Auxiliary subunits keep AMPA receptors compact during activation and desensitization.

Abstract:

:Signal transduction at vertebrate excitatory synapses involves the rapid activation of AMPA (α-amino-3-hydroxy-5-methyl-4-isoxazole propionate) receptors, glutamate-gated ion channels whose four subunits assemble as a dimer-of-dimers. Technical advances in cryo-electron microscopy brought a slew of full-length structures of AMPA receptors, on their own and in combination with auxiliary subunits. These structures indicate that dimers might undergo substantial lateral motions during gating, opening up the extracellular layer along the central twofold symmetry axis. We used bifunctional methanethiosulfonate cross-linkers to calibrate the conformations found in functional AMPA receptors in the presence and absence of the auxiliary subunit Stargazin. Our data indicate that extracellular layer of AMPA receptors can get trapped in stable, opened-up conformations, especially upon long exposures to glutamate. In contrast, Stargazin limits this conformational flexibility. Thus, under synaptic conditions, where brief glutamate exposures and the presence of auxiliary proteins dominate, extracellular domains of AMPA receptors likely stay compact during gating.

journal_name

Elife

journal_title

eLife

authors

Baranovic J,Plested AJ

doi

10.7554/eLife.40548

subject

Has Abstract

pub_date

2018-12-06 00:00:00

issn

2050-084X

pii

40548

journal_volume

7

pub_type

杂志文章

相关文献

eLife文献大全
  • Addressing selective reporting of experiments through predefined exclusion criteria.

    abstract::The pressure for every research article to tell a clear story often leads researchers in the life sciences to exclude experiments that 'did not work' when they write up their results. However, this practice can lead to reporting bias if the decisions about which experiments to exclude are taken after data have been co...

    journal_title:eLife

    pub_type: 杂志文章

    doi:10.7554/eLife.56626

    authors: Neves K,Amaral OB

    更新日期:2020-05-22 00:00:00

  • Is it possible to reconstruct an accurate cell lineage using CRISPR recorders?

    abstract::Cell lineages provide the framework for understanding how cell fates are decided during development. Describing cell lineages in most organisms is challenging; even a fruit fly larva has ~50,000 cells and a small mammal has >1 billion cells. Recently, the idea of applying CRISPR to induce mutations during development,...

    journal_title:eLife

    pub_type: 杂志文章

    doi:10.7554/eLife.40292

    authors: Salvador-Martínez I,Grillo M,Averof M,Telford MJ

    更新日期:2019-01-28 00:00:00

  • Modulation of Prdm9-controlled meiotic chromosome asynapsis overrides hybrid sterility in mice.

    abstract::Hybrid sterility is one of the reproductive isolation mechanisms leading to speciation. Prdm9, the only known vertebrate hybrid-sterility gene, causes failure of meiotic chromosome synapsis and infertility in male hybrids that are the offspring of two mouse subspecies. Within species, Prdm9 determines the sites of pro...

    journal_title:eLife

    pub_type: 杂志文章

    doi:10.7554/eLife.34282

    authors: Gregorova S,Gergelits V,Chvatalova I,Bhattacharyya T,Valiskova B,Fotopulosova V,Jansa P,Wiatrowska D,Forejt J

    更新日期:2018-03-14 00:00:00

  • Modelling the drivers of the spread of Plasmodium falciparum hrp2 gene deletions in sub-Saharan Africa.

    abstract::Rapid diagnostic tests (RDTs) have transformed malaria diagnosis. The most prevalent P. falciparum RDTs detect histidine-rich protein 2 (PfHRP2). However, pfhrp2 gene deletions yielding false-negative RDTs, first reported in South America in 2010, have been confirmed in Africa and Asia. We developed a mathematical mod...

    journal_title:eLife

    pub_type: 杂志文章

    doi:10.7554/eLife.25008

    authors: Watson OJ,Slater HC,Verity R,Parr JB,Mwandagalirwa MK,Tshefu A,Meshnick SR,Ghani AC

