Results 111 to 120 of about 11,339,355 (391)

In situ molecular organization and heterogeneity of the Legionella Dot/Icm T4SS

FEBS Letters, EarlyView.
We present a nearly complete in situ model of the Legionella Dot/Icm type IV secretion system, revealing its central secretion channel and identifying new components. Using cryo‐electron tomography with AI‐based modeling, our work highlights the structure, variability, and mechanism of this complex nanomachine, advancing understanding of bacterial ...
Przemysław Dutka, Yuxi Liu, Stefano Maggi, Debnath Ghosal, Jue Wang, Prashant P. Damke, Stephen D. Carter, Wei Zhao, Sukhithasri Vijayrajratnam, Joseph P. Vogel, Carrie L. Shaffer, Grant J. Jensen   +11 more
wiley   +1 more source

Creep of Alginate-Gelatin-Hyaluronic acid strands and cell viability after bioprinting [PDF]

Anais da Academia Brasileira de Ciências
The success of 3D bioprinting in tissue engineering relies on i) precise bioink deposition for creating intricate tissue architectures and ii) good cell viability after printing.
JOAQUÍN H. PALMA, MARCOS BERTUOLA, ANA GONZÁLEZ-WUSENER, CARLOS O. ARREGUI, ÉLIDA BEATRIZ HERMIDA   +4 more
doaj   +1 more source

Dried berry pomace as a source of high value-added bioproduct: drying kinetics and bioactive quality indices

International Journal of Food Properties, 2020
Drying kinetics and bioactive quality indices (total phenolics, flavonols, anthocyanins, and antioxidant activity) of fermented Merlot grape, cranberry, highbush blueberry, and wild lowbush blueberry pomace were evaluated.
K. A. Ross, N. DeLury, L. Fukumoto, M. S. Diarra   +3 more
doaj   +1 more source

Energy stress-mediated AMPK activation inhibits ferroptosis

Nature Cell Biology, 2020
Energy stress depletes ATP and induces cell death. Here we identify an unexpected inhibitory role of energy stress on ferroptosis, a form of regulated cell death induced by iron-dependent lipid peroxidation. We found that ferroptotic cell death and lipid
Hyemin Lee, Fereshteh Zandkarimi, Yilei Zhang, Jitendra Kumar Meena, Jongchan Kim, L. Zhuang, S. Tyagi, Li Ma, Thomas F. Westbrook, G. Steinberg, Daisuke Nakada, B. Stockwell, B. Gan   +12 more
semanticscholar   +1 more source

Sequence determinants of RNA G‐quadruplex unfolding by Arg‐rich regions

FEBS Letters, EarlyView.
We show that Arg‐rich peptides selectively unfold RNA G‐quadruplexes, but not RNA stem‐loops or DNA/RNA duplexes. This length‐dependent activity is inhibited by acidic residues and is conserved among SR and SR‐related proteins (SRSF1, SRSF3, SRSF9, U1‐70K, and U2AF1).
Naiduwadura Ivon Upekala De Silva, Puspa Kunwar, Md Ibnul Rifat Rahman, Joanna Koryo Kwao, Nathan Lehman, Zihan Zhang, Trenton Paul, Claire Cheng, Nicholas Truex, Hui‐Ting Lee, Jun Zhang   +10 more
wiley   +1 more source

Thermal desorption study of physical forces at the PTFE surface [PDF]

Thermal desorption spectroscopy (TDS) of the polytetrafluoroethylene (PTFE) surface was successfully employed to study the possibile role of physical forces in the enhancement of metal-PTFE adhesion by radiation.
Pepper, S. V., Wheeler, D. R.
core   +1 more source

The Effects of Acid Etching on the Nanomorphological Surface Characteristics and Activation Energy of Titanium Medical Materials

Materials, 2017
The purpose of this study was to characterize the etching mechanism, namely, the etching rate and the activation energy, of a titanium dental implant in concentrated acid and to construct the relation between the activation energy and the nanoscale ...
K. Hung, Yi-Chih Lin, H. Feng
semanticscholar   +1 more source

Structural instability impairs function of the UDP‐xylose synthase 1 Ile181Asn variant associated with short‐stature genetic syndrome in humans

FEBS Letters, EarlyView.
The Ile181Asn variant of human UDP‐xylose synthase (hUXS1), associated with a short‐stature genetic syndrome, has previously been reported as inactive. Our findings demonstrate that Ile181Asn‐hUXS1 retains catalytic activity similar to the wild‐type but exhibits reduced stability, a looser oligomeric state, and an increased tendency to precipitate ...
Tuo Li, Pedro A. Sánchez‐Murcia, Bernd Nidetzky   +2 more
wiley   +1 more source

The Effects of the Activation Energy on the Intrinsic Instability of Adiabatic and Non-Adiabatic Premixed Flames

Journal of Fluid Science and Technology, 2008
The effects of the activation energy on the intrinsic instability of adiabatic and non-adiabatic premixed flames were studied by two-dimensional unsteady calculations of reactive flows based on the compressible Navier-Stokes equation.
Amornrat KAEWPRADAP, Satoshi KADOWAKI
doaj   +1 more source

Relaxation of transport properties in electron doped SrTiO3

, 2007
We electron-dope single crystal samples of SrTiO_3 by exposing them to Ar^+ irradiation and observe carrier mobility similar in its magnitude and temperature dependence to the carrier mobility in other electron-doped SrTiO3 systems.
Klein, Lior, Schultz, Moty
core   +1 more source