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A new crystalline form, thin laminar microcrystals of 70 S ribosomes from Thermus thermophilus, have been obtained. Negatively stained ordered sheets derived from these crystals were studied by electron microscopy with subsequent computer image processing. The sheets have two-dimensional unit cell parameters a = b = 480 Å, γ = 90 o and a resolution limit of about 30 Å. The microcrystals are...
Prolonged incubation of membrane fragments containing homogeneous (Na + + K + )-ATPase with Mg 2+ , K + and VO 3- at 4 o C resulted in formation of two-dimensional crystals of this enzyme with unit cell parameters: a = 66 Å, b = 118 Å, γ = 108 o . The crystals correspond to the two-sided plane group p21. By combining tilted electron...
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