Results 101 to 110 of about 2,209,460 (296)

The (Glg)ABCs of cyanobacteria: modelling of glycogen synthesis and functional divergence of glycogen synthases in Synechocystis sp. PCC 6803

open access: yesFEBS Letters, EarlyView.
We reconstituted Synechocystis glycogen synthesis in vitro from purified enzymes and showed that two GlgA isoenzymes produce glycogen with different architectures: GlgA1 yields denser, highly branched glycogen, whereas GlgA2 synthesizes longer, less‐branched chains.
Kenric Lee   +3 more
wiley   +1 more source

Nonlinear Evolution of Density Perturbations

open access: yes, 1993
: From the epoch of recombination $(z\approx 10^3)$ till today, the typical density contrasts have grown by a factor of about $10^6$ in a Friedmann universe with $Ω=1$. However, during the same epoch the typical gravitational potential has grown only by a factor of order unity.
Bagla, J. S., Padmanabhan, T.
openaire   +2 more sources

Structural biology of ferritin nanocages

open access: yesFEBS Letters, EarlyView.
Ferritin is a conserved iron‐storage protein that sequesters iron as a ferric mineral core within a nanocage, protecting cells from oxidative damage and maintaining iron homeostasis. This review discusses ferritin biology, structure, and function, and highlights recent cryo‐EM studies revealing mechanisms of ferritinophagy, cellular iron uptake, and ...
Eloise Mastrangelo, Flavio Di Pisa
wiley   +1 more source

Construction of Rate-Compatible LDPC Codes Utilizing Information Shortening and Parity Puncturing

open access: yesEURASIP Journal on Wireless Communications and Networking, 2005
This paper proposes a method for constructing rate-compatible low-density parity-check (LDPC) codes. The construction considers the problem of optimizing a family of rate-compatible degree distributions as well as the placement of bipartite graph edges.
Jones Christopher R, Tian Tao
doaj  

Organ‐specific redox imbalances in spinal muscular atrophy mice are partially rescued by SMN antisense oligonucleotides

open access: yesFEBS Letters, EarlyView.
We identified a systemic, progressive loss of protein S‐glutathionylation—detected by nonreducing western blotting—alongside dysregulation of glutathione‐cycle enzymes in both neuronal and peripheral tissues of Taiwanese SMA mice. These alterations were partially rescued by SMN antisense oligonucleotide therapy, revealing persistent redox imbalance as ...
Sofia Vrettou, Brunhilde Wirth
wiley   +1 more source

Does Clade Density Constrain Geographical Range Evolution?

open access: yesEcology and Evolution
The role of biotic interactions, such as interspecific competition, in driving geographical range evolution is still poorly understood. For instance, lineages distributed across regions with a large number of potential competitors might experience some ...
Marcio R. Pie   +2 more
doaj   +1 more source

The Effect of Saturation on Belief Propagation Decoding of LDPC Codes

open access: yes, 2014
We consider the effect of LLR saturation on belief propagation decoding of low-density parity-check codes. Saturation occurs universally in practice and is known to have a significant effect on error floor performance.
Iyengar, Aravind   +2 more
core   +1 more source

Transferrin receptor 1‐mediated iron uptake supports thermogenic activation in human cervical‐derived adipocytes

open access: yesFEBS Letters, EarlyView.
In this study, we found that human cervical‐derived adipocytes maintain intracellular iron level by regulating the expression of iron transport‐related proteins during adrenergic stimulation. Melanotransferrin is predicted to interact with transferrin receptor 1 based on in silico analysis.
Rahaf Alrifai   +9 more
wiley   +1 more source

A dislocation-based model for the substructure evolution and flow stress of aluminum alloys during high-temperature compression

open access: yesJournal of Materials Research and Technology
The microstructure evolution of aluminum alloys during plastic deformation is a complex metallurgical process controlled by interacting physical mechanisms, such as recovery, continuous dynamic recrystallization (CDRX), and substructure evolution.
Qi Yang, Tomasz Wojcik, Ernst Kozeschnik
doaj   +1 more source

Mean-field dynamical density functional theory

open access: yes, 2003
We examine the out-of-equilibrium dynamical evolution of density profiles of ultrasoft particles under time-varying external confining potentials in three spatial dimensions.
Allen M P   +10 more
core   +2 more sources

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