4EHX:
reference: Crystal structure of LpxK, the 4'-kinase of lipid A biosynthesis and atypical P-loop kinase functioning at the membrane interface., Emptage RP, Daughtry KD, Pemble CW 4th, Raetz CR, Proc Natl Acad Sci U S A. 2012 Aug 7;109(32):12956-61. Epub 2012 Jul 23. PMID: 22826246

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