Diketone hydrolase from Anabaena sp. PCC 7120
Enzyme Description
Sequence
MGSSHHHHHHMTLNQPEYFTKYENLHFHRDENGILEVRMHTNGSSLVFTGKTHREFPDAFYDISRDRDNRVVILTGSGDAWMAEIDFPSLGDVTNPREWDKTYWEGKKVLQNLLDIEVPVISAVNGAALLHSEYILTTDIILASENTVFQDMPHLNAGIVPGDGVHILWPLALGLYRGRYFLFTQEKLTAQQAYELNVVHEVLPQSKLMERAWEIARTLAKQPTLNLRYTRVALTQRLKRLVNEGIGYGLALEGITATDLRNN
Elina Siirola et al. (2011)
β Tolerance of Ξ²-diketone hydrolases as representatives of the crotonase superfamily towards organic solvents
Biotechnology and Bioengineering
Β· doi:10.1002/bit.23275 β
Β· Activity - Classical Specificity - Enantioselectivity
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Database ID
UniParc: UPI0000EDA45E β
Sequence Annotation
Inferred - from protein name
Protein Source
Recombinant, host bacterium Escherichia coli BL21 (DE3)
Experimental Data (24 measurements)
24 measurements β page 1 of 2
| Property | Assay | Solvent | Solvent Volume | Aqueous Reference | Measured Value | Units | Solution | pH | Temperature | Substrate(s) | Product(s) | Cofactor(s) | Shaking | Comments |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Activity - Classical | Activity measured by HPLC in the presence of organic solvent | 1,4-Dioxane | 80% | 100 | 7 | % | 50 mM phosphate buffer | 7.5 | 30Β°C | 50 mM Bicyclo(2.2.2)octane-2,6-dione | (S)-2-(3-ketocyclohexyl)acetic acid | β | 120 rpm | Classical aqueous control (in %) |
| Activity - Classical | Activity measured by HPLC in the presence of organic solvent | Petroleum Ether | 80% | 100 | 82 | % | 50 mM phosphate buffer | 7.5 | 30Β°C | 50 mM Bicyclo(2.2.2)octane-2,6-dione | (S)-2-(3-ketocyclohexyl)acetic acid | β | 120 rpm | Classical aqueous control (in %) |
| Activity - Classical | Activity measured by HPLC in the presence of organic solvent | Diisopropyl Ether | 80% | 100 | 75 | % | 50 mM phosphate buffer | 7.5 | 30Β°C | 50 mM Bicyclo(2.2.2)octane-2,6-dione | (S)-2-(3-ketocyclohexyl)acetic acid | β | 120 rpm | Classical aqueous control (in %) |
| Activity - Classical | Activity measured by HPLC in the presence of organic solvent | tert-Butyl Methyl Ether (MTBE) | 80% | 100 | 64 | % | 50 mM phosphate buffer | 7.5 | 30Β°C | 50 mM Bicyclo(2.2.2)octane-2,6-dione | (S)-2-(3-ketocyclohexyl)acetic acid | β | 120 rpm | Classical aqueous control (in %) |
| Activity - Classical | Activity measured by HPLC in the presence of organic solvent | n-Hexane | 80% | 100 | 43 | % | 50 mM phosphate buffer | 7.5 | 30Β°C | 50 mM Bicyclo(2.2.2)octane-2,6-dione | (S)-2-(3-ketocyclohexyl)acetic acid | β | 120 rpm | Classical aqueous control (in %) |
| Activity - Classical | Activity measured by HPLC in the presence of organic solvent | Diethyl Ether | 80% | 100 | 47 | % | 50 mM phosphate buffer | 7.5 | 30Β°C | 50 mM Bicyclo(2.2.2)octane-2,6-dione | (S)-2-(3-ketocyclohexyl)acetic acid | β | 120 rpm | Classical aqueous control (in %) |
| Activity - Classical | Activity measured by HPLC in the presence of organic solvent | Toluene | 80% | 100 | 50 | % | 50 mM phosphate buffer | 7.5 | 30Β°C | 50 mM Bicyclo(2.2.2)octane-2,6-dione | (S)-2-(3-ketocyclohexyl)acetic acid | β | 120 rpm | Classical aqueous control (in %) |
| Activity - Classical | Activity measured by HPLC in the presence of organic solvent | Ethyl Acetate | 80% | 100 | 14 | % | 50 mM phosphate buffer | 7.5 | 30Β°C | 50 mM Bicyclo(2.2.2)octane-2,6-dione | (S)-2-(3-ketocyclohexyl)acetic acid | β | 120 rpm | Classical aqueous control (in %) |
| Activity - Classical | Activity measured by HPLC in the presence of organic solvent | Tetrahydrofuran (THF) | 80% | 100 | 0 | % | 50 mM phosphate buffer | 7.5 | 30Β°C | 50 mM Bicyclo(2.2.2)octane-2,6-dione | (S)-2-(3-ketocyclohexyl)acetic acid | β | 120 rpm | Classical aqueous control (in %) |
