%0 Journal Article %A Woolcock, P. R. %A Czekalowski, J. W. %A Hall, D. A. %T Studies on Proteolytic Activity of Mycoplasmas: the Preparation and Properties of Gelatinolytic Enzymes from Strains of Mycoplasma arthritidis† %D 1973 %J Microbiology, %V 78 %N 1 %P 23-32 %@ 1465-2080 %R https://doi.org/10.1099/00221287-78-1-23 %I Microbiology Society, %X Summary: Gelatinolytic enzymes secreted by two strains of Mycoplasma arthritidis were partly purified by ammonium sulphate and acetone precipitation and separated by chromatography on G-200 Sephadex. Both were of relatively high molecular weight, were active over a broad pH range and displayed substrate specificity. Both released amino groups from gelatin; one released hydroxyproline too. They may represent a new group of proteolytic enzymes since: (1) though specific for collagenous proteins they attacked only denatured, not native collagen; ana (ii) unlike other recognized proteolytic enzymes they did not attack α-casem. %U https://www.microbiologyresearch.org/content/journal/micro/10.1099/00221287-78-1-23