title: trans-Acting virulence functions of the octopine Ti plasmid from Agrobacterium tumefaciens.
abstract: All Ti plasmid-encoded virulence functions that were studied act in trans. An octopine Ti plasmid-specific vir operon, called vir-O, located on an EcoRI restriction fragment has been characterized. Sequences with promoter activity in Escherichia coli were identified for a second vir operon, called vir-C, which was located close to the position of vir-O.
mesh_terms: D001120:Arginine / Q000031:analogs & derivatives* / Q000378:metabolism; D003001:Cloning, Molecular; D004926:Escherichia coli / Q000235:genetics; D009154:Mutation; D009876:Operon; D010941:Plant Tumors; D010957:Plasmids; D012231:Rhizobium / Q000235:genetics* / Q000378:metabolism
chemical_list: C005394:octopine; D001120:Arginine