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. 2002 Sep 17;99(20):12639–12644. doi: 10.1073/pnas.152439599

Figure 4.

Figure 4

View of the Q-loop in the retracted (Left) and extended (Right) conformations illustrating the alteration in the spatial dispositions of QL1–QL4. The backbone Cα trace is shown with side chains in ball and stick representation. The extended Q-loop is from HisP (1B0U), the retracted Q-loop is the backbone conformation of the Q-loop from MJ1267 (1G6H) with the side chains “mutated” to those of HisP using the application SWISS PDBVIEWER (27), with the lowest energy rotamer selected in each case.