Results 21 to 30 of about 2,855,271 (302)

The Mercury Resistance Operon: From an Origin in a Geothermal Environment to an Efficient Detoxification Machine

open access: yesFrontiers in Microbiology, 2012
Mercuric mercury (Hg[II]) is a highly toxic and mobile element that is likely to have had a pronounced and adverse effect on biology since Earth’s oxygenation ~2.4 Gy ago due to its high affinity for protein sulfhydryl groups, which upon binding ...
Eric eBoyd, Tamar eBarkay
doaj   +1 more source

Transit From Autotrophism to Heterotrophism: Sequence Variation and Evolution of Chloroplast Genomes in Orobanchaceae Species

open access: yesFrontiers in Genetics, 2020
The family Orobanchaceae including autotrophic, hemiparasitic, and holoparasitic species, is becoming a key taxa to study the evolution of chloroplast genomes in different lifestyles. But the early evolutionary trajectory in the transit from autotrophism
Ruiting Zhang   +8 more
doaj   +1 more source

The Complete Plastomes of Five Hemiparasitic Plants (Osyris wightiana, Pyrularia edulis, Santalum album, Viscum liquidambaricolum, and V. ovalifolium): Comparative and Evolutionary Analyses Within Santalales

open access: yesFrontiers in Genetics, 2020
Most species of Santalales (the sandalwood order) are hemiparasites, including both facultative and obligate hemiparasites. Despite its rich diversity, only a small fraction of the species in the sandalwood order have sequenced plastomes.
Xiaorong Guo   +8 more
doaj   +1 more source

Parallel Losses of Blue Opsin Correlate with Compensatory Neofunctionalization of UV-Opsin Gene Duplicates in Aphids and Planthoppers

open access: yesInsects, 2023
Expanding on previous efforts to survey the visual opsin repertoires of the Hemiptera, this study confirms that homologs of the UV- and LW-opsin subfamilies are conserved in all Hemiptera, while the B-opsin subfamily is missing from the Heteroptera and ...
Markus Friedrich
doaj   +1 more source

Gene Losses during Human Origins

open access: yesPLoS Biology, 2006
Pseudogenization is a widespread phenomenon in genome evolution, and it has been proposed to serve as an engine of evolutionary change, especially during human origins (the "less-is-more" hypothesis). However, there has been no comprehensive analysis of human-specific pseudogenes.
Xiaoxia Wang   +2 more
openaire   +4 more sources

Antivirulence Genes: Insights into Pathogen Evolution through Gene Loss [PDF]

open access: yesInfection and Immunity, 2012
ABSTRACT The emergence of new pathogens and the exploitation of novel pathogenic niches by bacteria typically require the horizontal transfer of virulence factors and subsequent adaptation—a “fine-tuning” process—for the successful incorporation of these factors into the microbe's genome.
Kimberly A, Bliven, Anthony T, Maurelli
openaire   +2 more sources

Missense mutations in the perforin (PRF1) gene as a cause of hereditary cancer predisposition [PDF]

open access: yes, 2016
Perforin, a pore-forming toxin released from secretory granules of NK cells and CTLs, is essential for their cytotoxic activity against infected or cancerous target cells.
Chaudhry, MS   +7 more
core   +1 more source

Phylogenetic reconstruction with gene rearrangements and gene losses [PDF]

open access: yes2010 IEEE International Conference on Bioinformatics and Biomedicine (BIBM), 2010
Reconstructing phylogenies from gene-order data has become very attractive in the research of evolution these years. So far, most methods can only treat genomes with equal gene contents with each gene appearing exactly once in each genome. In this paper, we propose a new distance measurement for genomes with inversions and insertions/deletions that ...
Yiwei Zhang, Fei Hu, Jijun Tang
openaire   +1 more source

RB loss contributes to aggressive tumor phenotypes in MYC-driven triple negative breast cancer [PDF]

open access: yes, 2015
Triple negative breast cancer (TNBC) is characterized by multiple genetic events occurring in concert to drive pathogenic features of the disease. Here we interrogated the coordinate impact of p53, RB, and MYC in a genetic model of TNBC, in parallel with
Ertel, Adam   +5 more
core   +1 more source

Evolutionary Histories of Type III Polyketide Synthases in Fungi

open access: yesFrontiers in Microbiology, 2020
Type III polyketide synthases (PKSs) produce secondary metabolites with diverse biological activities, including antimicrobials. While they have been extensively studied in plants and bacteria, only a handful of type III PKSs from fungi has been ...
Jorge Carlos Navarro-Muñoz   +1 more
doaj   +1 more source

Home - About - Disclaimer - Privacy