Skip to main navigation Skip to search Skip to main content

Kristallicheskaia i molekuliarnaia struktura K+-kompleksa mezo-valinomitisna, cyclo(-(D-Val-L-Hyi-L-D-Hyi)3-).KAuCl4.

Translated title of the contribution: Crystalline and molecular structure of the K+-complex of meso-valinomycin, cyclo(-(D-Val-L-Hyi-L-Val-D-Hyi)3-).KAuCl4
  • V. Z. Pletnev
  • , I. N. Tsygannik
  • , I. D. Fonarev
  • , I. I. Mikhailova
  • , I. V. Kulikov
  • , V. T. Ivanov
  • , D. A. Langs
  • , W. L. Duax

Research output: Contribution to journalArticlepeer-review

7 Scopus citations

Abstract

Crystal structure of the complex of meso-valinomycin with KAuCl4 (C60H102N6O18KAuCl4) was determined using direct X-ray diffraction analysis. The conformational state of the complex is similar to that determined earlier for free meso-valinomycin. Characteristic of it is the centrosymmetric bracelet shape stabilized by six intramolecular NH...OC hydrogen bonds of 4 --> 1 type. The K+ ion is located in an inner negatively charged octahedral cavity formed by six carbonyl oxygen atoms of ester groups. The observed differences in conformational angles of the complex and free are caused by readjustment of the geometry of the ion-binding cavity to the size of the ion bound during complexation.

Translated title of the contributionCrystalline and molecular structure of the K+-complex of meso-valinomycin, cyclo(-(D-Val-L-Hyi-L-Val-D-Hyi)3-).KAuCl4
Original languageRussian
Pages (from-to)828-833
Number of pages6
JournalBioorganicheskaya Khimiya
Volume21
Issue number11
StatePublished - Nov 1995

Fingerprint

Dive into the research topics of 'Crystalline and molecular structure of the K+-complex of meso-valinomycin, cyclo(-(D-Val-L-Hyi-L-Val-D-Hyi)3-).KAuCl4'. Together they form a unique fingerprint.

Cite this