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. 1971 Jul;107(1):320-4.
doi: 10.1128/jb.107.1.320-324.1971.

Paracrystalline sheets reaggregated from solubilized exosporium of Bacillus cereus

T C Beaman, H S Pankratz, P Gerhardt

Paracrystalline sheets reaggregated from solubilized exosporium of Bacillus cereus

T C Beaman et al. J Bacteriol. 1971 Jul.

Abstract

Fragments of exosporium, isolated from dormant spores of Bacillus cereus, were disintegrated by treatment with sodium dodecyl sulfate (SDS) or with phenol and acetic acid. After centrifugation of each preparation, proteins in the supernatant fractions were resolved by disc gel electrophoresis into either two or eight bands, respectively. The SDS-solubilized fraction contained spheroidal particles 11 to 44 nm in diameter. When centrifuged until clear, this fraction after dialysis still gave rise to crystal-like sheets which had the same lattice symmetry and major chemical components (protein, lipid, and carbohydrate) as fragments of the native exosporium.

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