ArticleActa crystallographica. Section D, Structural biology2023
Conformation-based refinement of 18-mer DNA structures.
Article in Acta crystallographica. Section D, Structural biology, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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1 citing paper in PubMed.
- DNATCO v5.0: integrated web platform for 3D nucleic acid structure analysis.Nucleic acids research · 2026Article
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7 authors.
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Abstract
Nine new crystal structures of CG-rich DNA 18-mers with the sequence 5'-GGTGGGGGC-XZ-GCCCCACC-3', which are related to the bacterial repetitive extragenic palindromes, are reported. 18-mer oligonucleotides with the central XZ dinucleotide systematically mutated to all 16 sequences show complex behavior in solution, but all ten so far successfully crystallized 18-mers crystallized as A-form duplexes. The refinement protocol benefited from the recurrent use of geometries of the dinucleotide conformer (NtC) classes as refinement restraints in regions of poor electron density. The restraints are automatically generated at the dnatco.datmos.org web service and are available for download. This NtC-driven protocol significantly helped to stabilize the structure refinement. The NtC-driven refinement protocol can be adapted to other low-resolution data such as cryo-EM maps. To test the quality of the final structural models, a novel validation method based on comparison of the electron density and conformational similarity to the NtC classes was employed.
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