3UN0:
reference: The molecular basis of ATM-dependent dimerization of the Mdc1 DNA damage checkpoint mediator., Jungmichel S, Clapperton JA, Lloyd J, Hari FJ, Spycher C, Pavic L, Li J, Haire LF, Bonalli M, Larsen DH, Lukas C, Lukas J, MacMillan D, Nielsen ML, Stucki M, Smerdon SJ, Nucleic Acids Res. 2012 May;40(9):3913-28. Epub 2012 Jan 10. PMID: 22234878

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