Activating Compound | Comment | Organism | Structure |
---|---|---|---|
additional information | ExoI enzymatic activity is stimulated by single-stranded DNA-binding protein, whereby the hydrophobic C-terminal residues play critical roles in ExoI binding | Escherichia coli |
Inhibitors | Comment | Organism | Structure |
---|---|---|---|
single-stranded DNA-binding protein | deleting the N-terminal most Met from the C-terminus of single-stranded DNA-binding protein sequence has a negligible effect on apparent binding to ExoI. The C-terminus of single-stranded DNA-binding proteins abrogate single-stranded DNA-binding protein stimulation of ExoI activity through a competitive inhibition mechanism, the peptides can disrupt ExoI/single-stranded DNA-binding protein/single-stranded DNA ternary complexes. C-terminus of single-stranded DNA-binding protein inhibition is dose-dependent, requiring ca. 0.001 mM peptide to achieve 50% inhibition and ca. 0.01 mM to reduce ExoI activity to C-terminus of single-stranded DNA-binding protein-free levels. Addition of up to 0.1 mM of C-terminus of single-stranded DNA-binding protein does not inhibit ExoI activity to levels below that of ExoI with free single-stranded DNA, and addition of the peptide to single-stranded DNA-binding-protein free reactions has no measurable effect on ExoI nuclease activity | Escherichia coli |
KM Value [mM] | KM Value Maximum [mM] | Substrate | Comment | Organism | Structure |
---|---|---|---|---|---|
0.016 | - |
single-stranded DNA | at 37°C, in 20 mM Tris-HCl buffer, pH 8.0, 100 mM NaCl, 3 mM MgCl2, 1 mM 2-mercaptoethanol, 0.1 g/l bovine serum albumin, 10% (v/v) glycerol, 5% (v/v) dimethyl sulfoxide | Escherichia coli |
Organism | UniProt | Comment | Textmining |
---|---|---|---|
Escherichia coli | - |
- |
- |
Purification (Comment) | Organism |
---|---|
- |
Escherichia coli |
Substrates | Comment Substrates | Organism | Products | Comment (Products) | Rev. | Reac. |
---|---|---|---|---|---|---|
single-stranded DNA + H2O | - |
Escherichia coli | ? | - |
? |
Turnover Number Minimum [1/s] | Turnover Number Maximum [1/s] | Substrate | Comment | Organism | Structure |
---|---|---|---|---|---|
115.5 | - |
single-stranded DNA | at 37°C, in 20 mM Tris-HCl buffer, pH 8.0, 100 mM NaCl, 3 mM MgCl2, 1 mM 2-mercaptoethanol, 0.1 g/l bovine serum albumin, 10% (v/v) glycerol, 5% (v/v) dimethyl sulfoxide | Escherichia coli |
IC50 Value | IC50 Value Maximum | Comment | Organism | Inhibitor | Structure |
---|---|---|---|---|---|
0.0043 | - |
peptide inhibitor with N-terminal truncation WDFDDDIPF, at 22°C in 20 mM Tris-HCl buffer, pH 8.0, 100 mM NaCl, 1 mM MgCl2, 1 mM 2-mercaptoethanol, 0.1 g/l bovine serum albumin, 4% (v/v) glycerol, 1% (v/v) dimethyl sulfoxide | Escherichia coli | single-stranded DNA-binding protein | |
0.0052 | - |
wild type peptide inhibitor, at 22°C in 20 mM Tris-HCl buffer, pH 8.0, 100 mM NaCl, 1 mM MgCl2, 1 mM 2-mercaptoethanol, 0.1 g/l bovine serum albumin, 4% (v/v) glycerol, 1% (v/v) dimethyl sulfoxide | Escherichia coli | single-stranded DNA-binding protein | |
0.0067 | - |
peptide inhibitor with neutralizing modification WMDFDADIPF, at 22°C in 20 mM Tris-HCl buffer, pH 8.0, 100 mM NaCl, 1 mM MgCl2, 1 mM 2-mercaptoethanol, 0.1 g/l bovine serum albumin, 4% (v/v) glycerol, 1% (v/v) dimethyl sulfoxide | Escherichia coli | single-stranded DNA-binding protein | |
0.0085 | - |
peptide inhibitor with neutralizing modification WMDFADDIPF, at 22°C in 20 mM Tris-HCl buffer, pH 8.0, 100 mM NaCl, 1 mM MgCl2, 1 mM 2-mercaptoethanol, 0.1 g/l bovine serum albumin, 4% (v/v) glycerol, 1% (v/v) dimethyl sulfoxide | Escherichia coli | single-stranded DNA-binding protein | |
0.0093 | - |
