نتایج جستجو برای: filament

تعداد نتایج: 18670  

Journal: :Nanoscale 2015
E Yalon I Karpov V Karpov I Riess D Kalaev D Ritter

Filament growth is a key aspect in the operation of bipolar resistive random access memory (RRAM) devices, yet there are conflicting reports in the literature on the direction of growth of conductive filaments in valence change RRAM devices. We report here that an insulating gap between the filament and the semiconductor electrode can be detected by the metal-insulator-semiconductor bipolar tra...

Journal: :Journal of cell science 1997
K Djabali B de Néchaud F Landon M M Portier

The small heat shock protein alphaB-crystallin interacts with intermediate filament proteins. Using a co-sedimentation assay, we showed that in vitro binding of alphaB-crystallin to peripherin and vimentin was temperature-dependent. Specifically, a synthetic peptide representing the first ten residues of alphaB-crystallin was involved in this interaction. When cells were submitted to different ...

Journal: :Chaos 2010
A J Foulkes D Barkley V N Biktashev I V Biktasheva

Rotating spiral and scroll waves (vortices) are investigated in the FitzHugh-Nagumo model of excitable media. The focus is on a parameter region in which there exists bistability between alternative stable vortices with distinct periods. Response functions are used to predict the filament tension of the alternative scrolls and it is shown that the slow-period scroll has negative filament tensio...

2007
David Mayerich Zeki Melek John Keyser

Recent developments in biomedical imaging are producing massive data sets containing structures, such as fine filaments, that are difficult to visualize. In this paper, we describe a method for tracking filaments and show how this technique can be used for segmentation and visualization. Instead of segmenting individual slices of a 3D data set, a large volume is processed allowing the filaments...

2016
Teresa T. Bonello Miro Janco Jeff Hook Alex Byun Mark Appaduray Irina Dedova Sarah Hitchcock-DeGregori Edna C. Hardeman Justine R. Stehn Till Böcking Peter W. Gunning

The tropomyosin family of proteins form end-to-end polymers along the actin filament. Tumour cells rely on specific tropomyosin-containing actin filament populations for growth and survival. To dissect out the role of tropomyosin in actin filament regulation we use the small molecule TR100 directed against the C terminus of the tropomyosin isoform Tpm3.1. TR100 nullifies the effect of Tpm3.1 on...

Journal: :Molecular cell 2006
Shelley L Lusetti Michael D Hobbs Elizabeth A Stohl Sindhu Chitteni-Pattu Ross B Inman H Steven Seifert Michael M Cox

The RecX protein inhibits RecA filament extension, leading to net filament disassembly. The RecF protein physically interacts with the RecX protein and protects RecA from the inhibitory effects of RecX. In vitro, efficient RecA filament formation onto single-stranded DNA binding protein (SSB)-coated circular single-stranded DNA (ssDNA) in the presence of RecX occurs only when all of the RecFOR ...

2016
Julien Pernier Shashank Shekhar Antoine Jegou Bérengère Guichard Marie-France Carlier

Cell motility and actin homeostasis depend on the control of polarized growth of actin filaments. Profilin, an abundant regulator of actin dynamics, supports filament assembly at barbed ends by binding G-actin. Here, we demonstrate how, by binding and destabilizing filament barbed ends at physiological concentrations, profilin also controls motility, cell migration, and actin homeostasis. Profi...

Journal: :Structure 2007
Mauro Modesti Dejan Ristic Thijn van der Heijden Cees Dekker Joost van Mameren Erwin J G Peterman Gijs J L Wuite Roland Kanaar Claire Wyman

The DNA strand-exchange reactions defining homologous recombination involve transient, nonuniform allosteric interactions between recombinase proteins and their DNA substrates. To study these mechanistic aspects of homologous recombination, we produced functional fluorescent human RAD51 recombinase and visualized recombinase interactions with single DNA molecules in both static and dynamic cond...

2016
William M. McFadden Patrick M. McCall Edwin M. Munro

Actomyosin-based cortical flow is a fundamental engine for cellular morphogenesis. Cortical flows are generated by cross-linked networks of actin filaments and myosin motors, in which active stress produced by motor activity is opposed by passive resistance to network deformation. Continuous flow requires local remodeling through crosslink unbinding and and/or filament disassembly. But how loca...

Journal: :Journal of the Textile Machinery Society of Japan 1961

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