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The X-ray structure of the monoclinic crystal form of [D-Hyi2, L-Hyi4]meso-valinomycin

✍ Scribed by V. Z. Pletnev; V. T. Ivanov; D. A. Langs; B. M. Burkhart; W. L. Duax

Publisher
Wiley (John Wiley & Sons)
Year
1997
Tongue
English
Weight
139 KB
Volume
42
Category
Article
ISSN
0006-3525

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✦ Synopsis

Both independent molecules in the crystal adopt a similar distorted bracelet structure with a sterically inaccessible, partially formed, ion-binding center that is stabilized by six 4 r 1 type H bonds. The observed conformation accounts for the inability of the molecule to complex ions. Close examination of the three crystallographically independent molecules reveals that differences in the backbone conformation associated with solvent interaction are significantly larger than those associated with hydrophobic van der Waals interactions of crystal packing. α­§ 1997

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The structure of [D-Hyi2, L-Hyi4]meso-va
The structure of [D-Hyi2, L-Hyi4]meso-valinomycin revealed by X-Ray analysis
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## Abstract Direct x‐ray analysis has been used to determine the crystal structure of [D‐Hyi^2^, L‐Hyi^4^]__meso__‐valinomycin {cyclo[‐D‐Val‐D‐Hyi‐L‐Val‐L‐Hyi‐(D‐Val‐L‐Hyi‐L‐Val‐D‐Hyi)~2~‐], C~60~H~102~N~6~O~18~}, which crystallized from acetone with two solvent molecules. The crystals are trigonal

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Crystal and molecular structure of the centrosymmetric meso-valinomycin analogueβ€”cyclo (D-Val-D-Hyi-D-Val-L-Hyi-L-Val-D-Hyi-L-Val-L-Hyi-L-Val-D-Hyi-L-Val-L-Hyi) (C60H102N6O18)
✍ V. Z. Pletnev; Yu. D. Fonarev; I. N. Tsygannik; V. T. Ivanov; S. V. Pletnev; D. πŸ“‚ Article πŸ“… 1995 πŸ› Wiley (John Wiley & Sons) 🌐 English βš– 437 KB πŸ‘ 2 views

Hyi-0-Val-t-Hyi) . 2H20 has been solved by x-ray direct methods. The crystals (grown from a mixture of octane/CH2C12) are an orthorhombic, centrosymmetric space group Pbca, cell parameters a = 11.458( 2), b = 25.613(3), c = 23.691 (3) k, Z = 4; therefore the molecule lies on a center of inversion i

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## Synopsis The crystal structure of the valinomycin analog, cyclo-[(-D-Val-Hyi-Val-D-Hyi-)3-] (rneso-valinomycin, C ~~H I O ~N ~O ~S ) has been determined by direct x-ray diffraction procedures. The crystals are triclinic, space group Pi, number of molecules per unit cell 2 = 1, and cell paramete

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The crystal and molecular structure of the valinomycin analogue, cyclo [(D-Val-L-Lac-L-Ala-D-Hyi) 2 (D-Val-L-Lac-L-Val-D-Hyi)] has been solved by x-ray direct methods using the ''Shake and Bake'' procedure. The crystals, grown from a mixture of octane/CH 2 Cl 2 , belong to space group P2 1 (Z Γ… 4) w