    更新日期:2017-08-24 00:00:00

  • A fitness trade-off between seasons causes multigenerational cycles in phenotype and population size.

    abstract::Although seasonality is widespread and can cause fluctuations in the intensity and direction of natural selection, we have little information about the consequences of seasonal fitness trade-offs for population dynamics. Here we exposed populations of Drosophila melanogaster to repeated seasonal changes in resources a...

    journal_title:eLife

    pub_type: 杂志文章

    doi:10.7554/eLife.18770

    authors: Betini GS,McAdam AG,Griswold CK,Norris DR

    更新日期:2017-02-06 00:00:00

  • BUB-1 promotes amphitelic chromosome biorientation via multiple activities at the kinetochore.

    abstract::Accurate chromosome segregation relies on bioriented amphitelic attachments of chromosomes to microtubules of the mitotic spindle, in which sister chromatids are connected to opposite spindle poles. BUB-1 is a protein of the Spindle Assembly Checkpoint (SAC) that coordinates chromosome attachment with anaphase onset. ...

    journal_title:eLife

    pub_type: 杂志文章

    doi:10.7554/eLife.40690

    authors: Edwards F,Maton G,Gareil N,Canman JC,Dumont J

    更新日期:2018-12-14 00:00:00

  • On the trail of a tropical disease.

    abstract::Learning more about the cells that enable parasitic worms called schistosomes to reproduce inside snails could lead to new treatments that prevent these parasites from being transmitted to humans. ...

    journal_title:eLife

    pub_type: 评论,杂志文章

    doi:10.7554/eLife.01115

    authors: Sánchez Alvarado A

    更新日期:2013-07-30 00:00:00

  • Rapid whole brain imaging of neural activity in freely behaving larval zebrafish (Danio rerio).

    abstract::The internal brain dynamics that link sensation and action are arguably better studied during natural animal behaviors. Here, we report on a novel volume imaging and 3D tracking technique that monitors whole brain neural activity in freely swimming larval zebrafish (Danio rerio). We demonstrated the capability of our ...

    journal_title:eLife

    pub_type: 杂志文章

    doi:10.7554/eLife.28158

    authors: Cong L,Wang Z,Chai Y,Hang W,Shang C,Yang W,Bai L,Du J,Wang K,Wen Q

    更新日期:2017-09-20 00:00:00

  • Step-to-step variations in human running reveal how humans run without falling.

    abstract::Humans can run without falling down, usually despite uneven terrain or occasional pushes. Even without such external perturbations, intrinsic sources like sensorimotor noise perturb the running motion incessantly, making each step variable. Here, using simple and generalizable models, we show that even such small step...

    journal_title:eLife

    pub_type: 杂志文章

    doi:10.7554/eLife.38371

    authors: Seethapathi N,Srinivasan M

    更新日期:2019-03-19 00:00:00

  • Forniceal deep brain stimulation induces gene expression and splicing changes that promote neurogenesis and plasticity.

    abstract::Clinical trials are currently underway to assess the efficacy of forniceal deep brain stimulation (DBS) for improvement of memory in Alzheimer's patients, and forniceal DBS has been shown to improve learning and memory in a mouse model of Rett syndrome (RTT), an intellectual disability disorder caused by loss-of-funct...

    journal_title:eLife

    pub_type: 杂志文章

    doi:10.7554/eLife.34031

    authors: Pohodich AE,Yalamanchili H,Raman AT,Wan YW,Gundry M,Hao S,Jin H,Tang J,Liu Z,Zoghbi HY

    更新日期:2018-03-23 00:00:00

  • Inhibition of mTORC1 by ER stress impairs neonatal β-cell expansion and predisposes to diabetes in the Akita mouse.

    abstract::Unresolved ER stress followed by cell death is recognized as the main cause of a multitude of pathologies including neonatal diabetes. A systematic analysis of the mechanisms of β-cell loss and dysfunction in Akita mice, in which a mutation in the proinsulin gene causes a severe form of permanent neonatal diabetes, sh...

