Studies on the antigenic structure of Listeria monocytogenes. I. The chemical structure of protein substances isolated from eight strains of Listeria monocytogenes
Bull Acad Polonaise Sci Ser Sci Biol 8(2): 57-60
The 8 strains are: I, II, III, IVa, IVb, 7/53, 1/44, and 2/44. The proportion of proteins per unit of dry weight varied from 21.8-53.5%, lowest being 1/44 and 2/44 and highest I. Protein fractions have between 6.6% and 98% of protein.the first 2 fractions showing consistently higher values in all strains. Deoxyribonucleic acid fell consistently and in the same way in the successive fractions of all strains; all strains and fractions were alike in amino acid composition, as shown by paper chromatography. Thirteen of these are listed as present. In contrast to Corynebacterium diphtheriae, which belongs to the same family, protein content is lower, while DNA content is considerably higher.