Results 111 to 120 of about 10,000,760 (302)

(E)-Ethyl 3-(2-fluoroanilino)-2-(4-methoxyphenyl)acrylate

open access: yesActa Crystallographica Section E, 2008
The title compound, C18H18FNO3, consists of three individually planar subunits, namely two substituted benzene rings and one aminoacrylate group. The dihedral angle between the two benzene rings is 47.48 (8)°.
Hai-Liang Zhu   +3 more
doaj   +1 more source

Cassini observations of the thermal plasma in the vicinity of Saturn's main rings and the F and G rings [PDF]

open access: yes, 2005
The ion mass spectrometer on Cassini detected enhanced ion flux near Saturn's main rings that is consistent with the presence of atomic and molecular oxygen ions in the thermal plasma.
Fish, BA   +12 more
core  

Smarandache Zero Divisors [PDF]

open access: yes, 2001
Studying the notion of Smarandache zero divisor in semigroups and rings, illustrating them with examples and proving some interesting results about ...
Vasantha, Kandasamy
core   +1 more source

Liver organoids: modelling complexity in homeostasis and disease

open access: yesFEBS Letters, EarlyView.
Studying liver in vitro has been challenging because simple 2D cell cultures fail to capture liver's cellular and architectural complexity. To bridge this gap, scientists increasingly use organoids, 3D liver models which better mimic liver composition and function. This review examines recent advances in liver organoid complexity and realism, discusses
Anna M. Dowbaj, Meritxell Huch
wiley   +1 more source

Super strongly clean group rings

open access: yesDiscussiones Mathematicae - General Algebra and Applications, 2023
Amit B. Singh, Susheel Kumar
doaj   +1 more source

Ligand‐dependent transcriptional heterogeneity in cell cycle gene expression delays G1/S entry

open access: yesFEBS Letters, EarlyView.
EGF and HRG induce distinct G1/S progression programs in ErbB2‐amplified BT474 breast cancer cells. Despite activating the potent ErbB2–ErbB3 heterodimer, HRG does not accelerate cell‐cycle entry. Instead, EGF promotes earlier restriction‐point passage via ERK–FOS signaling, whereas HRG activates the AKT–MYC axis, driving transcriptional heterogeneity ...
Ririn Rahmala Febri   +5 more
wiley   +1 more source

Emerging experimental and computational methods for studying redox‐regulated structural transitions

open access: yesFEBS Letters, EarlyView.
Redox reactions can reshape proteins and alter how they behave in cells, with important consequences for health and disease. This review explores emerging experimental and computational approaches for discovering these redox‐sensitive protein switches, revealing their structural effects, and predicting their behavior, opening new opportunities to ...
Tasneem Rass   +2 more
wiley   +1 more source

On the General Linear Group over Polynomial Rings

open access: yesMathematics
Within algebraic K-theory, when A↠B is a ring homomorphism, it is frequently important to determine the image of the induced homomorphism GLk(A)→GLk(B).
Francis E. A. Johnson
doaj   +1 more source

Classification of Finite Rings of Order p6 by Generators and Relations

open access: yesJournal of Mathematics, 2013
For any finite abelian group (R,+), we define a binary operation or “multiplication” on R and give necessary and sufficient conditions on this multiplication for R to extend to a ring. Then we show when two rings made on the same group are isomorphic. In
P. Karimi Beiranvand   +2 more
doaj   +1 more source

Structural and biochemical analysis of a B12 superbinder

open access: yesFEBS 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   +3 more
wiley   +1 more source

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