Results 61 to 70 of about 3,740,797 (303)

Structural and biochemical analysis of a B12 superbinder

FEBS Letters, EarlyView.
BtuG proteins are vitamin B12 scavengers in Bacteroides thetaiotaomicron, a dominant human gut bacterium. We present crystal structures of three BtuG homologs bound to cobalamin and its precursor cobinamide, revealing picomolar binding affinities, among the highest known for any natural protein.
Jose M. Martinez Felices, Jacob J. Whittaker, Dirk J. Slotboom, Albert Guskov   +3 more
wiley   +1 more source

Evaluation of Color Stability and Surface Abrasion of Nano-modified Glass Ionomer Cement with Dentifrices: An In Vitro Study [PDF]

International Journal of Prosthodontics and Restorative Dentistry
Purpose: To evaluate the color stability and surface abrasion of nanoparticle-modified glass ionomer cement (GIC) with dentifrices. Materials and methods: Green-synthesized nanoparticle chitosan–titanium–zirconia–hydroxyapatite (Ch–Ti–Zr–HA) was prepared
Harini Palani, Jessy Paulraj, Subhabrata Maiti   +2 more
doaj   +1 more source

STABILITY OF COLOR-FLAVOR LOCKED STRANGELETS [PDF]

International Journal of Modern Physics A, 2006
The stability of color-flavor locked (CFL) strangelets is studied in the three-flavor Nambu–Jona-Lasinio model. We consider all quark flavors to be massless, for simplicity. By making use of the multiple reflection expansion, we explicitly take into account finite size effects and formulate the thermodynamic potential for CFL strangelets. We find that
openaire   +2 more sources

Linear time self-stabilizing colorings [PDF]

Information Processing Letters, 2003
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Stephen T. Hedetniemi, David Pokrass Jacobs, Pradip K. Srimani   +2 more
openaire   +1 more source

From junk to function — How weak selection in eukaryotes builds new parts and drives genomic complexity

FEBS Letters, EarlyView.
How do genomes gain new functional parts? In eukaryotes, which tend to evolve under weak selection, much of the genome is junk. Palazzo and Qiu borrow the logic of Markov chains to show how non‐functional DNA becomes functional through the appearance of intermediate states, which arise due to epistasis, buffering, and biochemical messiness, allowing ...
Alexander F. Palazzo, Yi Qiu
wiley   +1 more source

Effect of staining beverages on color stability of composite: A spectrophotometric study

Journal of Pharmacy and Bioallied Sciences
Objective: This study used spectrophotometry to examine how staining beverages affect the color stability of three commercial composite materials (nanohybrid composite (A), bulk fill composite (B), and flowable composite (C)) over time.
Radhika Thakkar, Anuj P Maini, Sahil Mogla, Syed Shah Hussain Qadri, Praveen K Varma, Alok Dubey   +5 more
doaj   +1 more source

Artificial molecular machines and motors—Design and control of nanoscale motion

FEBS Letters, EarlyView.
Molecules are constantly moving because of thermal fluctuations, but random motion alone cannot be exploited to perform directional tasks. Artificial molecular machines use chemical, electrical, or light energy to bias this motion. Molecular shuttles, rotary motors, and supramolecular pumps illustrate how nanoscale movement can be controlled and ...
Leonardo Andreoni, Alberto Credi
wiley   +1 more source

COLOR STABILITY OF NATURALLY DYED DENIM FABRICS [PDF]

Annals of the University of Oradea: Fascicle of Textiles, Leatherwork, 2014
The desire to colour textiles is as old as spinning and weaving. Natural dyes have been used since thousands of years for their long endurance, soft and elegant colours. But the invention of synthetic dyes has limited the application of natural dyes. The
SUBTIRICA Adriana-Ioana, TASKOPARAN Fazile, GHITULEASA Carmen, VAMESU Mariana   +3 more
doaj  

Circular RNA expression landscapes in myelodysplastic neoplasms: Associations with mutational signatures and disease progression

Molecular Oncology, EarlyView.
In this explorative study, the abundance of circular RNA molecules in bone marrow stem cells was found to be elevated in patients with high‐risk myelodysplastic neoplasms, and to be associated with an increased risk of progression to acute myeloid leukemia.
Eileen Wedge, Morten Tulstrup, Gabriele Todisco, Pedro Moura, Christophe Côme, Jakob Werner Hansen, Jakob Schmidt Jespersen, Balthasar Schlotmann, Maria Creignou, Mette Dahl, Claudia Schöllkopf, Klas Raaschou‐Jensen, Krister Wennerberg, Bo Porse, Joachim Weischenfeldt, Eva Hellström‐Lindberg, Lasse Sommer Kristensen, Kirsten Grønbæk   +17 more
wiley   +1 more source

IMPDH inhibition enhances cytarabine efficacy in SAMHD1‐expressing leukaemia cells via guanine nucleotide depletion

Molecular Oncology, EarlyView.
Cytarabine is a key therapy for acute myeloid leukaemia (AML), but its efficacy is limited by the dNTPase SAMHD1, which hydrolyses its active metabolite. Screening nucleotide biosynthesis inhibitors revealed that IMPDH inhibitors selectively sensitise SAMHD1‐proficient AML cells to cytarabine.
Miriam Yagüe‐Capilla, Christopher Dirks, Caroline Eiden, Sonja K. Fesenmayer, Femke M. Hormann, Yolande Klootsema, Ingrid Lilienthal, Si Min Zhang, Nikolas Herold, Sean G. Rudd   +9 more
wiley   +1 more source