4EYY:
reference: IcmQ in the Type 4b secretion system contains an NAD+ binding domain., Farelli JD, Gumbart JC, Akey IV, Hempstead A, Amyot W, Head JF, McKnight CJ, Isberg RR, Akey CW, Structure. 2013 Aug 6;21(8):1361-73. doi: 10.1016/j.str.2013.05.017. Epub 2013, Jul 11. PMID: 23850453

This OCA Structure page
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