    journal_title:eLife

    pub_type: 杂志文章

    doi:10.7554/eLife.38472

    authors: Riahi Y,Israeli T,Yeroslaviz R,Chimenez S,Avrahami D,Stolovich-Rain M,Alter I,Sebag M,Polin N,Bernal-Mizrachi E,Dor Y,Cerasi E,Leibowitz G

    更新日期:2018-11-09 00:00:00

  • Plasticity and evolutionary convergence in the locomotor skeleton of Greater Antillean Anolis lizards.

    abstract::Plasticity can put evolution on repeat if development causes species to generate similar morphologies in similar environments. Anolis lizards offer the opportunity to put this role of developmental plasticity to the test. Following colonization of the four Greater Antillean islands, Anolis lizards independently and re...

    journal_title:eLife

    pub_type: 杂志文章

    doi:10.7554/eLife.57468

    authors: Feiner N,Jackson IS,Munch KL,Radersma R,Uller T

    更新日期:2020-08-13 00:00:00

  • Building customizable auto-luminescent luciferase-based reporters in plants.

    abstract::Bioluminescence is a powerful biological signal that scientists have repurposed as a reporter for gene expression in plants and animals. However, there are downsides associated with the need to provide a substrate to these reporters, including its high cost and non-uniform tissue penetration. In this work we reconstit...

    journal_title:eLife

    pub_type: 杂志文章

    doi:10.7554/eLife.52786

    authors: Khakhar A,Starker CG,Chamness JC,Lee N,Stokke S,Wang C,Swanson R,Rizvi F,Imaizumi T,Voytas DF

    更新日期:2020-03-25 00:00:00

  • Homeostatic control of cell wall hydrolysis by the WalRK two-component signaling pathway in Bacillus subtilis.

    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

    authors: Dobihal GS,Brunet YR,Flores-Kim J,Rudner DZ

    更新日期:2019-12-06 00:00:00

  • Perinatal hormones favor CC17 group B Streptococcus intestinal translocation through M cells and hypervirulence in neonates.

    abstract::Group B Streptococcus (GBS) is the leading cause of invasive bacterial neonatal infections. Late-onset diseases (LOD) occur between 7 and 89 days of life and are largely due to the CC17 GBS hypervirulent clone. We studied the impact of estradiol (E2) and progesterone (P4), which impregnate the fetus during pregnancy, ...

    journal_title:eLife

    pub_type: 杂志文章

    doi:10.7554/eLife.48772

    authors: Hays C,Touak G,Bouaboud A,Fouet A,Guignot J,Poyart C,Tazi A

    更新日期:2019-11-11 00:00:00

  • Action history influences subsequent movement via two distinct processes.

    abstract::The characteristics of goal-directed actions tend to resemble those of previously executed actions, but it is unclear whether such effects depend strictly on action history, or also reflect context-dependent processes related to predictive motor planning. Here we manipulated the time available to initiate movements af...

    journal_title:eLife

    pub_type: 杂志文章

    doi:10.7554/eLife.26713

    authors: Marinovic W,Poh E,de Rugy A,Carroll TJ

    更新日期:2017-10-23 00:00:00

  • Importance of miRNA stability and alternative primary miRNA isoforms in gene regulation during Drosophila development.

    abstract::Mature microRNAs (miRNAs) are processed from primary transcripts (pri-miRNAs), and their expression is controlled at transcriptional and post-transcriptional levels. However, how regulation at multiple levels achieves precise control remains elusive. Using published and new datasets, we profile a time course of mature...

    journal_title:eLife

    pub_type: 杂志文章

    doi:10.7554/eLife.38389

    authors: Zhou L,Lim MYT,Kaur P,Saj A,Bortolamiol-Becet D,Gopal V,Tolwinski N,Tucker-Kellogg G,Okamura K

    更新日期:2018-07-19 00:00:00

  • A conserved function for pericentromeric satellite DNA.

