Fig. 2

Features conserved between SecY’s halves. a Consensus secondary structure elements (grey) in Methanocaldococcus jannaschii SecY (1rhz). Stars indicate where the halves were split. b Symmetric features in the most self-similar SecY structure (6itc). A pointed oval indicates the pseudo-C₂ symmetry axis. Dashed lines indicate hydrogen bonds (blue) and Van der Waals contacts (white). ConSurf variability scores for an alignment of the N- and C-half sequences are shown mapped onto each half’s model. The colour scale encompasses the minimum but not maximum score. The most conserved residues are shown as sticks and labelled