abstract：:As a result of sex chromosome differentiation from ancestral autosomes, male mammalian cells only contain one X chromosome. It has long been hypothesized that X-linked gene expression levels have become doubled in males to restore the original transcriptional output, and that the resulting X overexpression in females ...

journal_title：PLoS biology

authors： Julien P,Brawand D,Soumillon M,Necsulea A,Liechti A,Schütz F,Daish T,Grützner F,Kaessmann H

更新日期：2012-01-01 00:00:00

abstract：:Genetically identical cells grown in the same culture display striking cell-to-cell heterogeneity in gene expression and other traits. A crucial challenge is to understand how much of this heterogeneity reflects the noise tolerance of a robust system and how much serves a biological function. In bacteria, stochastic g...

journal_title：PLoS biology

authors： Levy SF,Ziv N,Siegal ML

更新日期：2012-01-01 00:00:00

abstract：:The human gut harbours a large and genetically diverse population of symbiotic microbes that both feed and protect the host. Evolutionary theory, however, predicts that such genetic diversity can destabilise mutualistic partnerships. How then can the mutualism of the human microbiota be explained? Here we develop an i...

journal_title：PLoS biology

authors： Schluter J,Foster KR

更新日期：2012-01-01 00:00:00

abstract：:Bax/Bak-mediated mitochondrial outer membrane permeabilization (MOMP) is essential for "intrinsic" apoptotic cell death. Published studies used synthetic liposomes to reveal an intrinsic pore-forming activity of Bax, but it is unclear how other mitochondrial outer membrane (MOM) proteins might facilitate this function...

journal_title：PLoS biology

authors： Kushnareva Y,Andreyev AY,Kuwana T,Newmeyer DD

更新日期：2012-01-01 00:00:00

abstract：:Robust biological systems are expected to accumulate cryptic genetic variation that does not affect the system output in standard conditions yet may play an evolutionary role once phenotypically expressed under a strong perturbation. Genetic variation that is cryptic relative to a robust trait may accumulate neutrally...

journal_title：PLoS biology

authors： Duveau F,Félix MA

更新日期：2012-01-01 00:00:00

abstract：:Hox transcription factors control a number of developmental processes with the help of the PBC class proteins. In vitro analyses have established that the formation of Hox/PBC complexes relies on a short conserved Hox protein motif called the hexapeptide (HX). This paradigm is at the basis of the vast majority of expe...

journal_title：PLoS biology

authors： Hudry B,Remacle S,Delfini MC,Rezsohazy R,Graba Y,Merabet S

更新日期：2012-01-01 00:00:00

abstract：:Recent cancer studies emphasize that genetic and heritable epigenetic changes drive the evolutionary rate of cancer progression and drug resistance. We discuss the ways in which nonheritable aspects of cellular variability may significantly increase evolutionary rate. Nonheritable variability arises by stochastic fluc...

journal_title：PLoS biology

authors： Frank SA,Rosner MR

更新日期：2012-01-01 00:00:00

abstract：:One of the most influential observations in molecular evolution has been a strong association between local recombination rate and nucleotide polymorphisms across the genome. This is interpreted as evidence for ubiquitous natural selection. The alternative explanation, that recombination is mutagenic, has been rejecte...

journal_title：PLoS biology

authors： McGaugh SE,Heil CS,Manzano-Winkler B,Loewe L,Goldstein S,Himmel TL,Noor MA

更新日期：2012-01-01 00:00:00

abstract：:A recent report by the Institute of Medicine leaves few urgent reasons standing for the continued use of chimpanzees in biomedical research. It is high time to think about their retirement, Frans de Waal argues, without neglecting prospects for non-invasive research on behavior, cognition, and genetics. ...

journal_title：PLoS biology

authors： de Waal FB

更新日期：2012-01-01 00:00:00

abstract：:Changes in the physical interaction between cis-regulatory DNA sequences and proteins drive the evolution of gene expression. However, it has proven difficult to accurately quantify evolutionary rates of such binding change or to estimate the relative effects of selection and drift in shaping the binding evolution. He...

journal_title：PLoS biology

authors： Ni X,Zhang YE,Nègre N,Chen S,Long M,White KP

更新日期：2012-01-01 00:00:00

abstract：:In all vertebrates hearing and touch represent two distinct sensory systems that both rely on the transformation of mechanical force into electrical signals. There is an extensive literature describing single gene mutations in humans that cause hearing impairment, but there are essentially none for touch. Here we firs...

