Figure 6
Comparison of the density maps of the peptide fragment Lys220–Ile254 from chain A of (a) the ERG10 and (b) the Cys91Ala mutant biosynthetic thiolases. The maps are weighted 2Fo − Fc maps contoured at 1.0σ and were calculated after refinement. The electron density in the blue ellipse is well defined in the Cys91Ala mutant but is missing in ERG10. |