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. Author manuscript; available in PMC: 2014 Mar 3.
Published in final edited form as: Structure. 2013 Aug 15;21(9):10.1016/j.str.2013.07.005. doi: 10.1016/j.str.2013.07.005

Figure 4. Comparison of the active center in the HK-RR and HK*-RR* complexes.

Figure 4

Close-up view of the active center with a superposition of HK-RR (in cyan) and HK*-RR* (in orange) in cartoon representation. The phosphorylatable residues H260 and D53, residue M55, and the bound ligands (sulfate (SO4) in the HK-RR complex and beryllium trifluoride (BeF3) in the HK*-RR* complex) are shown as sticks. Distances are shown by dashed lines; in black color for Cα of H260 in HK-RR with the sulfur atom of SO4 (8.3 Å) and for Cα of H260 in HK*-RR* with the Be atom of BeF3 (7.9 Å); in red color for εN of H260 in HK-RR with the sulfur atom of SO4 (4.8 Å) and with the Be atom of BeF3− (3.6 Å). Also see Figures S4–S6.