 | Acta Crystallographica Section D Acta Crystallographica Section D BIOLOGICAL CRYSTALLOGRAPHY |
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![[Figure 1]](sx5020fig1mag.jpg)
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Figure 1
The chemical structures of (a) methotrexate (MTX) and (b) 2,4,6-triaminoquinazoline (TAQ). (c) The difference density omit map (light green chicken wire) for TAQ in active site A, calculated with (|Fo − Fc|), αc coefficients and contoured at the 3σ level. Fo represents the observed structure factors, Fc the calculated structure factors and αc the calculated phases. The atoms shown in this image (black represents C-atom positions, blue N atoms) did not contribute to Fc or αc. |
![[Figure 1]](sx5020fig1.jpg)
| BIOLOGICAL CRYSTALLOGRAPHY |
ISSN: 1399-0047
