2ygy

Structure of wild type E. coli N-acetylneuraminic acid lyase in space group P21 crystal form II

spinqualitylabelsall models 2ygy, resolution 1.90Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 2ygy is a 4 chain structure with sequence from Escherichia coli BL21(DE3). Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Method: X-ray diffraction, Resolution 1.9Å Ligands: 1PE, CL Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Function NANA_ECOLI Catalyzes the cleavage of N-acetylneuraminic acid (sialic acid) to form pyruvate and N-acetylmannosamine via a Schiff base intermediate.[HAMAP-Rule:MF_01237] Publication Abstract from PubMed Twinning is a crystal growth anomaly, which has posed a challenge in macromolecular crystallography (MX) since the earliest days. Many approaches have been used to treat twinned data in order to extract structural information. However, in most cases it is usually simpler to rescreen for new crystallization conditions that yield an untwinned crystal form or, if possible, collect data from non-twinned parts of the crystal. Here, we report 11 structures of engineered variants of the E. coli enzyme N-acetyl-neuraminic lyase which, despite twinning and incommensurate modulation, have been successfully indexed, solved and deposited. These structures span a resolution range of 1.45-2.30 A, which is unusually high for datasets presenting such lattice disorders in MX and therefore these data provide an excellent test set for improving and challenging MX data processing programs. Pathological macromolecular crystallographic data affected by twinning, partial-disorder and exhibiting multiple lattices for testing of data processing and refinement tools.,Campeotto I, Lebedev A, Schreurs AMM, Kroon-Batenburg LMJ, Lowe E, Phillips SEV, Murshudov GN, Pearson AR Sci Rep. 2018 Oct 5;8(1):14876. doi: 10.1038/s41598-018-32962-6. PMID:30291262 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See Also N-acetylneuraminate lyase 3D structures

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