title: Cloning, characterization, and DNA base sequence of the high-level streptomycin resistance gene strA1 of Haemophilus influenzae Rd.
abstract: The high-level streptomycin resistance strA1 gene of Haemophilus influenzae Rd was cloned in plasmid pAT4 as a 2.1-kbp EcoRI insert. It was later replaced in pAT4 by the wild-type strA+ gene. Plasmid pAT4 carrying the strA+ gene is highly unstable and renders chromosomally resistant recipients sensitive to streptomycin. The strA+ gene and the instability factor both reside on a 500-base HindIII-EcoRI subfragment. The two biological activities are also expressed in Escherichia coli. Both wild-type (strA+) and mutant (strA1) genes were sequenced. They show considerable nucleotide homology with the E. coli strA+ gene and its product.
authors.affiliation: Department of Biological Science, Florida State University, Tallahassee 32306.
authors.forename: J H
authors.initials: JH
authors.lastname: Stuy
authors.forename: R B
authors.initials: RB
authors.lastname: Walter
mesh_terms: D000595:Amino Acid Sequence; D001483:Base Sequence; D003001:Cloning, Molecular; D004269:DNA, Bacterial / Q000235:genetics; D004352:Drug Resistance, Microbial; D004926:Escherichia coli / Q000235:genetics; D005798:Genes, Bacterial; D006193:Haemophilus influenzae / Q000235:genetics*; D008969:Molecular Sequence Data; D009838:Oligodeoxyribonucleotides / Q000737:chemistry; D016415:Sequence Alignment; D013307:Streptomycin
chemical_list: D004269:DNA, Bacterial; D009838:Oligodeoxyribonucleotides; D013307:Streptomycin