Preface (J. Zlatanova, S.H. Leuba). Chromatin structure and dynamics: a historical perspective (E.M. Bradbury, K.E. van Holde). The core particle of the nucleosome (J.M. Harp, B.L. Hanson, G.J. Bunick). Paradox lost: nucleosome structure and dynamics in the DNA minicircle approach (A. Prunell, A. Sivolob). The linker histones (A. Jerzmanowski). Chromosomal HMG-box proteins (A.A. Travers, J.O. Thomas). The role of HMGN proteins in chromatin function (K.L. West, M. Bustin). HMGA proteins: multifaceted players in nuclear function (R. Reeves, D. Edberg). Core histone variants (J.R. Pehrson). Histone modifications (J.R. Davie). The role of histone variability in chromatin stability and folding (J. Ausió, D.W. Abbott). Nucleosome modifications and their interaction; searching for a histone code(B.M. Turner). DNA methylation and chromatin structure (J. Zlatanova, I. Stancheva, P. Caiafa). Chromatin structure and function: lessons from imaging techniques (D.P. Bazett-Jones, C.H. Eskiw). Chromatin structure and dynamics: lessons from single molecule approaches (J. Zlatanova, S.H. Leuba). Theory and computational modeling of the 30 nm chromatin fiber (J. Langowski, H. Schiessel). Nucleosome remodeling (A.A. Travers, T. Owen-Hughes). What happens to nucleosomes during transcription?(V. Jackson).