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==Crystal structure of haloalkane dehalogenase DbeA from Bradyrhizobium elkani USDA94==
==Crystal structure of haloalkane dehalogenase DbeA from Bradyrhizobium elkani USDA94==
<StructureSection load='4k2a' size='340' side='right' caption='[[4k2a]], [[Resolution|resolution]] 2.20&Aring;' scene=''>
<StructureSection load='4k2a' size='340' side='right'caption='[[4k2a]], [[Resolution|resolution]] 2.20&Aring;' scene=''>
== Structural highlights ==
== Structural highlights ==
<table><tr><td colspan='2'>[[4k2a]] is a 4 chain structure. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4K2A OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=4K2A FirstGlance]. <br>
<table><tr><td colspan='2'>[[4k2a]] is a 4 chain structure with sequence from [https://en.wikipedia.org/wiki/Bradyrhizobium_elkanii Bradyrhizobium elkanii]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4K2A OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=4K2A FirstGlance]. <br>
</td></tr><tr><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=ACT:ACETATE+ION'>ACT</scene>, <scene name='pdbligand=CL:CHLORIDE+ION'>CL</scene><br>
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 2.2&#8491;</td></tr>
<tr><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[3a2m|3a2m]], [[2bn6|2bn6]], [[1cij|1cij]], [[2qvb|2qvb]], [[1cv2|1cv2]]</td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=ACT:ACETATE+ION'>ACT</scene>, <scene name='pdbligand=CL:CHLORIDE+ION'>CL</scene></td></tr>
<tr><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/Haloalkane_dehalogenase Haloalkane dehalogenase], with EC number [http://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=4k2a FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4k2a OCA], [https://pdbe.org/4k2a PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=4k2a RCSB], [https://www.ebi.ac.uk/pdbsum/4k2a PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=4k2a ProSAT]</span></td></tr>
<tr><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=4k2a FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4k2a OCA], [http://www.rcsb.org/pdb/explore.do?structureId=4k2a RCSB], [http://www.ebi.ac.uk/pdbsum/4k2a PDBsum]</span></td></tr>
</table>
<table>
== Function ==
<div style="background-color:#fffaf0;">
[https://www.uniprot.org/uniprot/E2RV62_BRAEL E2RV62_BRAEL] Catalyzes hydrolytic cleavage of carbon-halogen bonds in halogenated aliphatic compounds, leading to the formation of the corresponding primary alcohols, halide ions and protons (By similarity).[HAMAP-Rule:MF_01231]
== Publication Abstract from PubMed ==
The crystal structure of the novel haloalkane dehalogenase DbeA from Bradyrhizobium elkanii USDA94 revealed the presence of two chloride ions buried in the protein interior. The first halide-binding site is involved in substrate binding and is present in all structurally characterized haloalkane dehalogenases. The second halide-binding site is unique to DbeA. To elucidate the role of the second halide-binding site in enzyme functionality, a two-point mutant lacking this site was constructed and characterized. These substitutions resulted in a shift in the substrate-specificity class and were accompanied by a decrease in enzyme activity, stability and the elimination of substrate inhibition. The changes in enzyme catalytic activity were attributed to deceleration of the rate-limiting hydrolytic step mediated by the lower basicity of the catalytic histidine.
 
Structural and functional analysis of a novel haloalkane dehalogenase with two halide-binding sites.,Chaloupkova R, Prudnikova T, Rezacova P, Prokop Z, Koudelakova T, Daniel L, Brezovsky J, Ikeda-Ohtsubo W, Sato Y, Kuty M, Nagata Y, Kuta Smatanova I, Damborsky J Acta Crystallogr D Biol Crystallogr. 2014 Jul;70(Pt 7):1884-97. doi:, 10.1107/S1399004714009018. Epub 2014 Jun 29. PMID:25004965<ref>PMID:25004965</ref>
 
From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>


==See Also==
==See Also==
*[[Dehalogenase|Dehalogenase]]
*[[Dehalogenase 3D structures|Dehalogenase 3D structures]]
== References ==
<references/>
__TOC__
__TOC__
</StructureSection>
</StructureSection>
[[Category: Haloalkane dehalogenase]]
[[Category: Bradyrhizobium elkanii]]
[[Category: Chaloupkova, R.]]
[[Category: Large Structures]]
[[Category: Damborsky, J.]]
[[Category: Chaloupkova R]]
[[Category: Koudelakova, T.]]
[[Category: Damborsky J]]
[[Category: Kuty, M.]]
[[Category: Koudelakova T]]
[[Category: Mozga, T.]]
[[Category: Kuta Smatanova I]]
[[Category: Nagata, Y.]]
[[Category: Kuty M]]
[[Category: Prudnikova, T.]]
[[Category: Mozga T]]
[[Category: Rezacova, P.]]
[[Category: Nagata Y]]
[[Category: S2F, Structure 2.Function Project.]]
[[Category: Prudnikova T]]
[[Category: Sato, Y.]]
[[Category: Rezacova P]]
[[Category: Smatanova, I Kuta.]]
[[Category: Sato Y]]
[[Category: Dimer catalytic pentad]]
[[Category: Enzyme function initiative]]
[[Category: Halogen binding]]
[[Category: Hydrolase]]
[[Category: S2f]]
[[Category: Structural genomic]]
[[Category: Structure 2 function project]]
[[Category: Two domain organization]]
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