Protein Structure from Scientific Research

Difference potential maps of (+)-limaspermidine based on the final models with hydrogen atoms removed. Yellow isosurfaces correspond to the 3 [V ( r )] level, orange isosurfaces to the 5 [V ( r )] level. The maps are superimposed with structure models with expected locations of hydrogen sites indicated by pale-pink lines from the respectively bonded C or O atom. Anisotropic displacement ellipsoids shown at the 50% probability level.

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