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Subinhibitory concentrations of bacitracin, vancomycin and other inhibitors of cell wall synthesis reversed to varying extents the intrinsic resistance of Mycobacterium tuberculosis to clarithromycin. Ethambutol reversed clarithromycin resistance in all of the M. tuberculosis strains studied regardless of their susceptibility to this drug.
Twenty analogues of the anti-HIV-1 integrase (IN) inhibitors dicaffeoylquinic acids (DCQAs) were prepared. Their IC(50) values for 3'-end processing and strand transfer against recombinant HIV-1IN were determined in vitro, and their cell toxicities and EC(50) against HIV-1 were measured in cells (ex vivo). Acetylated or benzylated and/or with… (More)
BACKGROUND DNA structure checkpoints are conserved eukaryotic signal transduction pathways that help preserve genomic integrity. Upon detecting checkpoint signals such as stalled replication forks or double-stranded DNA breaks, these pathways coordinate appropriate stress responses. Members of the PI-3 kinase related kinase (PIKK) family are essential… (More)
A protein without natural binding functions was engineered to bind HIV-1 integrase. Phage display selections applied a library of variants based on the C-terminal domain of the eye lens protein human γS-crystallin. Multiple loop regions were altered to encode libraries with ≈3.6 × 10(11) different variants. A crystallin variant, termed integrase binding… (More)