[Aib5,6-D-Ala8]-cyclolinopeptide A, grown from a benzene/acetonitrile mixture

Acta Crystallogr C. 1995 Apr 15;51 ( Pt 4):663-6. doi: 10.1107/s0108270194006864.

Abstract

cyclo-(Prolyl-prolyl-phenylalanyl-phenylalanyl- alpha-aminoisobutyryl-alpha-aminoisobutyryl-isoleucyl-D-alan yl-valyl) ([Aib5,6-D-Ala8]-cyclolinopeptide A), grown from benzene/acetonitrile mixture, crystallizes with one acetonitrile and two water molecules. The molecular structure is almost identical to that obtained from methanol/water. The dimension of the solvent channels found in these structures is reduced in the present one, but the intramolecular hydrogen-bond pattern is preserved. The Pro1-Pro2 peptide unit is cis (omega = 8 degrees); all others are trans.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Acetonitriles*
  • Amino Acid Sequence
  • Benzene*
  • Crystallization
  • Crystallography, X-Ray
  • Models, Molecular
  • Molecular Sequence Data
  • Peptides, Cyclic / chemistry*

Substances

  • Acetonitriles
  • Peptides, Cyclic
  • cyclolinopeptide A
  • Benzene
  • acetonitrile