Cloned (Comment) | Organism |
---|---|
codon-optimized gene mrmnp1, high level recombinant expression of wild-type and mutant enzymes in Pichia pastoris strain X-33 with proper heme incorporation in to the resulting enzyme proteins | Moniliophthora roreri |
Protein Variants | Comment | Organism |
---|---|---|
A172W | site-directed mutagenesis, the mutant shows decreased stability compared to the wild-type enzyme in Britton Robinson buffer at pH 3-7 for 24 h measured with 2,2'-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid) as a substrate. The mutant shows increased kcat values for all substrates compared to wild-type. The mutant is active with lignin dimers, veratryl alcohol, and the azo dye Reactive Black 5 in contrast to the wild-type enzyme | Moniliophthora roreri |
A172W/A269R | site-directed mutagenesis, the mutant shows decreased stability compared to the wild-type enzyme in Britton Robinson buffer at pH 3-7 for 24 h measured with 2,2'-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid) as a substrate. The mutant does not show altered kcat values for all substrates compared to wild-type. The mutant is active with lignin dimers, veratryl alcohol, and the azo dye Reactive Black 5 in contrast to the wild-type enzyme | Moniliophthora roreri |
A172W/A273T | site-directed mutagenesis, the mutant shows decreased stability compared to the wild-type enzyme in Britton Robinson buffer at pH 3-7 for 24 h measured with 2,2'-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid) as a substrate. The mutant shows increased kcat values for all substrates compared to wild-type. The mutant is active with lignin dimers, veratryl alcohol, and the azo dye Reactive Black 5 in contrast to the wild-type enzyme | Moniliophthora roreri |
A172W/F259M | site-directed mutagenesis, the mutant shows decreased stability compared to the wild-type enzyme in Britton Robinson buffer at pH 3-7 for 24 h measured with 2,2'-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid) as a substrate. The mutant shows increased kcat values for all substrates compared to wild-type. The mutant is active with lignin dimers, veratryl alcohol, and the azo dye Reactive Black 5 in contrast to the wild-type enzyme | Moniliophthora roreri |
A172W/I171V | site-directed mutagenesis, the mutant shows decreased stability compared to the wild-type enzyme in Britton Robinson buffer at pH 3-7 for 24 h measured with 2,2'-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid) as a substrate. The mutant shows increased kcat values for all substrates compared to wild-type. The mutant is active with lignin dimers, veratryl alcohol, and the azo dye Reactive Black 5 in contrast to the wild-type enzyme | Moniliophthora roreri |
A172W/K168V | site-directed mutagenesis, the mutant shows increased stability compared to the wild-type enzyme in Britton Robinson buffer at pH 3-7 for 24 h measured with 2,2'-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid) as a substrate. The mutant shows increased kcat values for all substrates compared to wild-type. The mutant is active with lignin dimers, veratryl alcohol, and the azo dye Reactive Black 5 in contrast to the wild-type enzyme | Moniliophthora roreri |
additional information | to extend the substrate spectrum of MrMnP1, catalytic tryptophan 172 is introduced at the enzyme surface. Properties of Moniliophthora roreri MrMnP1 manganese peroxidase enzyme are shifted towards those of a versatile peroxidase, comparison with the versatile peroxidase from Pleurotus eryngii (UniProt ID Q9UR19). The resulting mutants demonstrate additional activities towards high-redox-potential substrates, such as lignin dimers, veratryl alcohol, and the azo dye Reactive Black 5. The phenolic and non-phenolic lignin dimers guaiacylglycerol-beta-guaiacyl ether (Ge) and veratrylglycerol-beta-guaiacyl ether (Ve) are tested as substrates at pH 3.0-5.0. The phenolic