Identification and characterization of IS1296 in Mycoplasma mycoides subsp. mycoides SC and presence in related mycoplasmas

Frey, Joachim; Cheng, X; Kuhnert, Peter; Nicolet, Jacques (1995). Identification and characterization of IS1296 in Mycoplasma mycoides subsp. mycoides SC and presence in related mycoplasmas. Gene, 160(1), pp. 95-100. Elsevier

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IS1296, a new insertion sequence belonging to the IS3 family of insertion elements has been identified in Mycoplasma mycoides subsp. mycoides (Mmm) biotype small colony (SC), the agent of contagious bovine pleuropneumonia (CBPP). IS1296 is 1485-bp long and has 30-bp inverted repeats. It contains two open reading frames, ORFA and ORFB, which show significant similarities to the ORFs which encode the transposase function of IS elements of the IS3 family, in particular IS150 of Escherichia coli. IS1296 is present in 19 copies in Mmm SC-type strain PG1 and in 18 copies in a recently isolated field strain L2. It seems to transpose at low frequency in Mmm SC. IS1296 is also present in 5 copies in Mmm biotype large colony (LC)-type strain Y-goat, and in two copies in Mycoplasma sp. 'bovine group 7' reference strain PG50. It is, however, not present in other species of the 'mycoides cluster' or other closely related Mycoplasma sp. of ruminants.

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