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| | <StructureSection load='3fbw' size='340' side='right'caption='[[3fbw]], [[Resolution|resolution]] 1.23Å' scene=''> | | <StructureSection load='3fbw' size='340' side='right'caption='[[3fbw]], [[Resolution|resolution]] 1.23Å' scene=''> |
| | == Structural highlights == | | == Structural highlights == |
| - | <table><tr><td colspan='2'>[[3fbw]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/"bacterium_mycoides_roseum"_grotenfelt_1889 "bacterium mycoides roseum" grotenfelt 1889]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3FBW OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=3FBW FirstGlance]. <br> | + | <table><tr><td colspan='2'>[[3fbw]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Rhodococcus_rhodochrous Rhodococcus rhodochrous]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3FBW OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=3FBW FirstGlance]. <br> |
| - | </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=BEZ:BENZOIC+ACID'>BEZ</scene>, <scene name='pdbligand=CL:CHLORIDE+ION'>CL</scene>, <scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene></td></tr> | + | </td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 1.23Å</td></tr> |
| - | <tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat"><div style='overflow: auto; max-height: 3em;'>[[3g9x|3g9x]], [[3fwh|3fwh]]</div></td></tr>
| + | <tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=BEZ:BENZOIC+ACID'>BEZ</scene>, <scene name='pdbligand=CL:CHLORIDE+ION'>CL</scene>, <scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene></td></tr> |
| - | <tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">dhaA ([https://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=1829 "Bacterium mycoides roseum" Grotenfelt 1889])</td></tr> | + | |
| - | <tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[https://en.wikipedia.org/wiki/Haloalkane_dehalogenase Haloalkane dehalogenase], with EC number [https://www.brenda-enzymes.info/php/result_flat.php4?ecno=3.8.1.5 3.8.1.5] </span></td></tr> | + | |
| | <tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=3fbw FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3fbw OCA], [https://pdbe.org/3fbw PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=3fbw RCSB], [https://www.ebi.ac.uk/pdbsum/3fbw PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=3fbw ProSAT]</span></td></tr> | | <tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=3fbw FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3fbw OCA], [https://pdbe.org/3fbw PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=3fbw RCSB], [https://www.ebi.ac.uk/pdbsum/3fbw PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=3fbw ProSAT]</span></td></tr> |
| | </table> | | </table> |
| | == Function == | | == Function == |
| - | [[https://www.uniprot.org/uniprot/DHAA_RHORH DHAA_RHORH]] Catalyzes hydrolytic cleavage of carbon-halogen bonds in halogenated aliphatic compounds, leading to the formation of the corresponding primary alcohols, halide ions and protons. Expresses halogenase activity against 1-chloroalkanes of chain length C3 to C10, and also shows a very weak activity with 1,2-dichloroethane.
| + | [https://www.uniprot.org/uniprot/DHAA_RHORH DHAA_RHORH] Catalyzes hydrolytic cleavage of carbon-halogen bonds in halogenated aliphatic compounds, leading to the formation of the corresponding primary alcohols, halide ions and protons. Expresses halogenase activity against 1-chloroalkanes of chain length C3 to C10, and also shows a very weak activity with 1,2-dichloroethane. |
| | == Evolutionary Conservation == | | == Evolutionary Conservation == |
| | [[Image:Consurf_key_small.gif|200px|right]] | | [[Image:Consurf_key_small.gif|200px|right]] |
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| | __TOC__ | | __TOC__ |
| | </StructureSection> | | </StructureSection> |
| - | [[Category: Bacterium mycoides roseum grotenfelt 1889]] | |
| - | [[Category: Haloalkane dehalogenase]] | |
| | [[Category: Large Structures]] | | [[Category: Large Structures]] |
| - | [[Category: Dohnalek, J]] | + | [[Category: Rhodococcus rhodochrous]] |
| - | [[Category: Gavira, J A]] | + | [[Category: Dohnalek J]] |
| - | [[Category: Kuty, M]] | + | [[Category: Gavira JA]] |
| - | [[Category: Smatanova, I Kuta]] | + | [[Category: Kuta Smatanova I]] |
| - | [[Category: Stsiapanava, A]] | + | [[Category: Kuty M]] |
| - | [[Category: Alpha/beta-hydrolase]] | + | [[Category: Stsiapanava A]] |
| - | [[Category: Catalytic triad]]
| + | |
| - | [[Category: Detoxification]]
| + | |
| - | [[Category: Halide-binding site]]
| + | |
| - | [[Category: Hydrolase]]
| + | |
| Structural highlights
Function
DHAA_RHORH Catalyzes hydrolytic cleavage of carbon-halogen bonds in halogenated aliphatic compounds, leading to the formation of the corresponding primary alcohols, halide ions and protons. Expresses halogenase activity against 1-chloroalkanes of chain length C3 to C10, and also shows a very weak activity with 1,2-dichloroethane.
Evolutionary Conservation
Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf.
Publication Abstract from PubMed
The haloalkane dehalogenase DhaA from Rhodococcus rhodochrous NCIMB 13064 is a bacterial enzyme that shows catalytic activity for the hydrolytic degradation of the highly toxic industrial pollutant 1,2,3-trichloropropane (TCP). Mutagenesis focused on the access tunnels of DhaA produced protein variants with significantly improved activity towards TCP. Three mutants of DhaA named DhaA04 (C176Y), DhaA14 (I135F) and DhaA15 (C176Y + I135F) were constructed in order to study the functional relevance of the tunnels connecting the buried active site of the protein with the surrounding solvent. All three protein variants were crystallized using the sitting-drop vapour-diffusion technique. The crystals of DhaA04 belonged to the orthorhombic space group P2(1)2(1)2(1), while the crystals of DhaA14 and DhaA15 had triclinic symmetry in space group P1. The crystal structures of DhaA04, DhaA14 and DhaA15 with ligands present in the active site were solved and refined using diffraction data to 1.23, 0.95 and 1.22 A, resolution, respectively. Structural comparisons of the wild type and the three mutants suggest that the tunnels play a key role in the processes of ligand exchange between the buried active site and the surrounding solvent.
Atomic resolution studies of haloalkane dehalogenases DhaA04, DhaA14 and DhaA15 with engineered access tunnels.,Stsiapanava A, Dohnalek J, Gavira JA, Kuty M, Koudelakova T, Damborsky J, Kuta Smatanova I Acta Crystallogr D Biol Crystallogr. 2010 Sep;66(Pt 9):962-9. Epub 2010, Aug 13. PMID:20823547[1]
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.
See Also
References
- ↑ Stsiapanava A, Dohnalek J, Gavira JA, Kuty M, Koudelakova T, Damborsky J, Kuta Smatanova I. Atomic resolution studies of haloalkane dehalogenases DhaA04, DhaA14 and DhaA15 with engineered access tunnels. Acta Crystallogr D Biol Crystallogr. 2010 Sep;66(Pt 9):962-9. Epub 2010, Aug 13. PMID:20823547 doi:10.1107/S0907444910027101
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