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. 2014 Dec 16;107(12):2911–2922. doi: 10.1016/j.bpj.2014.10.065

Table 1.

Results of a cluster analysis for all four histone tails

H4

Cluster Probability H-bonds Rg (nm) Neutral (9) Groove

1 0.72 9 1.07 7 1
2 0.13 8 1.10 6 1
3 0.11 8 1.16 6 1

H2A

Cluster Probability H-bonds Rg (nm) Neutral (5) Groove

1 0.71 2 0.75 5 0
2 0.20 2 0.87 4 1

H2B

Cluster Probability H-bonds Rg (nm) Neutral (15) Groove

1 0.29 10 1.06 11 2
2 0.27 12 1.11 9 2
3 0.22 11 1.08 10 2
4 0.11 6 1.09 10 2

H3

Cluster Probability H-bonds Rg (nm) Neutral (14) Groove

1 0.40 18 1.31 13 0
2 0.22 16 1.25 12 0
3 0.18 13 1.16 12 0

We present only clusters with a probability >0.1. Shown are number of hydrogen bonds between the histone tail residues (H-bonds), radius of gyration (Rg), and number of neutralized charges (Neutral) for each cluster representative, with the number of total positive charges on each histone tail in parentheses. The last column shows the number of residues found in the DNA groove.