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Figure 2
Binding sites of calcium (a) and sodium (b) ions in EF-EG2 structure. The green and purple contours show the Fo − Fc (7.0σ) map calculated without calcium and sodium ions, respectively. Each binding site is composed of eight and six oxygen atoms chelating to a calcium and sodium ion with distances of 2.3–2.5 and 2.3–2.7 Å (represented by black dashed lines), respectively.

Journal logoJOURNAL OF
SYNCHROTRON
RADIATION
ISSN: 1600-5775
Volume 20| Part 6| October 2013| Pages 884-889
doi:10.1107/S0909049513021110
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