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. Author manuscript; available in PMC: 2009 Feb 5.
Published in final edited form as: J Mol Biol. 2008 Jun 24;382(1):56–73. doi: 10.1016/j.jmb.2008.06.047

Table 5.

EF-hand angles determined using the vector geometry mapping (VGM) method

N-terminal
coordinate of
second helix
Θ (°) Φ (°) Ω (°)
Pseudo-EF hand
Ca2+-S100Ba,b 8.2 −0.2 −6.8 50 87 109
Zn2+,Ca2+-S100Ba 8.2 0.0 −6.4 50 87 108
Pnt-Ca2+-S100Ba 8.3 −0.1 −6.5 51 91 107
Pnt-Zn2+,Ca2+-S100Ba 8.2 0.0 −6.7 51 90 105
Typical EF hand
Ca2+-S100Ba,b 8.9 0.3 −6.6 74 102 75
Zn2+,Ca2+-S100Ba 8.8 −0.2 −6.8 76 104 75
Pnt-Ca2+-S100Ba 8.8 0.4 −6.5 74 104 69
Pnt-Zn2+,Ca2+-S100Ba 8.8 0.3 −6.5 75 105 70

VGM angles were calculated by way of VGM software (K. Yap, University of Toronto) using the helices and structures indicated.

a

The residues used for the VGM calculations were as follows: helix I, residues 10–17; helix II, residues 29–39; helix III, residues 53–60; and helix IV, residues 70–80.

b

Calculated using PDB entry 1MHO.

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