Search Results - "Neuman, Keir C"
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propagating ATPase gradient drives transport of surface-confined cellular cargo
Published in Proceedings of the National Academy of Sciences - PNAS (01-04-2014)“…The faithful segregation of duplicated genetic material into daughter cells is critical to all organisms. In many bacteria, the segregation of chromosomes…”
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2
Membrane-bound MinDE complex acts as a toggle switch that drives Min oscillation coupled to cytoplasmic depletion of MinD
Published in Proceedings of the National Academy of Sciences - PNAS (15-03-2016)“…The Escherichia coli Min system self-organizes into a cell-pole to cell-pole oscillator on the membrane to prevent divisions at the cell poles. Reconstituting…”
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3
Single-Molecule Tracking of Collagenase on Native Type I Collagen Fibrils Reveals Degradation Mechanism
Published in Current biology (19-06-2012)“…Collagen, the most abundant human protein, is the principal component of the extracellular matrix and plays important roles in maintaining tissue and organ…”
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4
Structural and biochemical basis for DNA and RNA catalysis by human Topoisomerase 3β
Published in Nature communications (09-08-2022)“…In metazoans, topoisomerase 3β (TOP3B) regulates R-loop dynamics and mRNA translation, which are critical for genome stability, neurodevelopment and normal…”
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5
Direct observation of topoisomerase IA gate dynamics
Published in Nature structural & molecular biology (01-12-2018)“…Type IA topoisomerases cleave single-stranded DNA and relieve negative supercoils in discrete steps corresponding to the passage of the intact DNA strand…”
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6
Brownian Ratchet Mechanism for Faithful Segregation of Low-Copy-Number Plasmids
Published in Biophysical journal (11-04-2017)“…Bacterial plasmids are extrachromosomal DNA that provides selective advantages for bacterial survival. Plasmid partitioning can be remarkably robust. For…”
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7
Polydopamine Encapsulation of Fluorescent Nanodiamonds for Biomedical Applications
Published in Advanced functional materials (15-08-2018)“…Fluorescent nanodiamonds (FNDs) are promising bioimaging probes compared with other fluorescent nanomaterials such as quantum dots, dye‐doped nanoparticles,…”
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8
UPF1 ATPase autoinhibition and activation modulate RNA binding kinetics and NMD efficiency
Published in Nucleic acids research (22-05-2024)“…The RNA helicase UPF1 interacts with mRNAs, mRNA decay machinery, and the terminating ribosome to promote nonsense-mediated mRNA decay (NMD). Structural and…”
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Basis for the discrimination of supercoil handedness during DNA cleavage by human and bacterial type II topoisomerases
Published in Nucleic acids research (08-05-2023)“…Abstract To perform double-stranded DNA passage, type II topoisomerases generate a covalent enzyme-cleaved DNA complex (i.e. cleavage complex). Although this…”
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10
Silica Encapsulation of Fluorescent Nanodiamonds for Colloidal Stability and Facile Surface Functionalization
Published in Journal of the American Chemical Society (29-05-2013)“…Fluorescent nanodiamonds (FNDs) emit in the near-IR and do not photobleach or photoblink. These properties make FNDs better suited for numerous imaging…”
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11
Activities of gyrase and topoisomerase IV on positively supercoiled DNA
Published in Nucleic acids research (19-09-2017)“…Although bacterial gyrase and topoisomerase IV have critical interactions with positively supercoiled DNA, little is known about the actions of these enzymes…”
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12
Directed and persistent movement arises from mechanochemistry of the ParA/ParB system
Published in Proceedings of the National Academy of Sciences - PNAS (22-12-2015)“…The segregation of DNA before cell division is essential for faithful genetic inheritance. In many bacteria, segregation of low-copy number plasmids involves…”
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13
Surface Modification of Fluorescent Nanodiamonds for Biological Applications
Published in Nanomaterials (Basel, Switzerland) (09-01-2021)“…Fluorescent nanodiamonds (FNDs) are a new class of carbon nanomaterials that offer great promise for biological applications such as cell labeling, imaging,…”
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14
Highly sensitive mapping of in vitro type II topoisomerase DNA cleavage sites with SHAN-seq
Published in Nucleic acids research (09-09-2024)“…Abstract Type II topoisomerases (topos) are a ubiquitous and essential class of enzymes that form transient enzyme-bound double-stranded breaks on DNA called…”
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15
UPF1 mutants with intact ATPase but deficient helicase activities promote efficient nonsense-mediated mRNA decay
Published in Nucleic acids research (11-11-2022)“…The conserved RNA helicase UPF1 coordinates nonsense-mediated mRNA decay (NMD) by engaging with mRNAs, RNA decay machinery and the terminating ribosome. UPF1…”
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16
CTP and parS coordinate ParB partition complex dynamics and ParA-ATPase activation for ParABS-mediated DNA partitioning
Published in eLife (21-07-2021)“…ParABS partition systems, comprising the centromere-like DNA sequence parS , the parS -binding ParB-CTPase, and the nucleoid-binding ParA-ATPase, ensure…”
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17
Nanopore tweezers measurements of RecQ conformational changes reveal the energy landscape of helicase motion
Published in Nucleic acids research (14-10-2022)“…Helicases are essential for nearly all nucleic acid processes across the tree of life, yet detailed understanding of how they couple ATP hydrolysis to…”
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18
The toposiomerase IIIalpha-RMI1-RMI2 complex orients human Bloom’s syndrome helicase for efficient disruption of D-loops
Published in Nature communications (03-02-2022)“…Homologous recombination (HR) is a ubiquitous and efficient process that serves the repair of severe forms of DNA damage and the generation of genetic…”
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General Method to Increase Carboxylic Acid Content on Nanodiamonds
Published in Molecules (Basel, Switzerland) (23-01-2022)“…Carboxylic acid is a commonly utilized functional group for covalent surface conjugation of carbon nanoparticles that is typically generated by acid oxidation…”
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Single molecule analysis of CENP-A chromatin by high-speed atomic force microscopy
Published in eLife (20-09-2023)“…Chromatin accessibility is modulated in a variety of ways to create open and closed chromatin states, both of which are critical for eukaryotic gene…”
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