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Figure 2
The simple model compound N-acetyl-L-alanine-methylamide used by Ramachandran and coworkers to explore the conformational space defined by the two torsions φ and ψ. The bond angle defined by the N, Cα and C atoms is named τ.

Journal logoBIOLOGICAL
CRYSTALLOGRAPHY
ISSN: 1399-0047
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