.4 | - |
assay at, the pH heavily influences the metal binding of the enzyme, hydrolysis | Escherichia coli |
8 | - |
assay at, synthesis | Escherichia coli |
Ki Value [mM] | Ki Value maximum [mM] | Inhibitor | Comment | Organism | Structure |
---|---|---|---|---|---|
0.0028 | - |
fluoride | pH 7.4, 25°C, with 0.05 mM Mn2+ | Escherichia coli | |
0.0358 | - |
fluoride | pH 7.4, 25°C, with 5 mM Mn2+ | Escherichia coli |