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The Crystal Structure of a K + Complex of Valinomycin

1975; Wiley; Volume: 58; Issue: 2 Linguagem: Inglês

10.1002/hlca.19750580212

1522-2675

Katarina Neupert‐Laves, Max Dobler,

Antimicrobial Peptides and Activities

Abstract A KI 3 /KI 5 complex of the cyclododecadepsipeptide antibiotic valinomycin crystallizes in the space group C222 1 , a = 13.34, b = 24.65, c = 46.96 Å. The crystal structure investigation shows that K + is coordinated octahedrally by six carbonyl oxygen atoms. The macrocyclic ring skeleton adopts non‐crystallographic S 6 symmetry. Six hydrogen bonds involving amide nitrogen atoms and carbonyl oxygen atoms form a belt around the molecule.