1. Volume 87, Issue 1, Pages 513-520 (July 2004)
A Quantitative XANES Analysis of the Calcium High-Affinity Binding Site of the Purple Membrane 
Francesc Sepulcre, M. Grazia Proietti, Maurizio Benfatto, Stefano Della Longa, Joaquin García, Esteve Padrós 
Biophysical Journal 
Volume 87, Issue 1, Pages (July 2004)
DOI: /biophysj
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2. Figure 1
Calcium K-edge absorption spectra of well-washed PM. (Inset) X-ray absorption signal before background subtraction.
Biophysical Journal  , DOI: ( /biophysj )
Copyright © 2004 The Biophysical Society Terms and Conditions

3. Figure 2
Theory-versus-experiment best-fit results for Ca2+-BR complex starting from cluster S6 (A), and for Ca2+ in water starting from cluster S8r (B). All the Ca-O distances are considered as independent parameters.
Biophysical Journal  , DOI: ( /biophysj )
Copyright © 2004 The Biophysical Society Terms and Conditions

4. Figure 3
Theory-versus-experiment best-fit results for Ca2+-BR complex starting from cluster S6 (A) and for Ca2+ in water starting from cluster S8r (B). All the Ca-O distances are correlated.
Biophysical Journal  , DOI: ( /biophysj )
Copyright © 2004 The Biophysical Society Terms and Conditions

5. Figure 4
Ca2+ clusters corresponding to the best-fit results shown in Fig. 2 A (A) and Fig. 2 B (B).
Biophysical Journal  , DOI: ( /biophysj )
Copyright © 2004 The Biophysical Society Terms and Conditions

6. Figure 5
Theory-versus-experiment best-fit results for Ca2+-BR complex starting from Asp-85-Asp-212-3H2O cluster.
Biophysical Journal  , DOI: ( /biophysj )
Copyright © 2004 The Biophysical Society Terms and Conditions

7. Figure 6
Ca2+ coordination in the vicinity of the Schiff base, corresponding to the best-fit for the Ca2+-BR complex, starting from the putative cluster described in the reference by Pardo et al. (1998).
Biophysical Journal  , DOI: ( /biophysj )
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