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Un clavo al ataúd de la bacteria que metabolizaba arsénico

a, A close-up view of the short hydrogen bond ((−)CAHB, or LBHB) between O2 of the bound phosphate and the carboxylate of Asp 62 (pH 8.5; PDB 4F1V). The shared hydrogen atom is revealed by the omit-H Fourier difference map (blue mesh) contoured at 2.5σ (peak height 3.3σ). b, The same bond in the arsenate-bound structure, […]