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Figure 3. A 5 bp difference between short linkers is predicted to have a strong effect on chromatin fiber architecture. Flexible wire models1 for DNA geometry in tetranucleosomes with linker DNA length L = 22 (A) and 27 (B) and in compact 12-mer nucleosome fibers with linker DNA length L = 22 (C) and 27 (D). The arrows show the points of contacts that limit the longitudinal compaction of the fiber. The dashed lines show the 30 nm fiber axis.
