 | Acta Crystallographica Section D Acta Crystallographica Section D BIOLOGICAL CRYSTALLOGRAPHY |
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![[Figure 4]](en0068fig4mag.jpg)
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Figure 4
Plot of estimated anomalous signal versus protein sulfur/selenium content. The green and blue dotted lines indicate the sulfur and selenium anomalous scattering signals of S-Met and Se-Met EAS, respectively. The anomalous signal was calculated by 〈Δ ![[F^{\pm}]](teximages/en0068fi5.gif) /FT〉 = (NA/2NT) − (2![[f'']](teximages/en0068fi2.gif) /Zeff), where NA and NT are the number of anomalous scatters and the number of non-H atoms, respectively, is the imaginary component of the anomalous scattering and Zeff is the effective atomic scattering factor (6.7 for proteins). A frequency-weighted average of 7.8 non-H atoms per residue was used in the calculation of NT. |
![[Figure 4]](en0068fig4.jpg)
| BIOLOGICAL CRYSTALLOGRAPHY |
ISSN: 1399-0047
