2dln

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[[Image:2dln.jpg|left|200px]]
 
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{{Structure
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==VANCOMYCIN RESISTANCE: STRUCTURE OF D-ALANINE:D-ALANINE LIGASE AT 2.3 ANGSTROMS RESOLUTION==
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|PDB= 2dln |SIZE=350|CAPTION= <scene name='initialview01'>2dln</scene>, resolution 2.3&Aring;
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<StructureSection load='2dln' size='340' side='right'caption='[[2dln]], [[Resolution|resolution]] 2.30&Aring;' scene=''>
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|SITE=
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== Structural highlights ==
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|LIGAND= <scene name='pdbligand=ADP:ADENOSINE-5&#39;-DIPHOSPHATE'>ADP</scene>, <scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene>, <scene name='pdbligand=PHY:1(S)-AMINOETHYL-(2-CARBOXYPROPYL)PHOSPHORYL-PHOSPHINIC+ACID'>PHY</scene>
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<table><tr><td colspan='2'>[[2dln]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Escherichia_coli Escherichia coli]. The December 2015 RCSB PDB [https://pdb.rcsb.org/pdb/static.do?p=education_discussion/molecule_of_the_month/index.html Molecule of the Month] feature on ''Vancomycin'' by David Goodsell is [https://dx.doi.org/10.2210/rcsb_pdb/mom_2015_12 10.2210/rcsb_pdb/mom_2015_12]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2DLN OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2DLN FirstGlance]. <br>
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|ACTIVITY= <span class='plainlinks'>[http://en.wikipedia.org/wiki/D-alanine--D-alanine_ligase D-alanine--D-alanine ligase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=6.3.2.4 6.3.2.4] </span>
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</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 2.3&#8491;</td></tr>
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|GENE=
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<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=ADP:ADENOSINE-5-DIPHOSPHATE'>ADP</scene>, <scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene>, <scene name='pdbligand=PHY:1(S)-AMINOETHYL-(2-CARBOXYPROPYL)PHOSPHORYL-PHOSPHINIC+ACID'>PHY</scene></td></tr>
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|DOMAIN=
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<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=2dln FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2dln OCA], [https://pdbe.org/2dln PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2dln RCSB], [https://www.ebi.ac.uk/pdbsum/2dln PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2dln ProSAT]</span></td></tr>
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|RELATEDENTRY=
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</table>
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|RESOURCES=<span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2dln FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2dln OCA], [http://www.ebi.ac.uk/pdbsum/2dln PDBsum], [http://www.rcsb.org/pdb/explore.do?structureId=2dln RCSB]</span>
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== Function ==
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}}
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[https://www.uniprot.org/uniprot/DDLB_ECOLI DDLB_ECOLI] Cell wall formation.
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== Evolutionary Conservation ==
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[[Image:Consurf_key_small.gif|200px|right]]
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Check<jmol>
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<jmolCheckbox>
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<scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/dl/2dln_consurf.spt"</scriptWhenChecked>
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<scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked>
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<text>to colour the structure by Evolutionary Conservation</text>
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</jmolCheckbox>
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</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=2dln ConSurf].
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<div style="clear:both"></div>
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'''VANCOMYCIN RESISTANCE: STRUCTURE OF D-ALANINE:D-ALANINE LIGASE AT 2.3 ANGSTROMS RESOLUTION'''
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==See Also==
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*[[D-alanine-D-alanine ligase 3D structures|D-alanine-D-alanine ligase 3D structures]]
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__TOC__
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==Overview==
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</StructureSection>
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The molecular structure of the D-alanine:D-alanine ligase of the ddlB gene of Escherichia coli, co-crystallized with an S,R-methylphosphinate and adenosine triphosphate, was determined by x-ray diffraction to a resolution of 2.3 angstroms. A catalytic mechanism for the ligation of two D-alanine substrates is proposed in which a helix dipole and a hydrogen-bonded triad of tyrosine, serine, and glutamic acid assist binding and deprotonation steps. From sequence comparison, it is proposed that a different triad exists in a recently discovered D-alanine:D-lactate ligase (VanA) present in vancomycin-resistant enterococci. A molecular mechanism for the altered specificity of VanA is suggested.
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==About this Structure==
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2DLN is a [[Single protein]] structure of sequence from [http://en.wikipedia.org/wiki/Escherichia_coli Escherichia coli]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2DLN OCA].
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==Reference==
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Vancomycin resistance: structure of D-alanine:D-alanine ligase at 2.3 A resolution., Fan C, Moews PC, Walsh CT, Knox JR, Science. 1994 Oct 21;266(5184):439-43. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/7939684 7939684]
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[[Category: D-alanine--D-alanine ligase]]
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[[Category: Escherichia coli]]
[[Category: Escherichia coli]]
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[[Category: Single protein]]
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[[Category: Large Structures]]
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[[Category: Fan, C.]]
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[[Category: RCSB PDB Molecule of the Month]]
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[[Category: Knox, J R.]]
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[[Category: Vancomycin]]
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[[Category: Moews, P C.]]
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[[Category: Fan C]]
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[[Category: ligase(peptidoglycan synthesis)]]
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[[Category: Knox JR]]
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[[Category: Moews PC]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Mon Mar 31 02:36:17 2008''
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Current revision

VANCOMYCIN RESISTANCE: STRUCTURE OF D-ALANINE:D-ALANINE LIGASE AT 2.3 ANGSTROMS RESOLUTION

PDB ID 2dln

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