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Figure 5
A salt bridge between Glu57 and Lys5′ stabilizes the packing of the trimers into the dodecamer. The carboxyl group of Glu57 is one of the most X-ray sensitive parts of the structure, as shown by an Fo (data set A) − Fo (data set C) difference map, contoured at ±7σ.

Journal logoJOURNAL OF
SYNCHROTRON
RADIATION
ISSN: 1600-5775
Volume 12| Part 3| April 2005| Pages 268-275
doi:10.1107/S0909049505003262
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