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Regulation of a restriction and modification system via DNA inversion in Mycoplasma pulmonis
Author(s) -
Dybvig Kevin,
Yu Hullan
Publication year - 1994
Publication title -
molecular microbiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.857
H-Index - 247
eISSN - 1365-2958
pISSN - 0950-382X
DOI - 10.1111/j.1365-2958.1994.tb01041.x
Subject(s) - biology , genetics , restriction enzyme , dna , mycoplasma , locus (genetics) , gene , mollicutes , microbiology and biotechnology
Summary An invertible DNA element of 6.8 kb, designated the hsd1 locus, was identified in the chromosome of Mycoplasma pulmonis. Infection of host cells with mycoplasma virus P1 revealed that the organism's restriction and modification (R‐M) properties are controlled by inversion of hsd1. The nucleotide sequence of hsd1 revealed several genes, the predicted amino acids of which bear striking similarity to the subunits of the type I R‐M enzymes previously found only in enteric bacteria.