Results 91 to 100 of about 1,254,897 (274)

Profilin and formin constitute a pacemaker system for robust actin filament growth

open access: yeseLife, 2019
The actin cytoskeleton drives many essential biological processes, from cell morphogenesis to motility. Assembly of functional actin networks requires control over the speed at which actin filaments grow. How this can be achieved at the high and variable
Johanna Funk   +8 more
doaj   +1 more source

Multidimensional OMICs reveal ARID1A orchestrated control of DNA damage, splicing, and cell cycle in normal‐like and malignant urothelial cells

open access: yesMolecular Oncology, EarlyView.
Loss of the frequently mutated chromatin remodeler ARID1A, a subunit of the SWI/SNF cBAF complex, results in less open chromatin, alternative splicing, and the failure to stop cells from progressing through the cell cycle after DNA damage in bladder (cancer) cells. Created in BioRender. Epigenetic regulators, such as the SWI/SNF complex, with important
Rebecca M. Schlösser   +11 more
wiley   +1 more source

Efficiency of DNA replication in the Polymerase Chain Reactio [PDF]

open access: yesProceedings of the National Academy of Sciences Volume 93, Number 23; Pages 12947-12952, November 12, 1996, 2001
We present a detailed kinetic model for the Polymerase Chain Reaction, and model the probability of replication in terms of the physical parameters of the problem. Applying the theory of branching processes, we show the existance of a new phenomenon affecting the probability distribution function of the number of replicants: for small number of initial
arxiv  

A reverse transcriptase ribozyme

open access: yeseLife, 2017
A highly evolved RNA polymerase ribozyme was found to also be capable of functioning as a reverse transcriptase, an activity that has never been demonstrated before for RNA. This activity is thought to have been crucial for the transition from RNA to DNA
Biswajit Samanta, Gerald F Joyce
doaj   +1 more source

Germline variants in CDKN2A wild‐type melanoma prone families

open access: yesMolecular Oncology, EarlyView.
Among melanoma‐prone families, wild‐type for CDKN2A and CDK4, some have pathogenic variants in genes not usually linked to melanoma. Furthermore, rare XP‐related variants and variants in MC1R are enriched in such families. Germline pathogenic variants in CDKN2A are well established as an underlying cause of familial malignant melanoma. While pathogenic
Gjertrud T. Iversen   +5 more
wiley   +1 more source

Transcriptional Regulation by the Numbers 1: Models [PDF]

open access: yesarXiv, 2004
The study of gene regulation and expression is often discussed in quantitative terms. In particular, the expression of genes is regularly characterized with respect to how much, how fast, when and where. Whether discussing the level of gene expression in a bacterium or its precise location within a developing embryo, the natural language for these ...
arxiv  

Effects of cations on DNA-dependent RNA polymerase. [PDF]

open access: green, 1967
Antero G. So   +3 more
openalex   +1 more source

Escape from TGF‐β‐induced senescence promotes aggressive hallmarks in epithelial hepatocellular carcinoma cells

open access: yesMolecular Oncology, EarlyView.
Chronic TGF‐β exposure drives epithelial HCC cells from a senescent state to a TGF‐β resistant mesenchymal phenotype. This transition is characterized by the loss of Smad3‐mediated signaling, escape from senescence, enhanced invasiveness and metastatic potential, and upregulation of key resistance modulators such as MARK1 and GRM8, ultimately promoting
Minenur Kalyoncu   +11 more
wiley   +1 more source

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