Abstract:
:Despite tremendous body form diversity in nature, bilaterian animals share common sets of developmental genes that display conserved expression patterns in the embryo. Among them are the Hox genes, which define different identities along the anterior-posterior axis. Hox proteins exert their function by interaction with TALE transcription factors. Hox and TALE members are also present in some but not all non-bilaterian phyla, raising the question of how Hox-TALE interactions evolved to provide positional information. By using proteins from unicellular and multicellular lineages, we showed that these networks emerged from an ancestral generic motif present in Hox and other related protein families. Interestingly, Hox-TALE networks experienced additional and extensive molecular innovations that were likely crucial for differentiating Hox functions along body plans. Together our results highlight how homeobox gene families evolved during eukaryote evolution to eventually constitute a major patterning system in Eumetazoans. DOI: http://dx.doi.org/10.7554/eLife.01939.001.
journal_name
Elifejournal_title
eLifeauthors
Hudry B,Thomas-Chollier M,Volovik Y,Duffraisse M,Dard A,Frank D,Technau U,Merabet Sdoi
10.7554/eLife.01939subject
Has Abstractpub_date
2014-03-18 00:00:00pages
e01939issn
2050-084Xjournal_volume
3pub_type
杂志文章相关文献
eLife文献大全abstract::Selective packaging of HIV-1 genomic RNA (gRNA) requires the presence of a cis-acting RNA element called the 'packaging signal' (Ψ). However, the mechanism by which Ψ promotes selective packaging of the gRNA is not well understood. We used fluorescence correlation spectroscopy and quenching data to monitor the binding...
journal_title:eLife
pub_type: 杂志文章
doi:10.7554/eLife.27055
更新日期:2017-07-20 00:00:00
abstract::Imaging sperm as they travel through the female reproductive tract has revealed new details about fertilization at the molecular level. ...
journal_title:eLife
pub_type: 评论,杂志文章
doi:10.7554/eLife.64379
更新日期:2020-12-02 00:00:00
abstract::Genome-wide association analyses have uncovered multiple genomic regions associated with T2D, but identification of the causal variants at these remains a challenge. There is growing interest in the potential of deep learning models - which predict epigenome features from DNA sequence - to support inference concerning...
journal_title:eLife
pub_type: 杂志文章
doi:10.7554/eLife.51503
更新日期:2020-01-27 00:00:00
abstract::A protein called P36 holds the key to how different species of malaria parasite invade liver cells. ...
journal_title:eLife
pub_type: 评论,杂志文章
doi:10.7554/eLife.28600
更新日期:2017-06-14 00:00:00
abstract::Lissencephaly ('smooth brain') is a severe brain disease associated with numerous symptoms, including cognitive impairment, and shortened lifespan. The main causative gene of this disease - lissencephaly-1 (LIS1) - has been a focus of intense scrutiny since its first identification almost 30 years ago. LIS1 is a criti...
journal_title:eLife
pub_type: 杂志文章
doi:10.7554/eLife.59737
更新日期:2020-07-21 00:00:00
abstract::Peroxiredoxins are H2O2 scavenging enzymes that also carry out H2O2 signaling and chaperone functions. In yeast, the major cytosolic peroxiredoxin, Tsa1 is required for both promoting resistance to H2O2 and extending lifespan upon caloric restriction. We show here that Tsa1 effects both these functions not by scavengi...
journal_title:eLife
pub_type: 杂志文章
doi:10.7554/eLife.60346
更新日期:2020-07-14 00:00:00
abstract::Visual perception and imagery rely on similar representations in the visual cortex. During perception, visual activity is characterized by distinct processing stages, but the temporal dynamics underlying imagery remain unclear. Here, we investigated the dynamics of visual imagery in human participants using magnetoenc...
journal_title:eLife
pub_type: 杂志文章
doi:10.7554/eLife.33904
更新日期:2018-05-29 00:00:00
abstract::Understanding genome to phenotype linkages has been greatly enabled by genomic sequencing. However, most genome analysis is typically confined to the nuclear genome. We conducted a metabolomic QTL analysis on a reciprocal RIL population structured to examine how variation in the organelle genomes affects phenotypic va...
journal_title:eLife
pub_type: 杂志文章
doi:10.7554/eLife.00776
更新日期:2013-10-08 00:00:00
abstract::Dorsal/ventral (DV) patterning of the sea urchin embryo relies on a ventrally-localized organizer expressing Nodal, a pivotal regulator of the DV gene regulatory network. However, the inceptive mechanisms imposing the symmetry-breaking are incompletely understood. In Paracentrotus lividus, the Hbox12 homeodomain-conta...