    abstract::A universal and unquestioned characteristic of eukaryotic cells is that the genome is divided into multiple chromosomes and encapsulated in a single nucleus. However, the underlying mechanism to ensure such a configuration is unknown. Here, we provide evidence that pericentromeric satellite DNA, which is often regarde...

    journal_title:eLife

    pub_type: 杂志文章

    doi:10.7554/eLife.34122

    authors: Jagannathan M,Cummings R,Yamashita YM

    更新日期:2018-03-26 00:00:00

  • Quantitative properties of a feedback circuit predict frequency-dependent pattern separation.

    abstract::Feedback inhibitory motifs are thought to be important for pattern separation across species. How feedback circuits may implement pattern separation of biologically plausible, temporally structured input in mammals is, however, poorly understood. We have quantitatively determined key properties of netfeedback inhibiti...

    journal_title:eLife

    pub_type: 杂志文章

    doi:10.7554/eLife.53148

    authors: Braganza O,Mueller-Komorowska D,Kelly T,Beck H

    更新日期:2020-02-20 00:00:00

  • Cryo-EM visualization of the ribosome in termination complex with apo-RF3 and RF1.

    abstract::Termination of messenger RNA translation in Bacteria and Archaea is initiated by release factors (RFs) 1 or 2 recognizing a stop codon in the ribosomal A site and releasing the peptide from the P-site transfer RNA. After release, RF-dissociation is facilitated by the G-protein RF3. Structures of ribosomal complexes wi...

    journal_title:eLife

    pub_type: 杂志文章

    doi:10.7554/eLife.00411

    authors: Pallesen J,Hashem Y,Korkmaz G,Koripella RK,Huang C,Ehrenberg M,Sanyal S,Frank J

    更新日期:2013-06-04 00:00:00

  • Prolonged cross-bridge binding triggers muscle dysfunction in a Drosophila model of myosin-based hypertrophic cardiomyopathy.

    abstract::K146N is a dominant mutation in human β-cardiac myosin heavy chain, which causes hypertrophic cardiomyopathy. We examined how Drosophila muscle responds to this mutation and integratively analyzed the biochemical, physiological and mechanical foundations of the disease. ATPase assays, actin motility, and indirect flig...

    journal_title:eLife

    pub_type: 杂志文章

    doi:10.7554/eLife.38064

    authors: Kronert WA,Bell KM,Viswanathan MC,Melkani GC,Trujillo AS,Huang A,Melkani A,Cammarato A,Swank DM,Bernstein SI

    更新日期:2018-08-13 00:00:00

  • A molecular portrait of maternal sepsis from Byzantine Troy.

    abstract::Pregnancy complications are poorly represented in the archeological record, despite their importance in contemporary and ancient societies. While excavating a Byzantine cemetery in Troy, we discovered calcified abscesses among a woman's remains. Scanning electron microscopy of the tissue revealed 'ghost cells', result...

    journal_title:eLife

    pub_type: 杂志文章

    doi:10.7554/eLife.20983

    authors: Devault AM,Mortimer TD,Kitchen A,Kiesewetter H,Enk JM,Golding GB,Southon J,Kuch M,Duggan AT,Aylward W,Gardner SN,Allen JE,King AM,Wright G,Kuroda M,Kato K,Briggs DE,Fornaciari G,Holmes EC,Poinar HN,Pepperell CS

    更新日期:2017-01-10 00:00:00

  • Problems on the back of an envelope.

    abstract::Claims that magnetic fields can be used to manipulate biological systems contradict some basic laws of physics. ...

    journal_title:eLife

    pub_type: 评论,杂志文章

    doi:10.7554/eLife.19569

    authors: Anikeeva P,Jasanoff A

    更新日期:2016-09-08 00:00:00

  • Ubiquitin-dependent regulation of a conserved DMRT protein controls sexually dimorphic synaptic connectivity and behavior.

    abstract::Sex-specific synaptic connectivity is beginning to emerge as a remarkable, but little explored feature of animal brains. We describe here a novel mechanism that promotes sexually dimorphic neuronal function and synaptic connectivity in the nervous system of the nematode Caenorhabditis elegans. We demonstrate that a ph...

