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Figure 4
Movement of the His181 side chain. (a) Cartoon diagram showing superposition of various subunits of the uracil complex. The uracil and active-site residues are shown as lines (gray, except for His181, which is colored by atom: C, magenta; N, blue; O, red). The region of the leucine-intercalation loop is colored red (labeled `Leu loop'). (b) Close-up view of His181 and uracil (both labeled) in the active site of various subunits.

Journal logoSTRUCTURAL BIOLOGY
COMMUNICATIONS
ISSN: 2053-230X
Volume 69| Part 12| November 2013| Pages 1328-1334
doi:10.1107/S1744309113030613
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