Results 61 to 70 of about 8,622 (220)

Measuring microsatellite conservation in mammalian evolution with a phylogenetic birth-death model. [PDF]

open access: yes, 2012
Microsatellites make up ∼3% of the human genome, and there is increasing evidence that some microsatellites can have important functions and can be conserved by selection.
Buschiazzo, Emmanuel   +4 more
core   +1 more source

Common Signatures of Altered Gene Regulation and Invasiveness of Different Breast Cancer Cell Lines after Matrix Interface Crossing

open access: yesAdvanced Healthcare Materials, EarlyView.
Interface transmigration reprograms triple‐negative breast cancer cells, triggering a shared switch toward more aggressive and invasive phenotypes. Using a collagen I interface model, this study identifies shared transcriptional changes involving proliferation, chromatin remodeling, and DNA repair pathways.
Cornelia Clemens   +3 more
wiley   +1 more source

Unprecedented loss of ammonia assimilation capability in a urease-encoding bacterial mutualist

open access: yesBMC Genomics, 2010
Background Blochmannia are obligately intracellular bacterial mutualists of ants of the tribe Camponotini. Blochmannia perform key nutritional functions for the host, including synthesis of several essential amino acids.
Wernegreen Jennifer J, Williams Laura E
doaj   +1 more source

Template-directed biopolymerization: tape-copying Turing machines

open access: yes, 2012
DNA, RNA and proteins are among the most important macromolecules in a living cell. These molecules are polymerized by molecular machines. These natural nano-machines polymerize such macromolecules, adding one monomer at a time, using another linear ...
Chowdhury, Debashish, Sharma, Ajeet K.
core   +1 more source

Microengineered Gradient Hydrogels for Mechanobiology

open access: yesAdvanced Healthcare Materials, EarlyView.
Gradient hydrogels are used to mimic the mechanical heterogeneity in native tissues, offering powerful in vitro platforms to study cell‐material interactions in diverse pathophysiological contexts. Here, we present a comprehensive review of the design and experimental considerations for stiffness gradient hydrogels, discussing exemplary achievements ...
Shin Wei Chong   +4 more
wiley   +1 more source

Identification of the nature of reading frame transitions observed in prokaryotic genomes [PDF]

open access: yes, 2013
Our goal was to identify evolutionary conserved frame transitions in protein coding regions and to uncover an underlying functional role of these structural aberrations.
Antonov, Ivan   +4 more
core   +1 more source

Assembling a True “Olympic Gel” From over 16 000 Combinatorial DNA Rings

open access: yesAdvanced Materials, EarlyView.
Olympic gels are an elusive class of soft matter, consisting of molecular networks held together purely by mechanically interlocked rings. Their topological structure promises unique properties and functions, but their synthesis has proven notoriously difficult.
Sarah K. Speed   +9 more
wiley   +1 more source

Cyclical adaptation of measles virus quasispecies to epithelial and lymphocytic cells: To V, or not to V.

open access: yesPLoS Pathogens, 2019
Measles virus (MeV) is dual-tropic: it replicates first in lymphatic tissues and then in epithelial cells. This switch in tropism raises the question of whether, and how, intra-host evolution occurs.
Ryan C Donohue   +2 more
doaj   +1 more source

Law of Genome Evolution Direction : Coding Information Quantity Grows

open access: yes, 2008
The problem of the directionality of genome evolution is studied. Based on the analysis of C-value paradox and the evolution of genome size we propose that the function-coding information quantity of a genome always grows in the course of evolution ...
A. F. A. Smit   +44 more
core   +1 more source

Stressing Mitosis to Death [PDF]

open access: yes, 2014
The final stage of cell division (mitosis), involves the compaction of the duplicated genome into chromatid pairs. Each pair is captured by microtubules emanating from opposite spindle poles, aligned at the metaphase plate, and then faithfully segregated
Andrew Burgess   +2 more
core   +2 more sources

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