Image:Pi helix neg55 neg70 sideview.png
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current | 15:44, 18 October 2006 | 852×1,193 (221 KB) | WillowW | (Close-up sideview of a "stick" model of a pi helix of poly-alanine using the dihedral angles φ=-55° and ψ=-70° and the Engh&Huber bond geometry. Two hydrogen bonds are highlighted in magenta; the O-H distance is 1.65 Å (165 pm). The PDB file was made) |
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