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J Bacteriol. 1962 September; 84(3): 520-525
Copyright © 1962, The Williams & Wilkins Company. All Rights Reserved.

OCCURRENCE OF CATALASE IN PLEUROPNEUMONIA-LIKE ORGANISMS AND BACTERIAL L FORMS

^a Central Bacteriological Laboratory of Stockholm City, Stockholm, Sweden

ABSTRACT

WEIBULL, C. (Central Bacteriological Laboratory of Stockholm City, Stockholm, Sweden) AND KERSTIN HAMMARBERG. Occurrence of catalase in pleuropneumonia-like organisms and bacterial L forms. J. Bacteriol. 84:520–525. 1962.—The catalase activity of six pleuropneumonia-like organisms (PPLO), four stable Proteus L forms, and four normal strains of Proteus mirabilis was determined quantitatively. The PPLO (strains of the species Mycoplasma agalactiae, hominis, laidlawii, mycoides, and strains isolated from tissue cultures) exhibited no measurable catalase activity. The L forms decomposed H₂O₂ approximately ten times as rapidly as the normal bacteria from which they were derived.

¹ Present address: Department of Bacteriology, Medical School, University of Umeå, Umeå, Sweden.