title: A new site-specific endonuclease showing phenotypical crypticity in a tumorigenic strain of Agrobacterium tumefaciens.
abstract: AtuBVI, an endonuclease showing new site-specificity, has been isolated from the tumorigenic strain IIBV7 of Agrobacterium tumefaciens, and is undetectable in the non-tumorigenic sister strain IIBNV6. AtuBVI degrades IIBV7 DNA in vitro and should, therefore, be regarded as being phenotypically cryptic in the bacterial cell; it also shows anomalous behavior under cerain incubation conditions. These properties point to a possible role for this enzyme in the insertion of exogenous Ti-plasmid DNA into plant tissues during tumorigenesis.
mesh_terms: D003090:Coliphages / Q000235:genetics; D004262:DNA Restriction Enzymes / Q000302:isolation & purification*; D004269:DNA, Bacterial / Q000378:metabolism*; D004279:DNA, Viral / Q000378:metabolism; D012231:Rhizobium / Q000201:enzymology*; D013379:Substrate Specificity
chemical_list: D004269:DNA, Bacterial; D004279:DNA, Viral; D004262:DNA Restriction Enzymes