Results 101 to 110 of about 506,885 (307)

Avaliação da ingestão calórica e composição corporal de atletas de Futsal feminino do município de Guarapuava-Paraná

open access: yesRevista Brasileira de Futsal e Futebol, 2016
Considera-se o futsal um dos esportes mais praticados no Brasil, onde os atletas devem obter uma alimentação equilibrada com o fornecimento suficiente de energia e nutrientes.
Bruno Moreira Soares   +3 more
doaj  

Functional comparison of EncB and EncC cargo proteins in iron storage within the Myxococcus xanthus encapsulin

open access: yesFEBS Letters, EarlyView.
Encapsulins are protein nanocompartments that play an important role in iron storage. In the Myxococcus xanthus encapsulin system, two cargo proteins called EncB and EncC contribute to iron mineralization. Here, we show that EncB and EncC generate iron‐containing minerals with distinct chemical compositions, suggesting that the composition of stored ...
Harry B. McDowell   +2 more
wiley   +1 more source

Attitudes towards geroprotection: measuring willingness, from lifestyle changes to drug use

open access: yesFrontiers in Aging
IntroductionGeroprotection is an emerging field of research focused on devising strategies for combating the mechanisms of ageing. This study held three aims: 1) to explore the willingness to utilise five different geroprotective measures (i.e., exercise,
Sam J. Brouwers   +3 more
doaj   +1 more source

Structural and biochemical analysis of a B12 superbinder

open access: yesFEBS Letters, EarlyView.
BtuG proteins are vitamin B12 scavengers in Bacteroides thetaiotaomicron, a dominant human gut bacterium. We present crystal structures of three BtuG homologs bound to cobalamin and its precursor cobinamide, revealing picomolar binding affinities, among the highest known for any natural protein.
Jose M. Martinez Felices   +3 more
wiley   +1 more source

Structures of mycobacterial 3‐methylcrotonyl‐CoA carboxylase reveal carrier‐domain translocation between catalytic sites

open access: yesFEBS Letters, EarlyView.
Mycobacterial 3‐methylcrotonyl‐CoA carboxylase uses a mobile biotin‐carrying domain to shuttle a carboxyl group between two catalytic sites, enabling carboxylation of 3‐methylcrotonyl‐CoA during leucine breakdown. Cryo‐electron microscopy captures the carrier at both sites and reveals an inward loop movement that may prevent futile rebinding to the ...
Ajit Yadav   +2 more
wiley   +1 more source

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

Teens using muscle building supplements risking health.

open access: yes, 2013
Teenage rugby players using supplements to bulk up are putting their health at risk, the IRFU has ...
Ó Fátharta, Conall
core  

Caffeine, but not paracetamol (acetaminophen), enhances muscular endurance, strength, and power

open access: yesJournal of the International Society of Sports Nutrition
Background Caffeine is one of the most popular ergogenic aids consumed by athletes. Caffeine’s ergogenic effect has been generally explained by its ability to bind to adenosine receptors, thus modulating pain and reducing perceived exertion.
Bela Scapec   +3 more
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

Do calcium supplements increase the risk of cardiovascular events? [PDF]

open access: yes, 2013
AssessMadam Chan, a 65-year-old retired staff nurse, walks into my clinic and asks for a refill of her prescription of losartan 50 mg daily and calcium carbonate 1200 mg daily. Her blood pressure is well controlled at 130/80 and she feels well otherwise.
Ng CJ, Liew SM
core  

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