I will introduce our web application dnatco.datmos.org, which enables an in-depth analysis and validation of nucleic acid structures, primarily based on the assignment of dinucleotide conformers. The web service was introduced for the first time in 2016 [1] but has been quite significantly redesigned and its functionality extended. We developed several new tools for annotation and validation of nucleic acids that are all based on the concept of the dinucleotide conformational classes, NtC [2]. One of the new validation tools are scattergrams correlating the geometries of dinucleotides and their fit to the experimental electron density, RSCC-rmsd plots. We also validate quality of the covalent geometry of analyzed nucleic acids by comparing values of their bond lengths and angles to values expected in a curated set of PDB-deposited structures. The web service dnatco.datmos.org is based on the C++ backend programs for the NtC assignment and runs most user demanded calculations on the user computer; it uses customized Molstar viewer [3].
This research was funded by Czech Academy of Sciences, grant RVO 86652036 and by grant LM2023055 to ELIXIR CZ from MEYS Czech Republic.