lignin dimer Ge is barely oxidized by the wild-type enzyme (2% conversion), but after introduction of the A172W mutation around 33% can be degraded at pH 3.0 and pH 4.0, and around 15% at pH 5.0. All additional mutations (except for A269R) further increased the activity towards guaiacylglycerol-beta-guaiacyl ether at pH 3.0 and pH 4.0, with the A172W/K168V mutant showing the highest conversion of up to 56% at pH 3.0. The more recalcitrant non-phenolic lignin dimer veratrylglycerol-beta-guaiacyl ether is oxidized only by the mutants, but not by the wild-type enzyme. The activity of the mutants is more similar to the substrate specificity of EC 1.11.1.14. The wild-type enzyme and the mutants are active with dyes: crystal violet, methyl orange, alizarin red S, Indigo carmine, and remazol brilliant blue R, except for the poor activity of the wild-type enzyme with alizarin red S, overview. The mutants showed similar tendencies, decolorization at pH 3.0 is stronger than that with wild-type enzyme | Moniliophthora roreri |
Inhibitors | Comment | Organism | Structure |
---|---|---|---|
Mn2+ | competitive inhibition | Moniliophthora roreri |
KM Value [mM] | KM Value Maximum [mM] | Substrate | Comment | Organism | Structure |
---|---|---|---|---|---|
additional information | - |
additional information | Michaelis-Menten kinetics | Moniliophthora roreri | |
0.0003 | - |
veratryl alcohol | pH 7.0, 30°C, mutant A172W | Moniliophthora roreri | |
0.0003 | - |
veratryl alcohol | pH 7.0, 30°C, mutant A172W/A269R | Moniliophthora roreri | |
0.0004 | - |
Reactive Black 5 | pH 7.0, 30°C, mutant A172W | Moniliophthora roreri | |
0.0004 | - |
Reactive Black 5 | pH 7.0, 30°C, mutant A172W/F259M | Moniliophthora roreri | |
0.0005 | - |
Reactive Black 5 | pH 7.0, 30°C, mutant A172W/A269R | Moniliophthora roreri | |
0.0005 | - |
Reactive Black 5 | pH 7.0, 30°C, mutant A172W/A273T | Moniliophthora roreri | |
0.0005 | - |
Reactive Black 5 | pH 7.0, 30°C, mutant A172W/K168V | Moniliophthora roreri | |
0.0006 | - |
veratryl alcohol | pH 7.0, 30°C, mutant A172W/I171V | Moniliophthora roreri | |
0.0007 | - |
Reactive Black 5 | pH 7.0, 30°C, mutant A172W/I171V | Moniliophthora roreri | |
0.001 | - |
veratryl alcohol | pH 7.0, 30°C, mutant A172W/F259M | Moniliophthora roreri | |
0.001 | - |
veratryl alcohol | pH 7.0, 30°C, mutant A172W/K168V | Moniliophthora roreri | |
0.0011 | - |
veratryl alcohol | pH 7.0, 30°C, mutant A172W/A273T | Moniliophthora roreri | |
0.0104 | - |
2,6-dimethoxyphenol | pH 7.0, 30°C, mutant A172W/A273T | Moniliophthora roreri | |
0.0116 | - |
2,6-dimethoxyphenol | pH 7.0, 30°C, mutant A172W/A269R | Moniliophthora roreri | |
0.0144 | - |
2,6-dimethoxyphenol | pH 7.0, 30°C, mutant A172W/F259M | Moniliophthora roreri | |
0.0163 | - |
2,6-dimethoxyphenol | pH 7.0, 30°C, mutant A172W/K168V | Moniliophthora roreri | |
0.0373 | - |
2,6-dimethoxyphenol | pH 7.0, 30°C, mutant A172W/I171V | Moniliophthora roreri | |
0.0528 | - |
2,6-dimethoxyphenol | pH 7.0, 30°C, mutant A172W | Moniliophthora roreri |
Localization | Comment | Organism | GeneOntology No. | Textmining |
---|---|---|---|---|
extracellular | - |
Moniliophthora roreri | - |
- |
Metals/Ions | Comment | Organism | Structure |
---|---|---|---|
Ca2+ | the enzyme binds 2 calcium ions per subunit, required, activates | Moniliophthora roreri |
Natural Substrates | Organism | Comment (Nat. Sub.) | Natural Products | Comment (Nat. Pro.) | Rev. | Reac. |
---|---|---|---|---|---|---|
2 Mn(II) + 2 H+ + H2O2 | Moniliophthora roreri | - |
2 Mn(III) + 2 H2O | - |
? | |
2 Mn(II) + 2 H+ + H2O2 | Moniliophthora roreri MCA 2997 | - |
2 Mn(III) + 2 H2O | - |
? |
Organism | UniProt | Comment | Textmining |
---|---|---|---|
Moniliophthora roreri | V2XS39 | - |
- |
Moniliophthora roreri MCA 2997 | V2XS39 | - |
- |
Substrates | Comment Substrates | Organism | Products | Comment (Products) | Rev. | Reac. |
---|---|---|---|---|---|---|
