Results 101 to 110 of about 7,436 (214)

Cell-free system for assembly of transcriptionally repressed chromatin from Drosophila Embryos [PDF]

open access: yes, 1992
We descrtbe a cell·free system, derlved (rom preblastoderm DrosophÜIJ embryos. ror tbe efficient assembly of eloned DNA into chromatin. Tbe cbromatin assembly system ulilizes cndogcDous eure histones aod assembly racton aod yields loog arrays of ...
Earl Wu   +3 more
core  

Specific binding of chartreusin, an antitumor antibiotic, to DNA [PDF]

open access: yes, 1983
Chartreusin, an antitumor and antibacterial antibiotic, was found to inhibit negatively superhelical DNA-relaxation catalyzed by prokaryotic topoisomerase I and conversion of the superhelical DNA into unit length linear form catalyzed by single-strand ...
Isono, Kiyoshi   +11 more
core   +1 more source

DNA Topoisomerases maintain promoters in a state competent for transcriptional activation in Saccharomyces cerevisiae.

open access: yesPLoS Genetics, 2012
To investigate the role of DNA topoisomerases in transcription, we have studied global gene expression in Saccharomyces cerevisiae cells deficient for topoisomerases I and II and performed single-gene analyses to support our findings.
Jakob Madsen Pedersen   +9 more
doaj   +1 more source

Characterization of purified DNA-relaxing enzyme from human tissue culture cells [PDF]

open access: yes, 1975
Superhelical simian virus 40 DNA migrates more rapidly during electrophoresis in agarose gels than covalently closed DNA free of superhelical turns (relaxed DNA). The difference in electrophoretic mobility between superhelical and relaxed DNA was used to
Keller, W., Keller, W.
core  

Elucidating the DNA–Histone Interaction in Nucleosome from the DNA–Dendrimer Complex [PDF]

open access: yes, 2016
The electrostatic complex of DNA with poly­(amidoamine) G6 dendrimer (called “dendriplex”) is used as a model system to resolve if pure electrostatic interaction can lead to the key structural features of nucleosome.
Nikolay V. Berezhnoy (2014942)   +23 more
core   +1 more source

The DNA Binding Protein Lsr2 from Mycobacterium tuberculosis [PDF]

open access: yes, 2012
Lsr2 is a small, basic DNA binding protein that is highly conserved in mycobacteria and related actinomycetes. Lsr2 is essential for growth in Mycobacterium tuberculosis and previous studies have shown that Lsr2 is involved in down-regulating a wide ...
Summers, Emma Louise
core  

8oxoG:A Is Structurally Accommodated in the Nucleosome Core Particle, Yet Inaccessible to MUTYH-Initiated DNA Repair

open access: yesBiomolecules
Eukaryotic genomic DNA is packaged into chromatin as nucleosomes, where it remains susceptible to reactive oxygen species (ROS) that generate the mutagenic lesion 8-oxo-7,8-dihydroguanine (8oxoG).
Abigayle F. Vito   +12 more
doaj   +1 more source

Dye titrations of covalently closed supercoiled DNA analyzed by agarose gel electrophoresis [PDF]

open access: yes, 1976
We have developed a rapid electrophoretic technique for performing ethidium bromide dye titrations in cylindrical 0.7% agarose gels. The technique was used to analyze the extent of supercoiling in circular covalently closed SV40, Co1E1, and pSC101 DNA ...
DeLeys, Robert J., Jackson, David A.
core   +1 more source

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