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MCD studies of PAH. (A) MCD spectra of resting PAH (black) with substrate-bound (blue), pterin-bound (green) and substrate/pterin-bound (red). All spectra were collected at 5 K. (B) VTVH MCD data for resting (left) and substrate/pterin-bound (right) PAH. (C) Derived d-orbital energy level diagrams.