| Activity - Classical | Activity measured by HPLC in the presence of organic solvent | Glycerol | 80% | 100 | 4 | % | 50 mM phosphate buffer | 7.5 | 30Β°C | 50 mM Bicyclo(2.2.2)octane-2,6-dione | (S)-2-(3-ketocyclohexyl)acetic acid | β | 120 rpm | Classical aqueous control (in %) |
| Activity - Classical | Activity measured by HPLC in the presence of organic solvent | Ethylene Glycol | 80% | 100 | 7 | % | 50 mM phosphate buffer | 7.5 | 30Β°C | 50 mM Bicyclo(2.2.2)octane-2,6-dione | (S)-2-(3-ketocyclohexyl)acetic acid | β | 120 rpm | Classical aqueous control (in %) |
| Activity - Classical | Activity measured by HPLC in the presence of organic solvent | Acetonitrile | 80% | 100 | 0 | % | 50 mM phosphate buffer | 7.5 | 30Β°C | 50 mM Bicyclo(2.2.2)octane-2,6-dione | (S)-2-(3-ketocyclohexyl)acetic acid | β | 120 rpm | Classical aqueous control (in %) |
| Activity - Classical | Activity measured by HPLC in the presence of organic solvent | Acetone | 80% | 100 | 4 | % | 50 mM phosphate buffer | 7.5 | 30Β°C | 50 mM Bicyclo(2.2.2)octane-2,6-dione | (S)-2-(3-ketocyclohexyl)acetic acid | β | 120 rpm | Classical aqueous control (in %) |
| Specificity - Enantioselectivity | Enantiomeric excess (toward the S form) after 3 hours of incubation in the presence of organic solvent, measured by HPLC | Acetone | 80% | 93 | 4 | % | 50 mM phosphate buffer | 7.5 | 30Β°C | 50 mM Bicyclo(2.2.2)octane-2,6-dione | (S)-2-(3-ketocyclohexyl)acetic acid | β | 120 rpm | Classical aqueous control (in %) |
| Specificity - Enantioselectivity | Enantiomeric excess (toward the S form) after 3 hours of incubation in the presence of organic solvent, measured by HPLC | Petroleum Ether | 80% | 93 | 82 | % | 50 mM phosphate buffer | 7.5 | 30Β°C | 50 mM Bicyclo(2.2.2)octane-2,6-dione | (S)-2-(3-ketocyclohexyl)acetic acid | β | 120 rpm | Classical aqueous control (in %) |
| Specificity - Enantioselectivity | Enantiomeric excess (toward the S form) after 3 hours of incubation in the presence of organic solvent, measured by HPLC | Diisopropyl Ether | 80% | 93 | 75 | % | 50 mM phosphate buffer | 7.5 | 30Β°C | 50 mM Bicyclo(2.2.2)octane-2,6-dione | (S)-2-(3-ketocyclohexyl)acetic acid | β | 120 rpm | Classical aqueous control (in %) |
| Specificity - Enantioselectivity | Enantiomeric excess (toward the S form) after 3 hours of incubation in the presence of organic solvent, measured by HPLC | tert-Butyl Methyl Ether (MTBE) | 80% | 93 | 64 | % | 50 mM phosphate buffer | 7.5 | 30Β°C | 50 mM Bicyclo(2.2.2)octane-2,6-dione | (S)-2-(3-ketocyclohexyl)acetic acid | β | 120 rpm | Classical aqueous control (in %) |
| Specificity - Enantioselectivity | Enantiomeric excess (toward the S form) after 3 hours of incubation in the presence of organic solvent, measured by HPLC | n-Hexane | 80% | 93 | 43 | % | 50 mM phosphate buffer | 7.5 | 30Β°C | 50 mM Bicyclo(2.2.2)octane-2,6-dione | (S)-2-(3-ketocyclohexyl)acetic acid | β | 120 rpm | Classical aqueous control (in %) |
| Specificity - Enantioselectivity | Enantiomeric excess (toward the S form) after 3 hours of incubation in the presence of organic solvent, measured by HPLC | Diethyl Ether | 80% | 93 | 47 | % | 50 mM phosphate buffer | 7.5 | 30Β°C | 50 mM Bicyclo(2.2.2)octane-2,6-dione | (S)-2-(3-ketocyclohexyl)acetic acid | β | 120 rpm | Classical aqueous control (in %) |
| Specificity - Enantioselectivity | Enantiomeric excess (toward the S form) after 3 hours of incubation in the presence of organic solvent, measured by HPLC | Toluene | 80% | 93 | 50 | % | 50 mM phosphate buffer | 7.5 | 30Β°C | 50 mM Bicyclo(2.2.2)octane-2,6-dione | (S)-2-(3-ketocyclohexyl)acetic acid | β | 120 rpm | Classical aqueous control (in %) |
Visualization : Activity β Classical
One bar per measurement. Colour = solvent, shade = solvent volume.
Visualization : Specificity β Enantioselectivity
One bar per measurement. Colour = solvent, shade = solvent volume.