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Myoglobin. (a) Heme (iron, brown; oxygen, red; nitrogen, blue), no laser (green molecule, cyan map); (b) heme, plus laser (cyan molecule, magenta map); (c) heme, no laser; (d) heme, plus laser; (e) Trp7, no laser; (f) Trp7, plus laser; (g) Tyr146, no laser; (h) Tyr146, plus laser. Figures were made with PyMOL (DeLano, 2002 ▶).
