Conformational Features of the Dippu-AST 8 Neuropeptide from the Cockroach Diploptera punctata

Spatial structure and conformational properties of the Dippu-AST 8 (allatostatin III) neuropeptide have been investigated by the molecular mechanics method. The conformational energy and geometrical parameters corresponding to the low-energy states of the molecule are obtained. A single backbone conformation with a very restricted set of Ser 3, Phe 4 and Leu 9 amino acids positions is observed for Dippu-AST 8 neuropeptide.