This repository contains the data relative to the manuscripts: "Evidence for DNA Sequence Encoding of an Accessible Nucleosomal Array across Vertebrates" by Frédéric G. Brunet, Benjamin Audit, Guénola Drillon, Françoise Argoul, Jean-Nicolas Volff and Alain Arneodo. published in Biophysical Journal 114 (2018) (DOI: 10.1016/j.bpj.2018.02.025) and "Insertion of Alu elements impacts sequence-mediated nucleosome positionning" by Jérémy Barbier, Fabien Sassolas, Cédric Vaillant, Jean-Nicolas Volff, Frédéric G. Brunet and Benjamin Audit. pushlished in the Proceedings of the Journées Ouvertes en Biologie, Informatique et Mathématiques (JOBIM 2022). contact: benjamin.audit@ens-lyon.fr Each species is identified by its assembly version name as provided by UCSC genome browser (http://www.genome.ucsc.edu/). For each species a Zip archive is provided that contain one file per studied chromosome. Files are 2 column text files with the start and end position of each identified NIEBs (0-based, semi-open UCSC convention).