 | Acta Crystallographica Section D Acta Crystallographica Section D BIOLOGICAL CRYSTALLOGRAPHY |
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![[Figure 1]](gx5084fig1mag.jpg)
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Figure 1
Analysis by MS of a nitrogen regulatory protein from N. meningitides before and after crystallization. (a) Mass spectrum of the purified protein prior to crystallization. The preparation contained both the phosphorylated and the non-phosphorylated protein form. (b) Image of the crystal taken for MS analysis. The protein was crystallized in 100 mM citrate pH 5 and 3.2 M ammonium sulfate. (c) Mass spectrum of the crystallized protein sample prepared using the protocol described in Nettleship et al. (2005  ). The crystal only contained the non-phosphorylated protein form. |
![[Figure 1]](gx5084fig1.jpg)
| BIOLOGICAL CRYSTALLOGRAPHY |
ISSN: 1399-0047
