Results 101 to 110 of about 2,968,753 (303)

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

open access: yesFEBS 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

DYNAMIC NETWORK CONNECTEDNESS OF BRICS EQUITY MARKETS DURING THE COVID-19 ERA [PDF]

open access: yes, 2021
This study examines the return and volatility network connectedness of BRICS and Turkey equity markets between January 2019 and March 2021 by utilizing the time varying parameter-VAR (TVP-VAR) based frequency connectedness approach of Barunik and ...
Polat, Onur
core  

Connectedness and investment strategies of volatile assets: DCC-GARCH R2 analysis ofcryptocurrencies and emerging market sectors

open access: yesBorsa Istanbul Review
This study investigates the return propagation dynamics between cryptocurrencies and emerging market sectoral indices (EMSI), focusing on portfolio impact from Bitcoin, Ethereum, and two gold-backed cryptocurrencies (PAXG and X8X).
Adnan Aslam, Rayenda Khresna Brahmana
doaj   +1 more source

The Shewanella oneidensis Fic enzyme SoFic targets the switch‐I region of EF‐Tu for AMPylation

open access: yesFEBS Letters, EarlyView.
Fic enzymes mediate diverse post‐translational modifications across all domains of life, including AMPylation. Prokaryotic EF‐Tu can be AMPylated and deAMPylated by the conserved Fic enzyme SoFic. Structural and biochemical approaches were used to characterize the effect of AMPylation on EF‐Tu, SoFic's enzymatic activities, and the enzyme‐target ...
Svenja Runge   +6 more
wiley   +1 more source

School connectedness: student voices examine power and subjectivity [PDF]

open access: yes, 2005
Ideally, school would be a place where all students felt that they belonged. However, the reality is that many students feel as though they do not belong to their school community.
Thompson, Greg   +3 more
core  

L‐aspartate oxidase provides new insights into fumarate reduction in anaerobic darkness in Synechocystis sp. PCC6803

open access: yesFEBS Letters, EarlyView.
Synechocystis strains deficient in succinate dehydrogenase (SDH) secrete more succinate than the WT under dark anaerobic conditions, supporting that SDH then primarily acts as SDH, not as a fumarate reductase. L‐aspartate oxidase (Laspo) from Synechocystis is functional under anaerobic conditions, reducing fumarate to succinate.
Kateryna Kukil   +3 more
wiley   +1 more source

Dynamic pairwise connectedness.

open access: yes
This figure presents the dynamic pairwise connectedness index between 4 commodity sectors and 11 industry stocks. The results are based on the TVP-VAR model with a lag length of order one (BIC) and a generalized variance decomposition of 20-step-ahead ...
Chao Xiao (3418145)   +2 more
core   +1 more source

Nonlinear Analysis of Inflation’s Impact on Asset Markets (Stocks,Coin, Gold, Housing) Using a Time-Varying Parameter VAR (TVP-VAR) Model [PDF]

open access: yesIranian Journal of Economic Studies
Asset markets play a pivotal role in dynamic economies by facilitating resource allocation, preserving wealth value, and shaping expectations about the future. Their fluctuations can exert broad effects on investment behavior and economic growth.
Mohammad Jafari, Alireza Erfani
doaj   +1 more source

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

open access: yesFEBS 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

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