title: Isolation and characterization of outermost layer deficient mutant spores of Bacillus megaterium.
abstract: Outermost layer deficient mutant spores of Bacillus megaterium ATCC 12872 were isolated by Urografin density gradient centrifugation after mutagenesis with ethyl methanesulfonate. Although the composition of the cortex peptidoglycan was the same as that of the parent spores, three major proteins (48, 36, and 22 K daltons) were missing, suggesting that these proteins are components of the outermost layer. All mutant spores were also found to have very hydrophobic surface by 'salt aggregation test,' which would facilitate selection of such mutants.
authors.affiliation: Department of Environmental Chemistry and Microbiology, Faculty of Pharmaceutical Sciences, Osaka University.
authors.forename: Y
authors.initials: Y
authors.lastname: Takubo
authors.forename: M
authors.initials: M
authors.lastname: Atarashi
authors.forename: T
authors.initials: T
authors.lastname: Nishihara
authors.forename: M
authors.initials: M
authors.lastname: Kondo
mesh_terms: D001410:Bacillus megaterium / Q000235:genetics* / Q000302:isolation & purification / Q000648:ultrastructure; D001426:Bacterial Proteins / Q000235:genetics / Q000302:isolation & purification; D002462:Cell Membrane / Q000032:analysis; D002499:Centrifugation, Density Gradient; D008854:Microscopy, Electron; D009113:Muramidase / Q000494:pharmacology; D009154:Mutation; D013171:Spores, Bacterial / Q000235:genetics / Q000302:isolation & purification / Q000648:ultrastructure
chemical_list: D001426:Bacterial Proteins; D009113:Muramidase