Figure 5

Structural comparison. (a) Superimposition of GacSPD (colored secondary structure) and two structural homologues, E. coli DcuSp (dark grey), and K. pneumonia CitAp (light grey). (b) Close-up views of the conservation pattern made by the two positively-charged residues between GacSPD, CitAp and DcuSp. (c) Structural sequence alignment of GacSPD, CitAp and DcuSp. The conserved Arg and His residues are highlighted with orange stars.