title: X-ray diffraction studies on selected bacterial cell walls.
abstract: The cell walls of selected bacteria were studied by X-ray diffraction analysis to determine and characterize crystalline components. The walls were isolated by mechanical disruption and purified by enzymatic and washing procedures. The X-ray diffraction lines which appeared from the gram-positive cell walls were shown to be due to the constituent "mucopeptide" fraction. No diffraction lines could be obtained from the gram-negative bacterium studied. The results show that crystallinity is associated with mucopeptide.
mesh_terms: D001409:Bacillus cereus / Q000032:analysis*; D001412:Bacillus subtilis / Q000032:analysis*; D002473:Cell Wall / Q000032:analysis*; D002854:Chromatography, Paper; D003013:Clostridium / Q000032:analysis*; D005417:Flavobacterium / Q000032:analysis*; D009088:Mucoproteins / Q000032:analysis; D013053:Spectrophotometry; D014961:X-Ray Diffraction
chemical_list: D009088:Mucoproteins