peptide inhibitor with neutralizing modification WMDFDDAIPF, at 22°C in 20 mM Tris-HCl buffer, pH 8.0, 100 mM NaCl, 1 mM MgCl2, 1 mM 2-mercaptoethanol, 0.1 g/l bovine serum albumin, 4% (v/v) glycerol, 1% (v/v) dimethyl sulfoxide | Escherichia coli | single-stranded DNA-binding protein | |
0.0116 | - |
peptide inhibitor with neutralizing modification WMAFDDDIPF, at 22°C in 20 mM Tris-HCl buffer, pH 8.0, 100 mM NaCl, 1 mM MgCl2, 1 mM 2-mercaptoethanol, 0.1 g/l bovine serum albumin, 4% (v/v) glycerol, 1% (v/v) dimethyl sulfoxide | Escherichia coli | single-stranded DNA-binding protein | |
0.0121 | - |
peptide inhibitor with N-terminal truncation WFDDDIPF, at 22°C in 20 mM Tris-HCl buffer, pH 8.0, 100 mM NaCl, 1 mM MgCl2, 1 mM 2-mercaptoethanol, 0.1 g/l bovine serum albumin, 4% (v/v) glycerol, 1% (v/v) dimethyl sulfoxide | Escherichia coli | single-stranded DNA-binding protein | |
0.0253 | - |
peptide inhibitor with N-terminal truncation WDDDIPF, at 22°C in 20 mM Tris-HCl buffer, pH 8.0, 100 mM NaCl, 1 mM MgCl2, 1 mM 2-mercaptoethanol, 0.1 g/l bovine serum albumin, 4% (v/v) glycerol, 1% (v/v) dimethyl sulfoxide | Escherichia coli | single-stranded DNA-binding protein | |
0.0335 | - |
peptide inhibitor with N-terminal truncation WDDIPF, at 22°C in 20 mM Tris-HCl buffer, pH 8.0, 100 mM NaCl, 1 mM MgCl2, 1 mM 2-mercaptoethanol, 0.1 g/l bovine serum albumin, 4% (v/v) glycerol, 1% (v/v) dimethyl sulfoxide | Escherichia coli | single-stranded DNA-binding protein | |
0.0529 | - |
peptide inhibitor with C-terminal modification/truncation WMDFDDDISF, at 22°C in 20 mM Tris-HCl buffer, pH 8.0, 100 mM NaCl, 1 mM MgCl2, 1 mM 2-mercaptoethanol, 0.1 g/l bovine serum albumin, 4% (v/v) glycerol, 1% (v/v) dimethyl sulfoxide | Escherichia coli | single-stranded DNA-binding protein | |
0.0791 | - |
peptide inhibitor with N-terminal truncation WDIPF, at 22°C in 20 mM Tris-HCl buffer, pH 8.0, 100 mM NaCl, 1 mM MgCl2, 1 mM 2-mercaptoethanol, 0.1 g/l bovine serum albumin, 4% (v/v) glycerol, 1% (v/v) dimethyl sulfoxide | Escherichia coli | single-stranded DNA-binding protein | |
0.169 | - |
peptide inhibitor with neutralizing modification WMAFAAAIPF, at 22°C in 20 mM Tris-HCl buffer, pH 8.0, 100 mM NaCl, 1 mM MgCl2, 1 mM 2-mercaptoethanol, 0.1 g/l bovine serum albumin, 4% (v/v) glycerol, 1% (v/v) dimethyl sulfoxide | Escherichia coli | single-stranded DNA-binding protein | |
0.252 | - |
peptide inhibitor with N-terminal truncation WIPF, at 22°C in 20 mM Tris-HCl buffer, pH 8.0, 100 mM NaCl, 1 mM MgCl2, 1 mM 2-mercaptoethanol, 0.1 g/l bovine serum albumin, 4% (v/v) glycerol, 1% (v/v) dimethyl sulfoxide | Escherichia coli | single-stranded DNA-binding protein | |
0.382 | - |
peptide inhibitor with C-terminal modification/truncation WMDFDDDIPY, at 22°C in 20 mM Tris-HCl buffer, pH 8.0, 100 mM NaCl, 1 mM MgCl2, 1 mM 2-mercaptoethanol, 0.1 g/l bovine serum albumin, 4% (v/v) glycerol, 1% (v/v) dimethyl sulfoxide | Escherichia coli | single-stranded DNA-binding protein | |
1 | - |
peptide inhibitor with C-terminal modification/truncation WMDFDDD, at 22°C in 20 mM Tris-HCl buffer, pH 8.0, 100 mM NaCl, 1 mM MgCl2, 1 mM 2-mercaptoethanol, 0.1 g/l bovine serum albumin, 4% (v/v) glycerol, 1% (v/v) dimethyl sulfoxide | Escherichia coli | single-stranded DNA-binding protein | |
1 | - |
peptide inhibitor with C-terminal modification/truncation WMDFDDDI, at 22°C in 20 mM Tris-HCl buffer, pH 8.0, 100 mM NaCl, 1 mM MgCl2, 1 mM 2-mercaptoethanol, 0.1 g/l bovine serum albumin, 4% (v/v) glycerol, 1% (v/v) dimethyl sulfoxide | Escherichia coli | single-stranded DNA-binding protein | |
1 | - |
peptide inhibitor with C-terminal modification/truncation WMDFDDDIP, at 22°C in 20 mM Tris-HCl buffer, pH 8.0, 100 mM NaCl, 1 mM MgCl2, 1 mM 2-mercaptoethanol, 0.1 g/l bovine serum albumin, 4% (v/v) glycerol, 1% (v/v) dimethyl sulfoxide | Escherichia coli | single-stranded DNA-binding protein |