2 Mn(II) + 2 H+ + H2O2 | - |
Moniliophthora roreri | 2 Mn(III) + 2 H2O | - |
? | |
2 Mn(II) + 2 H+ + H2O2 | - |
Moniliophthora roreri MCA 2997 | 2 Mn(III) + 2 H2O | - |
? | |
2,2'-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid) + 2 H+ + H2O2 | substrate of A172W variants mutant enzymes | Moniliophthora roreri | oxidized 2,2'-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid) + 2 H2O | - |
? | |
2,2'-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid) + 2 H+ + H2O2 | substrate of A172W variants mutant enzymes | Moniliophthora roreri MCA 2997 | oxidized 2,2'-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid) + 2 H2O | - |
? | |
2,6-dimethoxyphenol + 2 H+ + H2O2 | substrate of A172W variants mutant enzymes, very low activity with the wild-type enzyme | Moniliophthora roreri | oxidized 2,6-dimethoxyphenol + 2 H2O | - |
? | |
2,6-dimethoxyphenol + 2 H+ + H2O2 | substrate of A172W variants mutant enzymes, very low activity with the wild-type enzyme | Moniliophthora roreri MCA 2997 | oxidized 2,6-dimethoxyphenol + 2 H2O | - |
? | |
alizarin red S + H2O2 | substrate of A172W variants mutant enzymes, poor activity with the wild-type enzyme | Moniliophthora roreri | ? + 2 H2O | - |
? | |
crystal violet + H2O2 | substrate of wild-type and A172W variants mutant enzymes | Moniliophthora roreri | ? + 2 H2O | - |
? | |
guaiacylglycerol-beta-guaiacyl ether + H2O2 | substrate of A172W variants mutant enzymes | Moniliophthora roreri | ? + 2 H2O | - |
? | |
indigo carmine + H2O2 | substrate of wild-type and A172W variants mutant enzymes | Moniliophthora roreri | ? + 2 H2O | - |
? | |
methyl orange + H2O2 | substrate of wild-type and A172W variants mutant enzymes | Moniliophthora roreri | ? + 2 H2O | - |
? | |
additional information | the phenolic and non-phenolic lignin dimers guaiacylglycerol-beta-guaiacyl ether (Ge) and veratrylglycerol-beta-guaiacyl ether (Ve) are tested as substrates at pH 3.0-5.0. The phenolic lignin dimer Ge is barely oxidized by the wild-type enzyme (2% conversion), but after introduction of the A172W mutation around 33% can be degraded at pH 3.0 and pH 4.0, and around 15% at pH 5.0. All additional mutations (except for A269R) further increased the activity towards guaiacylglycerol-beta-guaiacyl ether at pH 3.0 and pH 4.0, with the A172W K168V mutant showing the highest conversion of up to 56% at pH 3.0. The more recalcitrant non-phenolic lignin dimer veratrylglycerol-beta-guaiacyl ether is oxidized only by the mutants, but not by the wild-type enzyme. The activity of the mutants is more similar to the substrate specificity of EC 1.11.1.14. The wild-type enzyme and the mutants are active with dyes: crystal violet, methyl orange, alizarin red S, indigo carmine, and remazol brilliant blue R, except for the poor activity of the wild-type enzyme with alizarin red S, overview. The mutants show similar tendencies, decolorization at pH 3.0 is stronger than that with wild-type enzyme. The wild-type MrMnP1 is able to convert ABTS, 2,6-DMP, and Mn2+, but not high-redox-potential substrates, such as Reactive Black 5 or veratryl alcohol | Moniliophthora roreri | ? | - |
- |
|
additional information | the phenolic and non-phenolic lignin dimers guaiacylglycerol-beta-guaiacyl ether (Ge) and veratrylglycerol-beta-guaiacyl ether (Ve) are tested as substrates at pH 3.0-5.0. The phenolic lignin dimer Ge is barely oxidized by the wild-type enzyme (2% conversion), but after introduction of the A172W mutation around 33% can be degraded at pH 3.0 and pH 4.0, and around 15% at pH 5.0. All additional mutations (except for A269R) further increased the activity towards guaiacylglycerol-beta-guaiacyl ether at pH 3.0 and pH 4.0, with the A172W K168V mutant showing the highest conversion of up to 56% at pH 3.0. The more recalcitrant non-phenolic lignin dimer veratrylglycerol-beta-guaiacyl ether is oxidized only by the mutants, but