Results 51 to 60 of about 9,839 (200)

Phenotype Switching and Mutations in Random Environments [PDF]

open access: yesBulletin of Mathematical Biology, 2011
Cell populations can benefit from changing phenotype when the environment changes. One mechanism for generating these changes is stochastic phenotype switching, whereby cells switch stochastically from one phenotype to another according to genetically determined rates, irrespective of the current environment, with the matching of phenotype to ...
Fudenberg, Drew, Imhof, LA
openaire   +5 more sources

Adapting the engine to the fuel: mutator populations can reduce the mutational load by reorganizing their genome structure

open access: yesBMC Evolutionary Biology, 2019
Background Mutators are common in bacterial populations, both in natural isolates and in the lab. The fate of these lineages, which mutation rate is increased up to 100 ×, has long been studied using population genetics models, showing that they can ...
Jacob Pieter Rutten   +2 more
doaj   +1 more source

Interplay between pleiotropy and secondary selection determines rise and fall of mutators in stress response. [PDF]

open access: yesPLoS Computational Biology, 2010
Mutators are clones whose mutation rate is about two to three orders of magnitude higher than the rate of wild-type clones and their roles in adaptive evolution of asexual populations have been controversial.
Muyoung Heo, Eugene I Shakhnovich
doaj   +1 more source

Genomic Instability-Related LncRNA Signature Predicts the Prognosis and Highlights LINC01614 Is a Tumor Microenvironment-Related Oncogenic lncRNA of Papillary Thyroid Carcinoma

open access: yesFrontiers in Oncology, 2021
BackgroundGenomic instability (GI) is among the top ten characteristics of malignancy. Long non-coding RNAs (lncRNAs) are promising cancer biomarkers that are reportedly involved in GI.
Xubin Dong   +14 more
doaj   +1 more source

Common themes in antimicrobial and anticancer drug resistance

open access: yesFrontiers in Microbiology, 2022
Antimicrobial and anticancer drug resistance represent two of the main global challenges for the public health, requiring immediate practical solutions.
Mariana Carmen Chifiriuc   +15 more
doaj   +1 more source

Directed evolution of enzymes at the crossroads of tradition and innovation

open access: yesFEBS Open Bio, EarlyView.
An iterative cycle of data‐driven enzyme optimization comprising four stages: genetic diversification of a template enzyme, expression of protein variants, high‐throughput evaluation, and machine‐learning‐guided redesign of the next variant library.
Maria Tomkova   +2 more
wiley   +1 more source

The Evolutionary Potential of Phenotypic Mutations

open access: yesPLOS Genetics, 2015
Errors in protein synthesis, so-called phenotypic mutations, are orders-of-magnitude more frequent than genetic mutations. Here, we provide direct evidence that alternative protein forms and phenotypic variability derived from translational errors paved the path to genetic, evolutionary adaptations via gene duplication.
Hayato Yanagida   +6 more
openaire   +4 more sources

A non-sense mutation in the putative anti-mutator gene ada/alkA of Mycobacterium tuberculosis and M. bovis isolates suggests convergent evolution [PDF]

open access: yes, 2007
Background: Previous studies have suggested that variations in DNA repair genes of W-Beijing strains may have led to transient mutator phenotypes which in turn may have contributed to host adaptation of this strain family. Single nucleotide polymorphism (
Nouvel Laurent X   +14 more
core   +1 more source

RecB-dependent mutator phenotype in Neisseria meningitidis strains naturally defective in mismatch repair

open access: yes, 2006
Several invasive serogroup B meningococcal strains phylogenetically related to the lineage III (ET-24) exhibited a mutator phenotype as shown by mutagenicity assay using rifampicin-resistance as a selection marker.
BRUNI C. B   +8 more
core   +2 more sources

Systemic aging fuels heart failure: Molecular mechanisms and therapeutic avenues

open access: yesESC Heart Failure, Volume 12, Issue 2, Page 1059-1080, April 2025.
Abstract Systemic aging influences various physiological processes and contributes to structural and functional decline in cardiac tissue. These alterations include an increased incidence of left ventricular hypertrophy, a decline in left ventricular diastolic function, left atrial dilation, atrial fibrillation, myocardial fibrosis and cardiac ...
Zhuyubing Fang   +7 more
wiley   +1 more source

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