Figure 5. Multiple sequence alignment of PscD-SD with other known single Cache chemoreceptor sensor domains.

The alignment was performed using MUSCLE with shading in T_EXShade by L^AT_EX 2_ε using shading mode similar. Sequences are labelled by species abbreviation and either protein name or PDB code. Secondary structural elements of PscD-SD are mapped onto the alignment with alpha-helices (labelled α₁-α₄) indicated by red coils and beta-strands (labelled β₁-β₄) indicated by blue arrows. Red boxes indicate amino acids that form polar contacts with the ligands and black boxes indicate other amino acids in the binding-site.