Fig. 6From: Functional differentiation of 3-ketosteroid Δ1-dehydrogenase isozymes in Rhodococcus ruber strain Chol-4Modelling of the active site of KstDs. The orientation of the four key residues in the KstD binding pocket is shown. They are superposed and depicted in different colours: green for KstD1, blue for KstD2 and red for KstD3. Only KsD1 residues are named, their counterpart homologues residues of KstD2 and KstD3 being listed in Tables 2 and 3 Back to article page