Results 61 to 70 of about 125,187 (158)

Glucose kinase-dependent catabolite repression in Staphylococcus xylosus.

open access: yes, 1995
International audienceBy transposon Tn917 mutagenesis, 16 mutants of Staphylococcus xylosus were isolated that showed higher levels of beta-galactosidase activity in the presence of glucose than the wild-type strain.
Deutscher, J.   +5 more
core   +3 more sources

Promoting the co-utilisation of glucose and xylose in lignocellulosic ethanol fermentations using a data-driven feed-back controller

open access: yesBiotechnology for Biofuels, 2020
Background The diauxic growth of Saccharomyces cerevisiae on glucose and xylose during cellulose-to-ethanol processes extends the duration of the fermentation and reduces productivity.
Pau Cabaneros Lopez   +5 more
doaj   +1 more source

Tissue‐Resident Macrophage in Inflammation and Cancer

open access: yesMedComm, Volume 7, Issue 9, September 2026.
Opposing macrophage functions in inflammation and cancer converge on shared mechanistic nodes, informing cross‐disease therapeutic strategies. ABSTRACT Tissue‐resident macrophages (TRMs) are long‐lived immune cells strategically distributed across organs, where their functional plasticity enables both homeostatic maintenance and pathological ...
Siyuan Huang   +13 more
wiley   +1 more source

Structure and conformational dynamics of the Pseudomonas CbrA transceptor

open access: yesProtein Science, Volume 35, Issue 9, September 2026.
Abstract The CbrA protein is a central regulator of carbon metabolism, biofilm formation, and virulence in Pseudomonas species, but the molecular mechanisms by which CbrA links nutrient sensing to downstream signaling has remained unclear. CbrA is a rare “transceptor” that combines membrane transporter and histidine kinase domains into a single ...
Melanie A. Orlando   +4 more
wiley   +1 more source

In silico evolution of diauxic growth [PDF]

open access: yes, 2015
The glucose effect is a well known phenomenon whereby cells, when presented with two different nutrients, show a diauxic growth pattern, i.e. an episode of exponential growth followed by a lag phase of reduced growth followed by a second phase of ...
Dominique F. Chu, Chu, Dominique
core   +1 more source

Proteostasis of organelles in aging and disease

open access: yesThe FEBS Journal, Volume 293, Issue 18, Page 5600-5626, September 2026.
Cells rely on regulated proteostasis mechanisms to keep their internal compartments functioning properly. When these mechanisms fail, damaged proteins accumulate, disrupting organelles, such as the nucleus, mitochondria, endoplasmic reticulum, Golgi, and lysosomes, as well as membraneless organelles, such as stress granules, processing bodies, the ...
Yara Nabawi   +5 more
wiley   +1 more source

A Single‐Nucleotide Substitution Generates a de Novo Promoter That Activates a Latent Metabolic Bypass in Escherichia coli

open access: yesMolecular Microbiology, Volume 126, Issue 3, Page 244-251, September 2026.
A chromosomal mutation allows bypass of deletion of the Escherichia coli fabH gene. The bypass results from creation of a new promoter that drives increased madA transcription, resulting in increased synthesis of acetyl‐acyl carrier protein by decarboxylation of malonyl‐acyl carrier protein.
Qiaoqiao Guo   +5 more
wiley   +1 more source

Catabolite repression in Streptomycin-dependent Escherichia coli

open access: yes, 1969
Biosynthetic reactions in micro-organisms normally are under precise control, usually by a feed-back mechanism in which the end product inhibits the activity and/or represses the formation of the enzyme which initiates the biosynthetic pathway ...
Coukell, Milton Barrie
core   +1 more source

Cell geometry and membrane protein crowding constrain Escherichia coli growth rate, overflow metabolism, respiration, and maintenance energy

open access: yesFEBS Letters, Volume 600, Issue 15, Page 2154-2174, August 2026.
The physical dimensions and shape of bacterial cells define the surface area available to acquire nutrients and the volume available for synthesizing proteins and DNA. Here, we use computational systems biology to decode the importance of cell geometry as a major determinant of prokaryotic phenotype, including growth rate and metabolic efficiency. This
Ross P. Carlson   +6 more
wiley   +1 more source

Selection of Trichoderma mutants with enhanced cellulase production and resistant to catabolite repression

open access: yes浙江大学学报. 农业与生命科学版, 2004
Due to high cost and relatively low efficiency of cellulase enzymes used for the saccharification of pretreated lignocelluloses, the improvement of cellulase secreting microorganisms is of vital importance.
Szakacs G, Megyeri L, Kovacs K, Zacchi G
doaj   +1 more source

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