Figure 1.

Comparison of recalculated structure of AsiA dimer to the structure of Urbauer et al (PDB accession code 1JR5). On the left is the recalculated structure family with a ribbon representation of the monomer shown at the bottom. On the right is the C_α trace of one model from 1JR5 and a ribbon representation at the bottom. The two structures are very similar to one another, with the exception of the position of helix A6. In 1JR5, the C-terminus is tucked against the back face of helices A1 and A4, while in our revised structures these restraints are not observed. Helix A6 in 1JR5 is also one turn shorter than that observed by us. Despite these differences, the two structures are in overall agreement.