title: Ultrastructure of native lipoprotein from Escherichia coli envelopes.
abstract: The free form of the major lipoprotein from Escherichia coli cells envelopes has been purified to homogeneity by gentle extraction procedures and conventional chromatographic separations in a non-ionic detergent. The morphology of paracrystals obtained from homogeneous protein was investigated by low-dose electron microscopy. Electron diffraction of the paracrystals was consistent with alpha-helices arranged perpendicularly to the main cross-band with a periodicity of 20 nm.
mesh_terms: D001425:Bacterial Outer Membrane Proteins / Q000302:isolation & purification; D004926:Escherichia coli / Q000648:ultrastructure*; D008074:Lipoproteins / Q000302:isolation & purification; D008854:Microscopy, Electron
chemical_list: D001425:Bacterial Outer Membrane Proteins; D008074:Lipoproteins