title: Potential-energy calculations of terminally blocked tetrapeptides from the third loop of short-chain snake venom neurotoxins.
abstract: The conformational space of six tetrapeptides from the beta-bends in the third loop of short-chain snake venom neurotoxins was investigated with the aid of energy calculations. It was shown that these peptides can be divided into two groups: those with a specific preference for an alpha-helix and those that exist as an ensemble of beta-turn conformations.
authors.affiliation: Department of Chemistry, University of Pretoria, South Africa.
authors.forename: H M
authors.initials: HM
authors.lastname: Roos
authors.forename: P H
authors.initials: PH
authors.lastname: van Rooyen
mesh_terms: D000595:Amino Acid Sequence; D000818:Animals; D008969:Molecular Sequence Data; D009498:Neurotoxins / Q000737:chemistry*; D010455:Peptides / Q000737:chemistry; D011487:Protein Conformation; D012910:Snake Venoms / Q000737:chemistry*; D013816:Thermodynamics
chemical_list: D009498:Neurotoxins; D010455:Peptides; D012910:Snake Venoms