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Figure 1.
Figure 1. (a) Sequence alignment of XC1739 with E. coli. MarR.
The secondary structure elements were illustrated as green tubes
for  -helices
and red arrows for  -strands;
the wing region was drawn as gray lines. Numbering starts
according to the XC1739 primary sequence. Residues that are
identical between the two sequences are colored in red, highly
conserved in blue. Residues that are conserved and important in
stabilizing dimerization domains are marked with a  plus
 sign,
while those important in forming hydrophobic core for each
individual DNA-binding domain are denoted with an asterisk
sign.
(b) Ribbon representation of the XC1739 structural dimer. The
secondary structures are colored coded from N-terminal to
C-terminal in blue and green, and green and red, respectively,
for each momoner. The electron density of the wing region is
invisible and was marked as gray dots. (c) Stereodiagram of the
electrostatic surface map of the XC1739 dimer. Positive charged
residues are coded in blue and negative residues in red. (d)
Superimposition diagram of the XC1739 dimer (colored in blue)
with the liganded E. coli MarR dimer (colored in red). The
diagrams are prepared using PdbViewer[18] except panel c, which
is drawn using PyMol (DeLano Scientific LLC).
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