Cyclolinopeptide B methanol trisolvate
نویسندگان
چکیده
The title compound, C(56)H(83)N(9)O(9)S·3CH(3)OH, is a methanol tris-olvate of the cyclo-linopeptide cyclo(Met(1)-Leu(2)-Ile(3)-Pro(4)-Pro(5)-Phe(6)-Phe(7)-Val(8)-Ile(9)) (henceforth referred to as CLP-B), which was isolated from flaxseed oil. All the amino acid residues are in an l-configuration based on the CORN rule. The cyclic nona-peptide exhibits eight trans peptide bonds and one cis peptide bond observed between the two proline residues. The conformation is stabilized by an α-turn and two consecutive β-turns each containing a N-H⋯O hydrogen bond between the carbonyl group O atom of the first residue and the amide group H atom of the fourth (α-turn) or the third residue (β-turns), repectively. In the crystal, the components of the structure are linked by N-H⋯O and O-H⋯O hydrogen bonds into chains parallel to the a axis.
منابع مشابه
Cyclolinopeptide A methanol solvate
Crystals of the title compound, C(57)H(85)N(9)O(9)·CH(4)O, the methanol solvate of a nine peptide polypeptide, cyclo-(Pro-Pro-Phe-Phe-Leu-Ile-Ile-Leu-Val), were obtained after separation of the cyclic peptide from flax oil. The cyclo-linopeptide A (CLP-A) mol-ecules are linked in chains along the a axis by N-H⋯O hydrogen bonds. Each methanol O atom is hydrogen bonded to one O atom and two N-H g...
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