Results 61 to 70 of about 278,151 (262)

An unexpected alternative viologen electron mediator site in tungsten‐containing formate dehydrogenase

open access: yesFEBS Letters, EarlyView.
An unexpected alternative interaction site for ethyl viologen was identified in formate dehydrogenase 1 from Methylorubrum extorquens. Combined mutagenesis, kinetic analysis, and docking revealed that aromatic residues near an iron–sulfur cluster enable flavin mononucleotide‐independent electron transfer, offering a framework for engineering improved ...
Eleni G. Poloniataki, Yong Hwan Kim
wiley   +1 more source

Mixed Moore Cayley graphs

open access: yesElectronic Notes in Discrete Mathematics, 2014
Cayley graphs are well known objects with interesting properties, also in the context of Moore graphs and digraphs. In $1978$ Bos\'ak extended Moore's property to the mixed setting (with arcs allowed along with edges), in the so called mixed Moore graphs: those having a unique trail--path?
Nacho López   +2 more
openaire   +1 more source

Salmonella lipopolysaccharide‐containing supported lipid bilayers as platforms to study bacteriophage interactions

open access: yesFEBS Letters, EarlyView.
We present robust protocols for the preparation of supported lipid bilayers (SLBs) incorporating either Salmonella smooth LPS or outer membrane vesicles (OMVs). We use a combination of quartz crystal microbalance with dissipation (QCM‐D) and fluorescence microscopy to both characterize the SLBs of various compositions and to probe their interactions ...
Hudson P. Pace   +6 more
wiley   +1 more source

Mixing 3-Colourings in Bipartite Graphs [PDF]

open access: yesEuropean Journal of Combinatorics, 2007
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Luis Cereceda   +2 more
openaire   +3 more sources

Modelling stem cell differentiation related processes—A practical overview for biologists

open access: yesFEBS Letters, EarlyView.
Stem cell differentiation is complex and difficult to control experimentally. This review introduces suitable computational modelling approaches that can support stem cell research, from mechanistic ODE and abstract models to multiscale and deep learning methods.
Ricco Zeegelaar   +4 more
wiley   +1 more source

A Geometric Property of the Laplacian matrix of a Connected Nonsingular Mixed Graph

open access: yesJournal of Chemistry, 2020
In this paper, we give a geometric interpretation of the Laplacian matrix of a connected nonsingular mixed graph which generalizes the results of M. Fiedler (M. Fiedler, Geometry of the Laplacian, Linear Algebra Appl., 2005, 403: 409–413).
Zheng-Da Zhou, Shi-Cai Gong
doaj   +1 more source

A note on orientations of mixed graphs

open access: yesDiscrete Applied Mathematics, 2002
The authors study an orientation problem on mixed graphs. The goal is to obtain a directed graph satisfying a certain connectivity requirement. First the authors continue the study of the pair connectivity problem and show that it is NP-complete for mixed graphs. Then they prove several results for two pairs of nodes of mixed graphs.
Esther M. Arkin, Refael Hassin
openaire   +1 more source

Coloring Mixed and Directional Interval Graphs

open access: yes, 2023
A mixed graph has a set of vertices, a set of undirected egdes, and a set of directed arcs. A proper coloring of a mixed graph $G$ is a function $c$ that assigns to each vertex in $G$ a positive integer such that, for each edge $uv$ in $G$, $c(u) \ne c(v)$ and, for each arc $uv$ in $G$, $c(u) < c(v)$. For a mixed graph $G$, the chromatic number $χ(G)
Grzegorz Gutowski   +5 more
openaire   +5 more sources

Design and analysis strategies for robust microbiome ageing research

open access: yesFEBS Letters, EarlyView.
The gut microbiome changes with age and associates with age‐related morbidity and mortality, establishing it as a potential biomarker and intervention target for ageing. Realising this potential requires methodological rigour, yet distinguishing biological signals from methodological artefacts remains challenging across cohorts. This review provides an
Mark Olenik   +5 more
wiley   +1 more source

Principal minors of Hermitian (quasi-)Laplacian matrix of second kind for mixed graphs [PDF]

open access: yesDiscrete Mathematics Letters, 2022
Qi Xiong, Gui-Xian Tian, Shu-Yu Cui
doaj   +1 more source

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