Results 41 to 50 of about 69,820 (250)

Complete dissection of transcription elongation reveals slow translocation of RNA polymerase II in a linear ratchet mechanism

eLife, 2013
During transcription elongation, RNA polymerase has been assumed to attain equilibrium between pre- and post-translocated states rapidly relative to the subsequent catalysis.
Manchuta Dangkulwanich, Toyotaka Ishibashi, Shixin Liu, Maria L Kireeva, Lucyna Lubkowska, Mikhail Kashlev, Carlos J Bustamante   +6 more
doaj   +1 more source

Protein pyrophosphorylation by inositol pyrophosphates — detection, function, and regulation

FEBS Letters, EarlyView.
Protein pyrophosphorylation is an unusual signaling mechanism that was discovered two decades ago. It can be driven by inositol pyrophosphate messengers and influences various cellular processes. Herein, we summarize the research progress and challenges of this field, covering pathways found to be regulated by this posttranslational modification as ...
Sarah Lampe, Tanmay Kumar Mohanty, Rashna Bhandari, Dorothea Fiedler   +3 more
wiley   +1 more source

High-Speed Single-Molecule Tracking of CXCL13 in the B-Follicle

Frontiers in Immunology, 2018
Soluble factors are an essential means of communication between cells and their environment. However, many molecules readily interact with extracellular matrix components, giving rise to multiple modes of diffusion.
Helen Miller, Helen Miller, Jason Cosgrove, Jason Cosgrove, Jason Cosgrove, Adam J. M. Wollman, Adam J. M. Wollman, Emily Taylor, Emily Taylor, Zhaokun Zhou, Zhaokun Zhou, Peter J. O’Toole, Peter J. O’Toole, Mark C. Coles, Mark C. Coles, Mark C. Coles, Mark C. Leake, Mark C. Leake   +17 more
doaj   +1 more source

Valosin‐containing protein counteracts ATP‐driven dissolution of FUS condensates through its ATPase activity in vitro

FEBS Letters, EarlyView.
Biomolecular condensates formed by fused in sarcoma (FUS) are dissolved by high ATP concentrations yet persist in cells. Using a reconstituted system, we demonstrate that valosin‐containing protein (VCP), an AAA+ ATPase, counteracts ATP‐driven dissolution of FUS condensates through its D2 ATPase activity.
Hitomi Kimura, Shin‐ichi Tate, Kyota Yasuda   +2 more
wiley   +1 more source

DeepFRET, a software for rapid and automated single-molecule FRET data classification using deep learning

eLife, 2020
Single-molecule Förster Resonance energy transfer (smFRET) is an adaptable method for studying the structure and dynamics of biomolecules. The development of high throughput methodologies and the growth of commercial instrumentation have outpaced the ...
Johannes Thomsen, Magnus Berg Sletfjerding, Simon Bo Jensen, Stefano Stella, Bijoya Paul, Mette Galsgaard Malle, Guillermo Montoya, Troels Christian Petersen, Nikos S Hatzakis   +8 more
doaj   +1 more source

Single Molecule DNA Biophysics with Atomic Force Microscopy [PDF]

Single Molecules, 2000
Structural and functional properties of double stranded deoxyribonucleic acid (dsDNA) are investigated by atomic force microscopy (AFM) on a single molecule level. Here, we characterize different linear and circular DNA systems in terms of their geometry and topology, and visualize enzyme binding of restriction endonuclease Hae III to DNA. Manipulation
Anselmetti, Dario, Fritz, Jürgen, Smith, Benjamin, Fernandez-Busquets, Xavier   +3 more
openaire   +3 more sources

Organizing the interface—Plasma membrane architecture and receptor dynamics in virus‐cell interactions

FEBS Letters, EarlyView.
Plasma membranes contain dynamic nanoscale domains that organize lipids and receptors. Because viruses operate at similar scales, this architecture shapes early infection steps, including attachment, receptor engagement, and entry. Using influenza A virus and HIV‐1 as examples, we highlight how receptor nanoclusters, multivalent glycan interactions ...
Jan Schlegel, Christian Sieben
wiley   +1 more source

Developing in vivo biophysics by fishing for single molecules

Developmental Biology, 2010
Single-molecule techniques (SMT) provide the possibility to quantitatively analyze the action of single molecules. SMTs can resolve the distribution of states of an ensemble of molecules, collecting information that is otherwise not accessible by typical ensemble techniques.
Wang, Xi, Wohland, Thorsten, Korzh, Vladimir   +2 more
openaire   +2 more sources

Advances in magnetic tweezers for single molecule and cell biophysics [PDF]

Integrative Biology, 2013
Magnetic tweezers (MTW) enable highly accurate forces to be transduced to molecules to study mechanotransduction at the molecular or cellular level. We review recent MTW studies in single molecule and cell biophysics that demonstrate the flexibility of this technique.
Kilinc, Devrim, Lee, Gil U.
openaire   +4 more sources

Biophysical approaches for studying viral entry

FEBS Letters, EarlyView.
Viruses infect all living organisms and have been responsible for major epidemics and pandemics. Their ongoing evolutionary battle with host defenses creates a constant need for improved tools to study viral behavior. Advancing methods to probe viral attachment, fusion, and genome release deepen our understanding of how infections begin and support the
Inbar Yosibash, Raya Sorkin
wiley   +1 more source