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Figure 3
Binding of succinyl-phosphate to E105αQ GTPSCS. The maps show the binding of succinyl-phosphate, a magnesium ion, water molecules and the side chain of Gln105α. Succinyl-phosphate and part of desulfo-CoA are shown as sticks with yellow C atoms. The magnesium ion and water molecules are shown as black and red spheres, with ionic interactions represented by dashed lines. Portions of the α-subunit are represented by a purple ribbon diagram with the side chain of Gln105α and the active-site histidine, His259α, shown as sticks with purple C atoms. Other atoms are coloured according to type. (a) The omit map is contoured in light green at 3σ. Distances for the ionic interactions are given in Å. (b) The Fo − Fc map is contoured in light green at 3σ and the 2Fo − Fc map is contoured in blue at 1σ. This figure and Figs. 4[link], 6[link] and 7[link] were drawn using PyMOL (version 2.4.0; Schrödinger).

Journal logoSTRUCTURAL BIOLOGY
COMMUNICATIONS
ISSN: 2053-230X
Volume 78| Part 10| October 2022| Pages 363-370
https://doi.org/10.1107/S2053230X22008810
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