Structure of the outer mitochondrial membrane: analysis of X-ray diffraction from the plant membrane.
X-ray diffraction from centrifugally oriented specimens of plant outer mitochondrial membranes suggests that these membrane contain prominent in-plane subunits. The short lamellar repeat which these specimens display (as low as 5.1 nm) points to a predominantly internal localization of the protein components of these membranes. The simplest model for the putative in-plane subunit consistent with autocorrelation analysis of the normal-indicence diffraction data consists of two concentric rings of electron density with diameters of (approx.) 2 and 4 nm. These rings could represent the planar projections of concentric cylindrical shells, aligned normal to the membrane surface.
D007425:Intracellular Membranes / Q000648:ultrastructure*; D008433:Mathematics; D008928:Mitochondria / Q000648:ultrastructure*; D010944:Plants; D014961:X-Ray Diffraction