journal_title:eLife
pub_type: 杂志文章
doi:10.7554/eLife.04664
更新日期:2014-12-02 00:00:00
abstract::Selective autophagy is mediated by cargo receptors that link the cargo to the isolation membrane via interactions with Atg8 proteins. Atg8 proteins are localized to the membrane in an ubiquitin-like conjugation reaction, but how this conjugation is coupled to the presence of the cargo is unclear. Here we show that the...
journal_title:eLife
pub_type: 杂志文章
doi:10.7554/eLife.18544
更新日期:2016-11-23 00:00:00
abstract::The cellular architecture of the ventral tegmental area (VTA), the main hub of the brain reward system, remains only partially characterized. To extend the characterization to inhibitory neurons, we have identified three distinct subtypes of somatostatin (Sst)-expressing neurons in the mouse VTA. These neurons differ ...
journal_title:eLife
pub_type: 杂志文章
doi:10.7554/eLife.59328
更新日期:2020-08-04 00:00:00
abstract::Embryonic polarity of invertebrates, amphibians and fish is specified largely by maternal determinants, which fixes cell fates early in development. In contrast, amniote embryos remain plastic and can form multiple individuals until gastrulation. How is their polarity determined? In the chick embryo, the earliest know...
journal_title:eLife
pub_type: 杂志文章
doi:10.7554/eLife.03743
更新日期:2014-12-11 00:00:00
abstract::During embryogenesis, chromatin accessibility profiles control lineage-specific gene expression by modulating transcription, thus impacting multipotent progenitor states and subsequent fate choices. Subsets of cardiac and pharyngeal/head muscles share a common origin in the cardiopharyngeal mesoderm, but the chromatin...
journal_title:eLife
pub_type: 杂志文章
doi:10.7554/eLife.49921
更新日期:2019-11-20 00:00:00
abstract::In most vertebrate neurons, action potentials are triggered at the distal end of the axon initial segment (AIS). Both position and length of the AIS vary across and within neuron types, with activity, development and pathology. What is the impact of AIS geometry on excitability? Direct empirical assessment has proven ...
journal_title:eLife
pub_type: 杂志文章
doi:10.7554/eLife.53432
更新日期:2020-03-30 00:00:00
abstract::We studied the role of the synaptic ribbon for sound encoding at the synapses between inner hair cells (IHCs) and spiral ganglion neurons (SGNs) in mice lacking RIBEYE (RBEKO/KO). Electron and immunofluorescence microscopy revealed a lack of synaptic ribbons and an assembly of several small active zones (AZs) at each ...
journal_title:eLife
pub_type: 杂志文章
doi:10.7554/eLife.29275
更新日期:2018-01-12 00:00:00
abstract::The mechanisms generating epileptic neuronal networks following insults such as severe seizures are unknown. We have previously shown that interfering with the function of the neuron-restrictive silencer factor (NRSF/REST), an important transcription factor that influences neuronal phenotype, attenuated development of...
journal_title:eLife
pub_type: 杂志文章
doi:10.7554/eLife.01267
更新日期:2014-08-12 00:00:00
abstract::Tissue mechanics is important for development; however, the spatio-temporal dynamics of in vivo tissue stiffness is still poorly understood. We here developed tiv-AFM, combining time-lapse in vivo atomic force microscopy with upright fluorescence imaging of embryonic tissue, to show that during development local tissu...
journal_title:eLife
pub_type: 杂志文章
doi:10.7554/eLife.39356
更新日期:2019-01-15 00:00:00
abstract::Pathological metabolic conditions such as ischemia induce the rupture of the mitochondrial envelope and the release of pro-apoptotic proteins, leading to cell death. At the onset of this process, the inner mitochondrial membrane becomes depolarized and permeable to osmolytes, proposedly due to the opening of a non-sel...
journal_title:eLife
pub_type: 杂志文章
doi:10.7554/eLife.23781
更新日期:2017-02-10 00:00:00
abstract::How mammalian tissues maintain their architecture and tissue-specificity is poorly understood. Previously, we documented both the indispensable role of the extracellular matrix (ECM) protein, laminin-111 (LN1), in the formation of normal breast acini, and the phenotypic reversion of cancer cells to acini-like structur...