    journal_title:eLife

    pub_type: 杂志文章

    doi:10.7554/eLife.59614

    authors: Bayer EA,Stecky RC,Neal L,Katsamba PS,Ahlsen G,Balaji V,Hoppe T,Shapiro L,Oren-Suissa M,Hobert O

    更新日期:2020-10-06 00:00:00

  • The human gut and groundwater harbor non-photosynthetic bacteria belonging to a new candidate phylum sibling to Cyanobacteria.

    abstract::Cyanobacteria were responsible for the oxygenation of the ancient atmosphere; however, the evolution of this phylum is enigmatic, as relatives have not been characterized. Here we use whole genome reconstruction of human fecal and subsurface aquifer metagenomic samples to obtain complete genomes for members of a new c...

    journal_title:eLife

    pub_type: 杂志文章

    doi:10.7554/eLife.01102

    authors: Di Rienzi SC,Sharon I,Wrighton KC,Koren O,Hug LA,Thomas BC,Goodrich JK,Bell JT,Spector TD,Banfield JF,Ley RE

    更新日期:2013-10-01 00:00:00

  • Repeated outbreaks drive the evolution of bacteriophage communication.

    abstract::Recently, a small-molecule communication mechanism was discovered in a range of Bacillus-infecting bacteriophages, which these temperate phages use to inform their lysis-lysogeny decision. We present a mathematical model of the ecological and evolutionary dynamics of such viral communication, and show that a communica...

    journal_title:eLife

    pub_type: 杂志文章

    doi:10.7554/eLife.58410

    authors: Doekes HM,Mulder GA,Hermsen R

    更新日期:2021-01-18 00:00:00

  • Correction: Salt-inducible kinase 3 regulates the mammalian circadian clock by destabilizing PER2 protein.

    abstract:: ...

    journal_title:eLife

    pub_type: 已发布勘误

    doi:10.7554/eLife.66683

    authors: Hayasaka N,Hirano A,Miyoshi Y,Tokuda IT,Yoshitane H,Matsuda J,Fukada Y

    更新日期:2021-01-25 00:00:00

  • The structure of the COPII transport-vesicle coat assembled on membranes.

    abstract::Coat protein complex II (COPII) mediates formation of the membrane vesicles that export newly synthesised proteins from the endoplasmic reticulum. The inner COPII proteins bind to cargo and membrane, linking them to the outer COPII components that form a cage around the vesicle. Regulated flexibility in coat architect...

    journal_title:eLife

    pub_type: 杂志文章

    doi:10.7554/eLife.00951

    authors: Zanetti G,Prinz S,Daum S,Meister A,Schekman R,Bacia K,Briggs JA

    更新日期:2013-09-17 00:00:00

  • Adult axolotls can regenerate original neuronal diversity in response to brain injury.

    abstract::The axolotl can regenerate multiple organs, including the brain. It remains, however, unclear whether neuronal diversity, intricate tissue architecture, and axonal connectivity can be regenerated; yet, this is critical for recovery of function and a central aim of cell replacement strategies in the mammalian central n...

    journal_title:eLife

    pub_type: 杂志文章

    doi:10.7554/eLife.13998

    authors: Amamoto R,Huerta VG,Takahashi E,Dai G,Grant AK,Fu Z,Arlotta P

    更新日期:2016-05-09 00:00:00

  • Spinal microcircuits comprising dI3 interneurons are necessary for motor functional recovery following spinal cord transection.

    abstract::The spinal cord has the capacity to coordinate motor activities such as locomotion. Following spinal transection, functional activity can be regained, to a degree, following motor training. To identify microcircuits involved in this recovery, we studied a population of mouse spinal interneurons known to receive direct...

    journal_title:eLife

    pub_type: 杂志文章

    doi:10.7554/eLife.21715

    authors: Bui TV,Stifani N,Akay T,Brownstone RM

    更新日期:2016-12-15 00:00:00