FIGURE 7.

Conservation of the structural motifs of SpoIID. a, structural conservation of the α1α2α5 core of the α-domain of SpoIID with other proteins. b, superimposition of the core domains from CdSpoIID (gray), BaSPoIID (orange), BaSleB (purple), EcYgeG (cyan), EcSlt70 (yellow), and GEWL (red). c, sequence alignment based on structural superimposition of the three helices of the core domain from CdSpoIID, BaSleB, BcSleB EcYgeG, EcSlt70, and GEWL and the corresponding position of the catalytic glutamic acid in motif I.