journal_title:eLife
pub_type: 杂志文章
doi:10.7554/eLife.26148
更新日期:2018-03-21 00:00:00
abstract::When a human catches a ball, they estimate future target location based on the current trajectory. How animals, small and large, encode such predictive processes at the single neuron level is unknown. Here we describe small target-selective neurons in predatory dragonflies that exhibit localized enhanced sensitivity f...
journal_title:eLife
pub_type: 杂志文章
doi:10.7554/eLife.26478
更新日期:2017-07-25 00:00:00
abstract::Probabilistic models of adaptive immune repertoire sequence distributions can be used to infer the expansion of immune cells in response to stimulus, differentiate genetic from environmental factors that determine repertoire sharing, and evaluate the suitability of various target immune sequences for stimulation via v...
journal_title:eLife
pub_type: 杂志文章
doi:10.7554/eLife.46935
更新日期:2019-09-05 00:00:00
abstract::Polarity is a shared feature of most cells. In epithelia, apical-basal polarity often coexists, and sometimes intersects with planar cell polarity (PCP), which orients cells in the epithelial plane. From a limited set of core building blocks (e.g. the Par complexes for apical-basal polarity and the Frizzled/Dishevelle...
journal_title:eLife
pub_type: 杂志文章
doi:10.7554/eLife.25014
更新日期:2017-06-30 00:00:00
abstract::Experiments in which monkeys have to select or estimate the location of a target are revealing more about the role of the dorsal premotor cortex in decision making. ...
journal_title:eLife
pub_type: 评论,杂志文章
doi:10.7554/eLife.18721
更新日期:2016-07-15 00:00:00
abstract::MicroRNAs (miRNAs) exert a broad influence over gene expression by directing effector activities that impinge on translation and stability of mRNAs. We recently discovered that the cap-binding protein 4EHP is a key component of the mammalian miRNA-Induced Silencing Complex (miRISC), which mediates gene silencing. Howe...
journal_title:eLife
pub_type: 杂志文章
doi:10.7554/eLife.35034
更新日期:2018-02-07 00:00:00
abstract::The unfolded protein response (UPR) adjusts the cell's protein folding capacity in the endoplasmic reticulum (ER) according to need. IRE1 is the most conserved UPR sensor in eukaryotic cells. It has remained controversial, however, whether mammalian and yeast IRE1 use a common mechanism for ER stress sensing. Here, we...
journal_title:eLife
pub_type: 杂志文章
doi:10.7554/eLife.30700
更新日期:2017-10-03 00:00:00
abstract::Bacterial cells are encased in a peptidoglycan (PG) exoskeleton that protects them from osmotic lysis and specifies their distinct shapes. Cell wall hydrolases are required to enlarge this covalently closed macromolecule during growth, but how these autolytic enzymes are regulated remains poorly understood. Bacillus s...
journal_title:eLife
pub_type: 杂志文章
doi:10.7554/eLife.52088
更新日期:2019-12-06 00:00:00
abstract::The neural correlates of consciousness are typically sought by comparing the overall brain responses to perceived and unperceived stimuli. However, this comparison may be contaminated by non-specific attention, alerting, performance, and reporting confounds. Here, we pursue a novel approach, tracking the neuronal codi...
journal_title:eLife
pub_type: 杂志文章
doi:10.7554/eLife.05652
更新日期:2015-05-21 00:00:00
abstract::Rhythmic actions benefit from synchronization with external events. Auditory-paced finger tapping studies indicate the two cerebral hemispheres preferentially control different rhythms. It is unclear whether left-lateralized processing of faster rhythms and right-lateralized processing of slower rhythms bases upon hem...
journal_title:eLife
pub_type: 杂志文章
doi:10.7554/eLife.48404
更新日期:2019-11-07 00:00:00
abstract::Transposable elements (TEs), the movement of which can damage the genome, are epigenetically silenced in eukaryotes. Intriguingly, TEs are activated in the sperm companion cell - vegetative cell (VC) - of the flowering plant Arabidopsis thaliana. However, the extent and mechanism of this activation are unknown. Here w...
journal_title:eLife
pub_type: 杂志文章
doi:10.7554/eLife.42530
更新日期:2019-05-28 00:00:00
abstract::Most funding agencies rely on peer review to evaluate grant applications and proposals, but research into the use of this process by funding agencies has been limited. Here we explore if two changes to the organization of peer review for proposals submitted to various funding actions by the European Union has an influ...
journal_title:eLife
pub_type: 杂志文章
doi:10.7554/eLife.59338
更新日期:2021-01-13 00:00:00