Results 31 to 40 of about 2,855,271 (302)

Extensive loss of Wnt genes in Tardigrada [PDF]

open access: yesBMC Ecology and Evolution, 2021
AbstractBackgroundWnt genes code for ligands that activate signaling pathways during development in Metazoa. Through the canonical Wnt (cWnt) signaling pathway, these genes regulate important processes in bilaterian development, such as establishing the anteroposterior axis and posterior growth. In Arthropoda, Wnt ligands also regulate segment polarity,
Chavarria, Raul A.   +5 more
openaire   +4 more sources

Gene Loss and Horizontal Gene Transfer Contributed to the Genome Evolution of the Extreme Acidophile “Ferrovum” [PDF]

open access: yes, 2016
Indexación: Web of Science. Scopus.Acid mine drainage (AMD), associated with active and abandoned mining sites, is a habitat for acidophilic microorganisms that gain energy from the oxidation of reduced sulfur compounds and ferrous iron and that thrive ...
Daniel, Rolf   +7 more
core   +2 more sources

Dynamic Evolution of Avian RNA Virus Sensors: Repeated Loss of RIG-I and RIPLET

open access: yesViruses, 2022
Retinoic acid-inducible gene I (RIG-I) and melanoma differentiation-associated protein 5 (MDA5) are key RNA virus sensors belonging to the RIG-I-like receptor (RLR) family.
Veronika Krchlíková   +7 more
doaj   +1 more source

RNA interference in marine and freshwater sponges [PDF]

open access: yes, 2011
Background: The marine sponge Tethya wilhelma and the freshwater sponge Ephydatia muelleri are emerging model organisms to study evolution, gene regulation, development, and physiology in non-bilaterian animal systems. Thus far, functional methods (i.e.,
Cieniewicz, Brandon   +12 more
core   +1 more source

Regulatory gene function handoff allows essential gene loss in mosquitoes [PDF]

open access: yesCommunications Biology, 2020
AbstractRegulatory genes are often multifunctional and constrained, which results in evolutionary conservation. It is difficult to understand how a regulatory gene could be lost from one species’ genome when it is essential for viability in closely related species.
Alys M. Cheatle Jarvela   +2 more
openaire   +2 more sources

The Vertebrate TLR Supergene Family Evolved Dynamically by Gene Gain/Loss and Positive Selection Revealing a Host–Pathogen Arms Race in Birds

open access: yesDiversity, 2019
The vertebrate toll-like receptor (TLRs) supergene family is a first-line immune defense against viral and non-viral pathogens. Here, comparative evolutionary-genomics of 79 vertebrate species (8 mammals, 48 birds, 11 reptiles, 1 amphibian, and 11 fishes)
Imran Khan   +9 more
doaj   +1 more source

The Expansion of Animal MicroRNA Families Revisited

open access: yesLife, 2015
MicroRNAs are important regulatory small RNAs in many eukaryotes. Due to their small size and simple structure, they are readily innovated de novo. Throughout the evolution of animals, the emergence of novel microRNA families traces key morphological ...
Jana Hertel, Peter F. Stadler
doaj   +1 more source

Comparative Genomic and Phylogenetic Analysis of Forty Gentiana Chloroplast Genomes

open access: yesFrontiers in Bioscience-Landmark, 2022
Background: Gentiana plants, which have great medicinal and ornamental value, are widely distributed in diverse habitats and have complex taxonomy.
Gang Deng   +7 more
doaj   +1 more source

The pio Operon Is Essential for Phototrophic Fe(II) Oxidation in Rhodopseudomonas palustris TIE-1 [PDF]

open access: yes, 2006
Phototrophic Fe(II)-oxidizing bacteria couple the oxidation of ferrous iron [Fe(II)] to reductive CO2 fixation by using light energy, but until recently, little has been understood about the molecular basis for this process. Here we report the discovery,
Jiao, Yongqin, Newman, Dianne K.
core   +4 more sources

Plastome phylogeny and lineage diversification of Salicaceae with focus on poplars and willows

open access: yesEcology and Evolution, 2018
Phylogenetic relationships and lineage diversification of the family Salicaceae sensu lato (s.l.) remain poorly understood. In this study, we examined phylogenetic relationships between 42 species from six genera based on the complete plastomes ...
Lei Zhang   +4 more
doaj   +1 more source

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