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Cartoon of the T structure of deoxy-Hb (βV1M) (1dxu.pdb), with the 17 valine residues in the β-chain indicated and classified according to the calculated theoretical pseudocontact shift for R state fluoromet-Hb, as described in the text: blue, helices B, D, and E; yellow, helices A, C, and F; green, helices G and H.
