2KFU:
reference: An intramolecular switch regulates phosphoindependent FHA domain interactions in Mycobacterium tuberculosis., Nott TJ, Kelly G, Stach L, Li J, Westcott S, Patel D, Hunt DM, Howell S, Buxton RS, O'Hare HM, Smerdon SJ, Sci Signal. 2009 Mar 24;2(63):ra12. PMID: 19318624

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