Results 71 to 80 of about 161,501 (364)

Kinetic approaches to lactose operon induction and bimodality [PDF]

open access: yesJournal of Theoretical Biology 2013;325:62-75, 2013
The quasi-equilibrium approximation is acceptable when molecular interactions are fast enough compared to circuit dynamics, but is no longer allowed when cellular activities are governed by rare events. A typical example is the lactose operon (lac), one of the most famous paradigms of transcription regulation, for which several theories still coexist ...
arxiv   +1 more source

Biosynthesis of milk fat, protein, and lactose: roles of transcriptional and posttranscriptional regulation.

open access: yesPhysiological Genomics, 2016
The demand for high-quality milk is increasing worldwide. The efficiency of milk synthesis can be improved by taking advantage of the accumulated knowledge of the transcriptional and posttranscriptional regulation of genes coding for proteins involved in
J. Osorio, J. Lohakare, M. Bionaz
semanticscholar   +1 more source

Terahertz Metamaterial Sensors: Design Theory, Optimization Approach, and Advancements in Biosensing Applications

open access: yesAdvanced Materials Technologies, EarlyView.
This review provides an in‐depth overview of the design principles and optimization strategies for terahertz (THz) metamaterials (MMs) sensors based on the dielectric perturbation theory. Various structures and methods are explored to enhance sensor performance, focusing on improving sensitivity and Q‐factor.
Lei Cao   +9 more
wiley   +1 more source

Extrinsic noise passing through a Michaelis-Menten reaction: A universal response of a genetic switch [PDF]

open access: yes, 2009
The study of biochemical pathways usually focuses on a small section of a protein interactions network. Two distinct sources contribute to the noise in such a system: intrinsic noise, inherent in the studied reactions, and extrinsic noise generated in other parts of the network or in the environment.
arxiv   +1 more source

Exploring conformational energy landscape of glassy disaccharides by CPMAS 13C NMR and DFT/GIAO simulations. II. Enhanced molecular flexibility in amorphous trehalose [PDF]

open access: yesJournal of Chemical Physics 126 (07/01/2007) 014510, 2006
This paper deals with the comparative use of the chemical shift surfaces to simulate experimental 13C CPMAS data on amorphous solid state disaccharides, paying particular attention to -1-1 linkage of trehalose, to -1,4 linkage between pyranose rings (lactose) and to linkage implying a furanose ring (sucrose).
arxiv   +1 more source

Genetic associations of lactose and its ratios to other milk solids with health traits in Austrian Fleckvieh cows.

open access: yesJournal of Dairy Science, 2019
The genetic correlations (ra) of milk lactose percentage (LP), lactose yield (LY), and ratios of LP to other milk solids with udder, metabolic, and fertility disorders have not been assessed in dairy cattle so far.
A. Costa   +6 more
semanticscholar   +1 more source

Mechanisms of Baicalin Alleviates Intestinal Inflammation: Role of M1 Macrophage Polarization and Lactobacillus amylovorus

open access: yesAdvanced Science, EarlyView.
Baicalin alleviates E. coli‐induced intestinal inflammation through dual mechanisms: direct inhibition of the TLR4/IRF/STAT signaling pathway to modulate macrophage polarization and antigen presentation, thereby regulating Th17/Treg cell differentiation; and microbiota‐mediated indirect effects via increasing Lactobacillus amylovorus abundance and ...
Shunfen Zhang   +10 more
wiley   +1 more source

GLUT1 and lactose synthetase are critical genes for lactose synthesis in lactating sows

open access: yesNutrition & Metabolism, 2018
Background Lactose synthesis rate is an important factor in milk production and quality in mammals. Understanding the lactose synthesis mechanism is crucial for the improvement of milk quantity and quality.
Yinzhi Zhang   +6 more
doaj   +1 more source

Impact of short-chain galactooligosaccharides on the gut microbiome of lactose-intolerant individuals

open access: yesProceedings of the National Academy of Sciences of the United States of America, 2016
Significance Approximately 75% of the global human population are lactose malabsorbers. In a previous clinical trial, it was shown that feeding a high-purity galactooligosaccharide (>95% GOS) could improve symptoms of lactose-intolerant subjects ...
M. A. Azcarate-Peril   +6 more
semanticscholar   +1 more source

Avaliação da composição e do perfil de ácidos graxos do leite de vaca cru e pasteurizado em minilaticínios - DOI: 10.4025/actascianimsci.v25i2.2019

open access: yesActa Scientiarum: Animal Sciences, 2008
Este trabalho teve como objetivo a avaliação da composição e do perfil de ácidos graxos do leite de vaca, antes e após o processo industrial de pasteurização rápida, conduzido em quatro minilaticínios das regiões de Maringá e de Londrina, Estado do ...
Lucimar Gonçalves de Souza   +6 more
doaj   +1 more source

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