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Principal component analysis of P450cam crystal structures. (A) 2D plot of the first two principal components for each structure. Data points representing repeat structures are shown in different colors: camphor (purple), AdaC1-C8-Dans (red), AdaC2-C8-Dans (orange) and substrate-free open conformations (green). (B) The contribution of each residue in the sequence to the first (black) and the second (red) principal components.
