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. Author manuscript; available in PMC: 2011 Mar 1.
Published in final edited form as: Curr Bioinform. 2010 Mar 1;5(1):68–80. doi: 10.2174/157489310790596358

Fig. 1.

Fig. 1

(a) Canonical EF-Loop binding site. (b) Illustration of key EF-Hand structural characteristics. The physical relationships between the Ca2+ ion (Ca), the ligand oxygen (O), and the ligand oxygen atoms covalently-bound carbon (C) are defined by the angle Ca-O-C and distances dist(Ca,C) and dist(Ca,O). (c) Dihedral angle of bidentate ligands between two planes formed by O-Ca-O and O-C-O.