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[[Image:1aq6.jpg|left|200px]]<br /><applet load="1aq6" size="350" color="white" frame="true" align="right" spinBox="true"
caption="1aq6, resolution 1.95&Aring;" />
'''STRUCTURE OF L-2-HALOACID DEHALOGENASE FROM XANTHOBACTER AUTOTROPHICUS'''<br />


==Overview==
==STRUCTURE OF L-2-HALOACID DEHALOGENASE FROM XANTHOBACTER AUTOTROPHICUS==
The L-2-haloacid dehalogenase from the 1,2-dichloroethane degrading bacterium Xanthobacter autotrophicus GJ10 catalyzes the hydrolytic dehalogenation of small L-2-haloalkanoic acids to yield the corresponding D-2-hydroxyalkanoic acids. Its crystal structure was solved by the method of multiple isomorphous replacement with incorporation of anomalous scattering information and solvent flattening, and was refined at 1.95-A resolution to an R factor of 21.3%. The three-dimensional structure is similar to that of the homologous L-2-haloacid dehalogenase from Pseudomonas sp. YL (1), but the X. autotrophicus enzyme has an extra dimerization domain, an active site cavity that is completely shielded from the solvent, and a different orientation of several catalytically important amino acid residues. Moreover, under the conditions used, a formate ion is bound in the active site. The position of this substrate-analogue provides valuable information on the reaction mechanism and explains the limited substrate specificity of the Xanthobacter L-2-haloacid dehalogenase.
<StructureSection load='1aq6' size='340' side='right'caption='[[1aq6]], [[Resolution|resolution]] 1.95&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[1aq6]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Xanthobacter_autotrophicus Xanthobacter autotrophicus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1AQ6 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1AQ6 FirstGlance]. <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]] 1.95&#8491;</td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=FMT:FORMIC+ACID'>FMT</scene></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=1aq6 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1aq6 OCA], [https://pdbe.org/1aq6 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1aq6 RCSB], [https://www.ebi.ac.uk/pdbsum/1aq6 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1aq6 ProSAT]</span></td></tr>
</table>
== Function ==
[https://www.uniprot.org/uniprot/HAD_XANAU HAD_XANAU] Catalyzes the hydrolytic dehalogenation of small L-2-haloalkanoic acids to yield the corresponding D-2-hydroxyalkanoic acids. Active with 2-halogenated carboxylic acids and converts only the L-isomer of 2-chloropropionic acid with inversion of configuration to produce D-lactate.
== Evolutionary Conservation ==
[[Image:Consurf_key_small.gif|200px|right]]
Check<jmol>
  <jmolCheckbox>
    <scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/aq/1aq6_consurf.spt"</scriptWhenChecked>
    <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked>
    <text>to colour the structure by Evolutionary Conservation</text>
  </jmolCheckbox>
</jmol>, as determined by [http://consurfdb.tau.ac.il/ ConSurfDB]. You may read the [[Conservation%2C_Evolutionary|explanation]] of the method and the full data available from [http://bental.tau.ac.il/new_ConSurfDB/main_output.php?pdb_ID=1aq6 ConSurf].
<div style="clear:both"></div>


==About this Structure==
==See Also==
1AQ6 is a [http://en.wikipedia.org/wiki/Single_protein Single protein] structure of sequence from [http://en.wikipedia.org/wiki/Xanthobacter_autotrophicus Xanthobacter autotrophicus] with <scene name='pdbligand=FMT:'>FMT</scene> as [http://en.wikipedia.org/wiki/ligand ligand]. Active as [http://en.wikipedia.org/wiki/(S)-2-haloacid_dehalogenase (S)-2-haloacid dehalogenase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=3.8.1.2 3.8.1.2] Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1AQ6 OCA].
*[[Dehalogenase 3D structures|Dehalogenase 3D structures]]
 
__TOC__
==Reference==
</StructureSection>
Three-dimensional structure of L-2-haloacid dehalogenase from Xanthobacter autotrophicus GJ10 complexed with the substrate-analogue formate., Ridder IS, Rozeboom HJ, Kalk KH, Janssen DB, Dijkstra BW, J Biol Chem. 1997 Dec 26;272(52):33015-22. PMID:[http://ispc.weizmann.ac.il//pmbin/getpm?pmid=9407083 9407083]
[[Category: Large Structures]]
[[Category: (S)-2-haloacid dehalogenase]]
[[Category: Single protein]]
[[Category: Xanthobacter autotrophicus]]
[[Category: Xanthobacter autotrophicus]]
[[Category: Dijkstra, B W.]]
[[Category: Dijkstra BW]]
[[Category: Kalk, K H.]]
[[Category: Kalk KH]]
[[Category: Ridder, I S.]]
[[Category: Ridder IS]]
[[Category: Rozeboom, H J.]]
[[Category: Rozeboom HJ]]
[[Category: FMT]]
[[Category: l-2-haloacid dehalogenase]]
 
''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu Feb 21 11:47:12 2008''

Latest revision as of 09:32, 7 February 2024

STRUCTURE OF L-2-HALOACID DEHALOGENASE FROM XANTHOBACTER AUTOTROPHICUSSTRUCTURE OF L-2-HALOACID DEHALOGENASE FROM XANTHOBACTER AUTOTROPHICUS

Structural highlights

1aq6 is a 2 chain structure with sequence from Xanthobacter autotrophicus. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Method:X-ray diffraction, Resolution 1.95Å
Ligands:
Resources:FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

HAD_XANAU Catalyzes the hydrolytic dehalogenation of small L-2-haloalkanoic acids to yield the corresponding D-2-hydroxyalkanoic acids. Active with 2-halogenated carboxylic acids and converts only the L-isomer of 2-chloropropionic acid with inversion of configuration to produce D-lactate.

Evolutionary Conservation

Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf.

See Also

1aq6, resolution 1.95Å

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