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GTPase Active Sites, Related to Figure 5
(A) EM map density and model for GDP and GTP analogs in the indicated structures. eEF1A-bound GDP density is contoured at 7σ; Hbs1l-bound GMPPCP density is contoured at 6σ. Coordinating residues (pink) and magnesium ions (green) are indicated.
(B) Interactions of the sarcin-ricin loop (SRL) with the catalytic histidine (teal) of the indicated GTPase. The residues of the hydrophobic gate are indicated in yellow.
