Results 111 to 120 of about 2,644,664 (312)

The ramsey number for theta graph versus a clique of order three and four

open access: yesDiscussiones Mathematicae Graph Theory, 2014
For any two graphs F1 and F2, the graph Ramsey number r(F1, F2) is the smallest positive integer N with the property that every graph on at least N vertices contains F1 or its complement contains F2 as a subgraph.
Bataineh M.S.A.   +2 more
doaj   +1 more source

On independent [1,2]-sets in trees

open access: yesDiscussiones Mathematicae Graph Theory, 2018
An independent $[1,k]$-set $S$ in a graph $G$ is a dominating set which is independent and such that every vertex not in $S$ has at most $k$ neighbors in it. The existence of such sets is not guaranteed in every graph and trees having an independent $[1,k]$-set have been characterized.
Sahar A. Aleid   +2 more
openaire   +4 more sources

The planar cell polarity protein Vangl2 interacts with the PDZ‐domains of Scribble but not with a unique PDZ‐like domain in Inturned

open access: yesFEBS Letters, EarlyView.
Structural and biochemical characterisations show that the planar cell polarity (PCP) protein Inturned harbours a unique PDZ‐like domain that does not bind canonical PDZ‐binding motifs (PBMs) like that of another PCP protein Vangl2. In contrast, the apical‐basal polarity protein Scribble contains four PDZ domains that bind Vangl2, but one PDZ domain ...
Stephan Wilmes   +4 more
wiley   +1 more source

Calpain small subunit homodimerization is robust and calcium‐independent

open access: yesFEBS Letters, EarlyView.
Calpains dimerize via penta‐EF‐hand (PEF) domains. Using single‐molecule force spectroscopy, we measured the strength and kinetics of PEF–PEF homodimer binding. The interaction is robust, shows a transient conformational step before dissociation, and remains largely insensitive to Ca2+.
Nesha May O. Andoy   +4 more
wiley   +1 more source

Bounds on the Clique and the Independence Number for Certain Classes of Graphs

open access: yesMathematics
In this paper, we study the class of graphs Gm,n that have the same degree sequence as two disjoint cliques Km and Kn, as well as the class G¯m,n of the complements of such graphs.
Valentin E. Brimkov, Reneta P. Barneva
doaj   +1 more source

The complexity of combinatorial optimization problems on d‐dimensional boxes [PDF]

open access: yes, 2007
The Maximum Independent Set problem in d-box graphs, i.e., in intersection graphs of axis-parallel rectangles in R-d, is known to be NP-hard for any fixed d >= 2.
Chlebikova, Janka   +5 more
core   +1 more source

Structural insights into an engineered feruloyl esterase with improved MHET degrading properties

open access: yesFEBS Letters, EarlyView.
A feruloyl esterase was engineered to mimic key features of MHETase, enhancing the degradation of PET oligomers. Structural and computational analysis reveal how a point mutation stabilizes the active site and reshapes the binding cleft, expading substrate scope.
Panagiota Karampa   +5 more
wiley   +1 more source

Simplicial complexes defined on groups

open access: yesOpen Mathematics
This study makes some preliminary observations towards an extension of current work on graphs defined on groups to simplicial complexes. I define a variety of simplicial complexes on a group, which are preserved by automorphisms of the group, and in many
Cameron Peter J.
doaj   +1 more source

Independent sets and repeated degrees

open access: yesDiscrete Mathematics, 1997
\textit{P. Erdös}, \textit{S. Fajtlowicz} and \textit{W. Staton} [Discrete Math. 92, No. 1-3, 85-88 (1991; Zbl 0752.05028)] showed that every triangle-free graph of order \(n\) in which no degree is repeated more than twice is bipartite and thus has independence number at least \(n/2\). \textit{P. Erdös}, \textit{R. Faudree}, \textit{T. J.
Bollobás, B, Scott, A
openaire   +3 more sources

Data statistics of training set and independent testing set.

open access: yes, 2015
Data statistics of training set and independent testing set.
Tzong-Yi Lee (10134)   +5 more
core   +1 more source

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