The crystal structure of the pseudomonomer of
CI2-Q4i compared with the wild-type CI2 monomer. The structure of
CI2-Q4i is colored purple for the N domain (residues 21 to 57) and pale
green for the C domain (residues 61 to 83). Wild-type CI2 is colored
pink. The rms displacement between all main-chain atoms of the crystal
structures of CI2-Q4i and wild-type CI2, when all common residues are
superimposed, is 0.20 Å (that for all atoms is 0.88 Å). Figs. 2, 3,
and 4 in this work were generated with bobscript (30),
which is an enhanced version of molscript (31), and were
rendered with raster3d (32).