title: [An analysis of the secondary structure of spider spidroins I and II belonging to different species].
abstract: We have analyzed the secondary structure of spidroin proteins of I and II types, related to spiders of different species. We used standard methods of secondary structure prediction NNPREDICT and JPRED and also analyzed the occurrences of oligopeptides with a preferred secondary structure with the help of the OLIGON program. We have demonstrated that local segments of the polypeptide chain can adopt alpha- and beta-conformations as well as the left-handed helix of polyproline II type. Periodical patterns found in the amino acid distribution indicate that there is a possibility of development of a macroscopic order accompanied by local conformational transitions.
authors.forename: L E
authors.initials: LE
authors.lastname: Ragulina
authors.forename: V Iu
authors.initials: VIu
authors.lastname: Makeev
authors.forename: N G
authors.initials: NG
authors.lastname: Esipova
authors.forename: V G
authors.initials: VG
authors.lastname: Tumanian
authors.forename: P K
authors.initials: PK
authors.lastname: Vlasov
authors.forename: V G
authors.initials: VG
authors.lastname: Bogush
authors.forename: V G
authors.initials: VG
authors.lastname: Debabov
mesh_terms: D000595:Amino Acid Sequence; D000818:Animals; D005349:Fibroins / Q000737:chemistry*; D019476:Insect Proteins / Q000737:chemistry*; D008958:Models, Molecular; D008969:Molecular Sequence Data; D017433:Protein Structure, Secondary; D047011:Silk / Q000737:chemistry*; D013045:Species Specificity; D013112:Spiders / Q000737:chemistry
chemical_list: D019476:Insect Proteins; D047011:Silk; C086087:spidroin 1; C076815:spidroin 2; D005349:Fibroins