not by the wild-type enzyme. The activity of the mutants is more similar to the substrate specificity of EC 1.11.1.14. The wild-type enzyme and the mutants are active with dyes: crystal violet, methyl orange, alizarin red S, indigo carmine, and remazol brilliant blue R, except for the poor activity of the wild-type enzyme with alizarin red S, overview. The mutants show similar tendencies, decolorization at pH 3.0 is stronger than that with wild-type enzyme. The wild-type MrMnP1 is able to convert ABTS, 2,6-DMP, and Mn2+, but not high-redox-potential substrates, such as Reactive Black 5 or veratryl alcohol | Moniliophthora roreri MCA 2997 | ? | - |
- |
|
Reactive Black 5 + 2 H+ + H2O2 | dye decolorization, substrate of A172W variants mutant enzymes | Moniliophthora roreri | oxidized Reactive Black 5 + 2 H2O | - |
? | |
Reactive Black 5 + 2 H+ + H2O2 | dye decolorization, substrate of A172W variants mutant enzymes | Moniliophthora roreri MCA 2997 | oxidized Reactive Black 5 + 2 H2O | - |
? | |
remazol brilliant blue R + H2O2 | substrate of wild-type and A172W variants mutant enzymes | Moniliophthora roreri | ? + 2 H2O | - |
? | |
veratryl alcohol + H2O2 | substrate of A172W variants mutant enzymes | Moniliophthora roreri | 3,4-dimethoxybenzoic acid + 2 H2O | - |
? | |
veratrylglycerol-beta-guaiacyl ether + H2O2 | substrate of A172W variants mutant enzymes | Moniliophthora roreri | ? + 2 H2O | - |
? |
Synonyms | Comment | Organism |
---|---|---|
MnP | - |
Moniliophthora roreri |
Moror_3885 | - |
Moniliophthora roreri |
MrMnP1 | - |
Moniliophthora roreri |
short MnP | - |
Moniliophthora roreri |
Temperature Optimum [°C] | Temperature Optimum Maximum [°C] | Comment | Organism |
---|---|---|---|
22 | - |
assay at room temperature | Moniliophthora roreri |
Turnover Number Minimum [1/s] | Turnover Number Maximum [1/s] | Substrate | Comment | Organism | Structure |
---|---|---|---|---|---|
0.3 | - |
veratryl alcohol | pH 7.0, 30°C, mutant A172W | Moniliophthora roreri | |
0.3 | - |
veratryl alcohol | pH 7.0, 30°C, mutant A172W/A269R | Moniliophthora roreri | |
0.4 | - |
2,6-dimethoxyphenol | pH 7.0, 30°C, mutant A172W/A269R | Moniliophthora roreri | |
0.5 | - |
2,6-dimethoxyphenol | pH 7.0, 30°C, mutant A172W | Moniliophthora roreri | |
0.7 | - |
2,6-dimethoxyphenol | pH 7.0, 30°C, mutant A172W/A273T | Moniliophthora roreri | |
0.7 | - |
veratryl alcohol | pH 7.0, 30°C, mutant A172W/I171V | Moniliophthora roreri | |
0.8 | - |
2,6-dimethoxyphenol | pH 7.0, 30°C, mutant A172W/F259M | Moniliophthora roreri | |
1 | - |
2,6-dimethoxyphenol | pH 7.0, 30°C, mutant A172W/K168V | Moniliophthora roreri | |
1.1 | - |
veratryl alcohol | pH 7.0, 30°C, mutant A172W/A273T | Moniliophthora roreri | |
1.1 | - |
veratryl alcohol | pH 7.0, 30°C, mutant A172W/F259M | Moniliophthora roreri | |
1.1 | - |
2,6-dimethoxyphenol | pH 7.0, 30°C, mutant A172W/I171V | Moniliophthora roreri | |
1.3 | - |
veratryl alcohol | pH 7.0, 30°C, mutant A172W/K168V | Moniliophthora roreri | |
7.9 | - |
Reactive Black 5 | pH 7.0, 30°C, mutant A172W/A269R | Moniliophthora roreri | |
8.6 | - |
Reactive Black 5 | pH 7.0, 30°C, mutant A172W | Moniliophthora roreri | |
12.1 | - |
Reactive Black 5 | pH 7.0, 30°C, mutant A172W/F259M | Moniliophthora roreri | |
13.4 | - |
Reactive Black 5 | pH 7.0, 30°C, mutant A172W/I171V | Moniliophthora roreri | |
16 | - |
Reactive Black 5 | pH 7.0, 30°C, mutant A172W/A273T | Moniliophthora roreri | |
16.7 | - |
Reactive Black 5 | pH 7.0, 30°C, mutant A172W/K168V | Moniliophthora roreri |
pH Optimum Minimum | pH Optimum Maximum | Comment | Organism |
---|---|---|---|
3 | - |
- |
Moniliophthora roreri |
pH Minimum | pH Maximum | Comment | Organism |
---|---|---|---|
