2dln | pdb_00002dln

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

spinqualitylabelsall models 2dln, resolution 2.30Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 2dln is a 1 chain structure with sequence from Escherichia coli. The December 2015 RCSB PDB Molecule of the Month feature on Vancomycin by David Goodsell is 10.2210/rcsb_pdb/mom_2015_12. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Ligands: ADP, MG, PHY Activity: D-alanine--D-alanine ligase, with EC number 6.3.2.4 Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Function [DDLB_ECOLI] Cell wall formation. 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 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. 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:7939684 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See Also D-alanine-D-alanine ligase 3D structures

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