| 2O97: reference: Spiral structure of Escherichia coli HU{alpha}beta provides foundation for DNA supercoiling., Guo F, Adhya S, Proc Natl Acad Sci U S A. 2007 Mar 13;104(11):4309-14. Epub 2007 Mar 5. PMID: 17360520 |
This OCA 
Structure page
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(documentation).