Nucleotides sequestered at different subsite loci within DNA‐binding pockets of two OB‐fold single‐stranded DNA‐binding proteins are unstacked to different extents
Abstract:The gene 5 protein (g5p) encoded by the Ff strains of Escherichia coli bacteriophages is a dimeric single-stranded DNA-binding protein (SSB) that consists of two identical OB-fold (oligonucleotide/oligosaccharide-binding) motifs. Ultrafast time-resolved fluorescence measurements were carried out to investigate the effect of g5p binding on the conformation of 2-aminopurine (2AP) labels positioned between adenines or cytosines in the 16-nucleotide antiparallel tails of DNA hairpins. The measurements revealed sig… Show more
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