Representative oligonucleosomes obtained from our simulation ensemble highlighting the differences in the global morphology and internal structure of chromatin at the four conditions investigated in this study: (a) low monovalent salt (loMS); (b) high monovalent salt (hiMS); (c) high monovalent salt + linker histones (MS-LH); and (d) high monovalent salt + linker histone + magnesium cations (MS-LH-Mg). For clarity, a 12-unit oligonucleosome is presented in (a) and 24-unit oligonucleosomes are presented in (b-d). In (c,d), odd and even numbered nucleosome cores are colored white and blue, respectively, to highlight the predominant i ± 2 interactions; and severely bent linker DNAs are colored green, as characterized by an angle of bending greater than 90°. This bending angle is defined by the angle formed between the linker DNA exiting one nucleosome and entering the next nucleosome.