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. 2010 Jan 20;98(2):305–314. doi: 10.1016/j.bpj.2009.10.016

Figure 5.

Figure 5

Change in the conformation of Arg-130 and its interactions between the apo and holo structures. (A) Conformation as seen in the E. coli holo structure, where Arg-123 is seen to form ionic interactions with Glu-72 and Asp-68 on either side of its guanidino group. It also interacts with the main carbonyl of residue 69 of β-strand 6. (B) The conformation as seen in the M. tuberculosis apo structure, where the interactions of Arg-130 with Asp-76 and the main-chain carbonyl of residue 77 are now lost.