Results 51 to 60 of about 1,229 (303)

Chameleon sequences reveal structural effects in proteins representing micelle‐like distribution of hydrophobicity

open access: yesFEBS Open Bio, EarlyView.
Amino acids sequence of two different proteins with the same sequence (chameleon sequence—black boxes) represent in 3D structure of the proteins different secondary structures: HHHH—helical and BBB—Beta‐structural. The chains folded in water environment adopt different III‐order structures in which the chameleon fragments appear to adopt similar status
Irena Roterman   +4 more
wiley   +1 more source

Some Notes on Relative Commutators

open access: yesInPrime, 2020
Let G be a group and α ϵ Aut(G).  An α-commutator of elements x, y ϵ G is defined as [x, y]α = x-1y-1xyα. In 2015, Barzegar et al. introduced an α-commutator of elements of G and defined a new generalization of nilpotent groups by using the definition of
Masoumeh Ganjali, Ahmad Erfanian
doaj   +1 more source

Perfecting the Nearly Perfect [PDF]

open access: yesPure and Applied Mathematics Quarterly, 2008
We introduce a natural variant of the notion of nearly perfect complex. We show that this variant gives rise to canonical perfect complexes and prove several useful properties of this construction (including additivity of the associated Euler characteristics oil suitable exact triangles).
openaire   +1 more source

YIPFα1A expression is regulated by multilayered molecular mechanisms

open access: yesFEBS Open Bio, EarlyView.
YIPFα1A, a five‐pass Golgi protein, is regulated at multiple layers. (1) Rare‐codon enrichment drives translation‐coupled mRNA decay. (2) A proximal 3′‐UTR element stabilizes mRNA. (3) A distal 3′‐UTR element included by alternate poly(A) site usage represses translation, which can be overridden by the proximal 3′‐UTR element.
Tokio Takaji   +2 more
wiley   +1 more source

“Correspondence” (dang 當) and “Cultivating Perfectness” (Yang Zheng 養正): On the Concept of Perfectness (zheng 正) in the Yijing

open access: yesReligions
“Properness, correctness and uprightness” (zheng 正) refers to a common and significant concept in Chinese philosophy. In Chinese philosophical discourse, zheng embodies moral ideals.
Solsar Kong
doaj   +1 more source

المتطلبات التربوية اللازمة لتحقيق بيئة جامعية نموذجية على ضوء مدخل الإرجونوميکس (الهندسة البشرية) [PDF]

open access: yesMaǧallaẗ Kulliyyaẗ Al-Tarbiyyẗ Ǧamiʿaẗ Banhā, 2019
استهدف البحث وضع قائمة مقترحة بالمتطلبات التربوية اللازمة لتحقيق بيئة جامعية نموذجية على ضوء مدخل الإرجونوميکس، مستخدما المنهج الوصفي التحليلي وذلک من خلال الدراسة النظرية التحليلية للمدخل وتوظيفه في المجال التربوي بإسهام عناصره وأبعاده وتطبيقاته في ...
محمد محمد أحمد عبد الخالق
doaj   +1 more source

Strong and weak Perfect Digraph Theorems for perfect, \alpha-perfect and strictly perfect digraphs

open access: yesDiscussiones Mathematicae Graph Theory, 2023
Summary: Perfect digraphs have been introduced in [\textit{S. D. Andres} and \textit{W. Hochstättler}, J. Graph Theory 79, No. 1, 21--29 (2015; Zbl 1312.05059)] as those digraphs where, for any induced subdigraph, the dichromatic number and the symmetric clique number are equal.
openaire   +2 more sources

Small RNA pathways in mammalian oocytes

open access: yesFEBS Open Bio, EarlyView.
Three distinct small RNA pathways operate in mammalian oocytes: RNAi interference (RNAi), the microRNA (miRNA) pathway, and the PIWI‐associated RNA (piRNA) pathway. These pathways use small RNAs to guide sequence‐specific repression and contribute to oocyte biology by targeting genes and mobile elements or appear insignificant since different ...
Petr Svoboda, Josef Pasulka
wiley   +1 more source

Small models of convex fragments of definable subsets

open access: yesҚарағанды университетінің хабаршысы. Математика сериясы, 2020
This article discusses the problems of that part of Model Theory that studies the properties of countable models of inductive theories with additional properties, or, in other words, Jonsson theories.
A.R. Yeshkeyev, N.V. Popova
doaj   +1 more source

Clique-perfectness and balancedness of some graph classes [PDF]

open access: yes, 2014
A graph is clique-perfect if the maximum size of a clique-independent set (a set of pairwise disjoint maximal cliques) and the minimum size of a clique-transversal set (a set of vertices meeting every maximal clique) coincide for each induced subgraph. A
Safe, Martin Dario   +3 more
core   +1 more source

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