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  • Title: Molecular analysis of tlrB, an antibiotic-resistance gene from tylosin-producing Streptomyces fradiae, and discovery of a novel resistance mechanism.
    Author: Wilson VT, Cundliffe E.
    Journal: J Antibiot (Tokyo); 1999 Mar; 52(3):288-96. PubMed ID: 10348045.
    Abstract:
    The tlrB gene, which confers inducible resistance to a range of macrolide antibiotics including biosynthetic precursors of tylosin, was isolated and sequenced. In the genome of Streptomyces fradiae, it lies between pbp, which encodes a putative penicillin-binding protein, and tylN, encoding a glycosyltransferase involved in tylosin biosynthesis. The TlrB protein was produced in E. coli as a fusion to MalE. The fusion protein, but not MalE alone, inactivates macrolides in the presence of S-adenosyl-methionine (SAM) but the modified product(s) has not been characterised.
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