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Figure 2.
FIG. 2. A, ribbon diagram of a PriB dimer compared with
those of EcoSSB and HsmtSSB tetramers. The monomers are colored
differently. Side chains of Val-6 in the PriB dimer, Ile-9 in
the EcoSSB tetramer, and His-18 in the HsmtSSB tetramer are
shown as stick models. B, electrostatic potential comparison of
the dimer-dimer interfaces of EcoSSB and HsmtSSB, as well as the
putative region of the PriB dimer. For simplicity, the L[23] of
each dimer is omitted in this diagram. Positive and negative
potentials are shown in blue and red, respectively, whereas
charge residues of one monomer are labeled in yellow. The black
dotted line indicates the monomer-monomer interface of each
dimer. Single letter amino acid abbreviations are used with
position numbers. MSMS (58) was used to calculate the molecular
surface contours, and the surface electrostatic potential was
calculated using MEAD (59).
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