Results 61 to 70 of about 8,018,700 (214)

Longevidade pós-colheita de inflorescências de girassol afetada por nitrato de prata e sacarose. [PDF]

open access: yes, 2001
O objetivo deste trabalho foi avaliar a longevidade pós-colheita de inflorescências de girassol pelo uso de sacarose (4 e 10%) ou associadas ao nitrato de prata (10 e 20 mgL-1), e testemunha (água deionizada). Os tratamentos, com três repetições cada um,
Flavia Lonardoni   +3 more
core   +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

Chiral separation of chloroalkanes with the chromatographic column onboard Martian rovers

open access: yesFEBS Letters, EarlyView.
Computer image of the Rosalind Franklin Rover of ESA's ExoMars mission. ExoMars is scheduled to land on planet Mars in Oxia Planum in 2029. This area represents an interesting spot to look for biosignatures. Investigations of ExoMars include measurement on molecular chirality. We show that chiral chloroalkanes, that have been identified on Mars, can be
Asma Merzougui   +4 more
wiley   +1 more source

Longevidade de sementes condicionadas de tomate: estudos fisiológicos e moleculares

open access: yes, 2018
Pós-graduação em Agronomia (Agricultura) - FCAO Priming é uma tecnologia utilizada para aprimorar a qualidade fisiológica de sementes. Todavia, a técnica reduz a longevidade das sementes.
Batista, Thiago Barbosa
core  

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

A influência dos antioxidantes na longevidade [PDF]

open access: yes
O envelhecimento é um processo fisiológico caracterizado por diversas alterações metabólicas, muitas delas devido ao acúmulo de radicais livres provenientes do estresse oxidativo e dos processos inflamatórios acumulados durante a vida. A nutrição ótima é
Carvalho, Maria das Graças Freitas de   +1 more
core   +1 more source

The heterodimeric amino acid transporters (HAT) of the SLC7/SLC3 family: A structure−function relationships and relevance to human pathology

open access: yesFEBS Letters, EarlyView.
Heterodimeric amino acid transporters consist of SLC7 and SLC3 family proteins arranged in a conserved structural organization. They regulate nutrient transport across cell membranes, supporting essential cellular functions. These transporters also contribute to xenobiotic/drug uptake and distribution.
Mariafrancesca Scalise   +5 more
wiley   +1 more source

Os padrões comportamentais que influenciam na longevidade da empresa familiar [PDF]

open access: yes, 2014
O presente trabalho inserido no âmbito das empresas familiares, tema notadamente preponderante em nossa realidade socioeconômica, tendo como objetivo analisar os padrões comportamentais que influenciam na longevidade da empresa familiar.
Tonial, Renan Bonamigo   +3 more
core   +1 more source

Metastatic niche shaped by host factors influences disseminated cancer cell fate

open access: yesFEBS Letters, EarlyView.
Metastasis is shaped not only by cancer cells but also by the environments they encounter. This review explores how factors such as aging, diet, the microbiome, lifestyle, and environmental exposures remodel organ‐specific niches in the lung, liver, bone, and brain, influencing where metastatic cells survive, remain dormant, or grow, and ultimately ...
Gwennan Delyth Ward   +2 more
wiley   +1 more source

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