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Sedimentation velocity experiments of ExsAH/ExsD and HExsA/ExsD. A, superimposition, for ExsAH/ExsD at 0.95 mg/ml, of selected experimental sedimentation profiles obtained at 280 nm during 4 h at 42,000 rpm, at 20 °C, in a 3 mm cell. B, corresponding residuals. C, result of the c(s) analysis for ExsAH/ExsD at 0.95 and 0.45 mg/ml (solid and dashed lines, respectively). D, result of the c(s) analysis for HExsA/ExsD at 0.09 and 0.05 mg/ml (solid and dashed lines, respectively).
