Reference: Hackenjos WA and Schramm HJ (1987) Electron microscopical structure analysis of yeast fatty-acid synthase at low resolution. Biol Chem Hoppe Seyler 368(1):19-36

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Abstract


From an electron microscopical tilt series of the multi-enzyme complex yeast fatty-acid synthase eight three-dimensional molecular structures were obtained by three-dimensional reconstruction of single molecules. The structures confirm present concepts showing a well defined central wall and a sequential arrangement of protein domains in the form of "arches". Additional structural details as ring-shaped parts in the central walls are recognizable. Because of the flattening and the irregular structural deterioration of the single molecules three-dimensional averaging was only partially successful; however, a satisfactory average from five molecules could be obtained. Attempts to find the symmetry of the subunit arrangement by applying correlation methods and by establishing a novel type of correlation analysis ("correlation tables") did not yield a clear proof. However, several strong indications of D3 symmetry were found.

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Journal Article | Research Support, Non-U.S. Gov't
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Hackenjos WA, Schramm HJ
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