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Location of the Walker-A Thr in the nucleotide-binding site of ClpB. Shown is a fragment of the AMP-PNP-bound D1 from T. thermophilus ClpB.5 The nucleotide is shown using a stick representation. The Walker-A Lys (cyan) and Thr (red) are shown in space-fill representation. The rest of P-loop is shown in magenta.
