Figure 6

High-resolution TEM (HRTEM) and selected-area electron diffraction (SAED) characterization of uranium-loaded periplasm of the DL1 and DL1-MacA strains. A. representative SAED pattern from the cell wall displaying diffuse diffraction rings. Average scattering distance measured from the first diffraction ring is 2.2 Å; B and C – High magnification bright-field (BF) and dark-field (DF) TEM images of the cell wall of the strain DL1-MacA; D and E – BF and DF TEM images of the cell wall of the strain DL1; F and G – High-resolution TEM image of the cell wall of the strains DL1-Mac-1(F) and DL1 (G), showing amorphous features of the U-bearing cell wall layers. OM– outer membrane, P– periplasm, IM– inner membrane.