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Figure 6.
FIGURE 6. Electrostatic surface representations of the NAP
structures. A, electrostatic surface of the molybdenum funnel
face of the various NAP structures. B, electrostatic surface of
the presumed NapB interaction face of the various NAP
structures. Electrostatic surfaces were calculated in the
program GRASP (28) and displayed in PYMOL (Delano Scientific).
The "surface potentials" of color property scale -10 (red,
negatively charged) to +10 (blue, positively charged).
Coordinates for D. desulfuricans NAP, PDB file 2NAP. Coordinates
for R. sphaeroides NapA, Protein Data Bank (PDB) file 1OGY. The
structures of E. coli, D. desulfuricans, and R. sphaeroides were
aligned using Swisspdbviewer 3.0 ("Magic Fit"). D.d, D.
desulfuricans; E.c, E. coli, R.s, R. sphaeroides.
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