DNA-segment-capture model for loop extrusion by structural maintenance of chromosome (SMC) protein complexes
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The discrete regulation of supercoiling, catenation and knotting by DNA topoisomerases is well documented both in vivo and in vitro, but the interplay between them is still poorly understood. Here we studied DNA catenanes of bacterial plasmids arising as a ...
We studied the structure of viral nucleoprotein complexes extracted from the nuclei of mouse cells infected with the immunosuppressive strain of the minute virus of mice (MVMi). Two types of complex were detected, with sedimentation coefficients of about 1 ...
Adeno-associated virus type 2 (AAV2) infection incites cells to arrest with 4N DNA content or die if the p53 pathway is defective. This arrest depends on AAV2 DNA, which is single stranded with inverted terminal repeats that serve as primers during viral D ...
Electrophorescing blopolymers across nanopores modulates the ionic current through the pore, revealing the polymer's diameter, length, and conformation. The rapidity of polymer translocation (similar to 30 000 bp/ms) in this geometry greatly limits the inf ...
The 5'-terminal sequence in the DNA of the parvovirus minute virus of mice (MVM) is a palindrome. It can form a hairpin, the stem of which is entirely base-paired except for three consecutive unpaired nucleotides which form a bubble. Since this structure i ...
Computer analysis of a conserved domain, BRCT, first described at the carboxyl terminus of the breast cancer protein BRCA1, a p53 binding protein (53BP1), and the yeast cell cycle checkpoint protein RAD9 revealed a large superfamily of domains that occur p ...
Recently, a new method for the specific covalent labeling of fusion proteins in vitro and in living cells has been developed. This method is based on the unusual mechanism of a DNA repair protein: the O6-alkylguanine DNA alkyltransferase (AGT). In addition ...
Organoruthenium compds. have emerged as promising novel anticancer agents but very little is known about their mol. mechanism of action. Here, we present classical and mixed QM/MM first-principles MD simulations of two ruthenium(II) compds. and their bindi ...
Lon (or La) is a soluble, homooligomeric ATP-dependent protease. Mass determination and cryoelectron microscopy of pure mitochondrial Lon from Saccharomyces cerevisiae identify Lon as a flexible ring-shaped heptamer. In the presence of ATP or 5'-adenylylim ...
Proceedings of the National Academy of Sciences1999
A powerful chemical modification procedure has been developed to define determinants of DNA recognition by the p50 subunit of NF-kappa B. Differential labelling with [14C] iodoacetate has identified a conserved cysteine residue, Cys62, that was protected f ...