3 | 8 | the highest activity of all enzymes with all tested substrates is at pH 3, except for the WT with 2,6-DMP as a substrate, for which the activity is almost twice as high at pH 8 than that at pH 3. Although the activity of the mutants towards ABTS drops to 5-10% at pH 5 and higher, the residual activities of the mutants towards Reactive Black 5 and veratryl alcohol drops less at higher pH values (20-40% residual activity at pH 5). For 2,6-dimethoxyphenol as a substrate, the activities of MrMnP1 and mutants are lowest at pH 6, but increase at pH 7 and pH 8. The activity at high pH values is transient, presumably due to Ca2+ loss and inactivation of the enzyme. Autoxidation of 2,6-DMP in Britton Robinson buffer at pH 8 in the presence of H2O2 is not detected | Moniliophthora roreri |
pH Stability | pH Stability Maximum | Comment | Organism |
---|---|---|---|
3 | - |
recombinant wild-type enzyme retains 26% activity after 24 h, while mutant A172W/K168V shows increased stability and retains 54% activity after 24 h, measured with 2,2'-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid) as a substrate | Moniliophthora roreri |
6 | - |
recombinant wild-type enzyme retains 38% activity after 24 h, while mutant A172W/K168V shows increased stability and retains 72% activity after 24 h, measured with 2,2'-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid) as a substrate | Moniliophthora roreri |
Cofactor | Comment | Organism | Structure |
---|---|---|---|
heme b | the enzyme binds 1 heme b (iron(II)-protoporphyrin IX) group per subunit | Moniliophthora roreri |
General Information | Comment | Organism |
---|---|---|
evolution | maganese peroxidases (MnPs) can be divided into groups of short, long, and extra-long MnPs. The length of long MnPs is 348-361 amino acids, extra-long MnPs are longer than 362 amino acids, and short MnPs are no longer than 348 amino acids. The long and extralong MnPs are characterized by a C-terminal tail that surrounds the main heme access channel, preventing oxidation of low-redox-potential substrates (e.g. ABTS, 2,6-DMP). MrMnP1 is 343 amino acids long and can be categorized as a short MnP | Moniliophthora roreri |
additional information | the catalytic tryptophan 172 is considered to be essential for oxidizing substrates with a high redox potential | Moniliophthora roreri |
kcat/KM Value [1/mMs-1] | kcat/KM Value Maximum [1/mMs-1] | Substrate | Comment | Organism | Structure |
---|---|---|---|---|---|
9.5 | - |
2,6-dimethoxyphenol | pH 7.0, 30°C, mutant A172W | Moniliophthora roreri | |
29.5 | - |
2,6-dimethoxyphenol | pH 7.0, 30°C, mutant A172W/I171V | Moniliophthora roreri | |
34.5 | - |
2,6-dimethoxyphenol | pH 7.0, 30°C, mutant A172W/A269R | Moniliophthora roreri | |
55.6 | - |
2,6-dimethoxyphenol | pH 7.0, 30°C, mutant A172W/F259M | Moniliophthora roreri | |
61.4 | - |
2,6-dimethoxyphenol | pH 7.0, 30°C, mutant A172W/K168V | Moniliophthora roreri | |
67.3 | - |
2,6-dimethoxyphenol | pH 7.0, 30°C, mutant A172W/A273T | Moniliophthora roreri | |
116.7 | - |
veratryl alcohol | pH 7.0, 30°C, mutant A172W/I171V | Moniliophthora roreri | |
1000 | - |
veratryl alcohol | pH 7.0, 30°C, mutant A172W | Moniliophthora roreri | |
1000 | - |
veratryl alcohol | pH 7.0, 30°C, mutant A172W/A269R | Moniliophthora roreri | |
1000 | - |
veratryl alcohol | pH 7.0, 30°C, mutant A172W/A273T | Moniliophthora roreri | |
1100 | - |
veratryl alcohol | pH 7.0, 30°C, mutant A172W/F259M | Moniliophthora roreri | |
1300 | - |
veratryl alcohol | pH 7.0, 30°C, mutant A172W/K168V | Moniliophthora roreri | |
15800 | - |
Reactive Black 5 | pH 7.0, 30°C, mutant A172W/A269R | Moniliophthora roreri | |
19143 | - |
Reactive Black 5 | pH 7.0, 30°C, mutant A172W/I171V | Moniliophthora roreri | |
21500 | - |
Reactive Black 5 | pH 7.0, 30°C, mutant A172W | Moniliophthora roreri | |
30250 | - |
Reactive Black 5 | pH 7.0, 30°C, mutant A172W/F259M | Moniliophthora roreri | |
32000 | - |
Reactive Black 5 | pH 7.0, 30°C, mutant A172W/A273T | Moniliophthora roreri | |
33400 | - |
Reactive Black 5 | pH 7.0, 30°C, mutant A172W/K168V | Moniliophthora roreri |