journal_title：PLoS biology

authors： Frenzel H,Bohlender J,Pinsker K,Wohlleben B,Tank J,Lechner SG,Schiska D,Jaijo T,Rüschendorf F,Saar K,Jordan J,Millán JM,Gross M,Lewin GR

更新日期：2012-01-01 00:00:00

abstract：:While multiple studies have reported the accelerated evolution of brain gene expression in the human lineage, the mechanisms underlying such changes are unknown. Here, we address this issue from a developmental perspective, by analyzing mRNA and microRNA (miRNA) expression in two brain regions within macaques, chimpan...

journal_title：PLoS biology

authors： Somel M,Liu X,Tang L,Yan Z,Hu H,Guo S,Jiang X,Zhang X,Xu G,Xie G,Li N,Hu Y,Chen W,Pääbo S,Khaitovich P

更新日期：2011-12-01 00:00:00

abstract：:Adaptor protein (AP) complexes sort cargo into vesicles for transport from one membrane compartment of the cell to another. Four distinct AP complexes have been identified, which are present in most eukaryotes. We report the existence of a fifth AP complex, AP-5. Tagged AP-5 localises to a late endosomal compartment i...

journal_title：PLoS biology

authors： Hirst J,Barlow LD,Francisco GC,Sahlender DA,Seaman MN,Dacks JB,Robinson MS

更新日期：2011-10-01 00:00:00

abstract：:The wing of the fruit fly, Drosophila melanogaster, with its simple, two-dimensional structure, is a model organ well suited for a systems biology approach. The wing arises from an epithelial sac referred to as the wing imaginal disc, which undergoes a phase of massive growth and concomitant patterning during larval s...

journal_title：PLoS biology

authors： Hamaratoglu F,de Lachapelle AM,Pyrowolakis G,Bergmann S,Affolter M

更新日期：2011-10-01 00:00:00

abstract：:Every year, ovarian cancer kills approximately 14,000 women in the United States and more than 140,000 women worldwide. Most of these deaths are caused by tumors of the serous histological type, which is rarely diagnosed before it has disseminated. By deep paired-end sequencing of mRNA from serous ovarian cancers, fol...

journal_title：PLoS biology

authors： Salzman J,Marinelli RJ,Wang PL,Green AE,Nielsen JS,Nelson BH,Drescher CW,Brown PO

更新日期：2011-09-01 00:00:00

abstract：:The developing pancreatic epithelium gives rise to all endocrine and exocrine cells of the mature organ. During organogenesis, the epithelial cells receive essential signals from the overlying mesenchyme. Previous studies, focusing on ex vivo tissue explants or complete knockout mice, have identified an important role...

journal_title：PLoS biology

authors： Landsman L,Nijagal A,Whitchurch TJ,Vanderlaan RL,Zimmer WE,Mackenzie TC,Hebrok M

更新日期：2011-09-01 00:00:00

abstract：:Mitochondrial complex I, the largest and most complicated proton pump of the respiratory chain, links the electron transfer from NADH to ubiquinone to the pumping of four protons from the matrix into the intermembrane space. In humans, defects in complex I are involved in a wide range of degenerative disorders. Recent...

journal_title：PLoS biology

authors： Dröse S,Krack S,Sokolova L,Zwicker K,Barth HD,Morgner N,Heide H,Steger M,Nübel E,Zickermann V,Kerscher S,Brutschy B,Radermacher M,Brandt U

更新日期：2011-08-01 00:00:00

abstract：:Glial cells surround neuronal endings to create enclosed compartments required for neuronal function. This architecture is seen at excitatory synapses and at sensory neuron receptive endings. Despite the prevalence and importance of these compartments, how they form is not known. We used the main sensory organ of C. e...

journal_title：PLoS biology

authors： Oikonomou G,Perens EA,Lu Y,Watanabe S,Jorgensen EM,Shaham S

更新日期：2011-08-01 00:00:00

abstract：:Hypoxia-inducible factor (HIF) is a nuclear transcription factor that responds to environmental and pathological hypoxia to induce metabolic adaptation, vascular growth, and cell survival. Here we found that HIF subunits and HIF2α in particular were normally expressed in the mediobasal hypothalamus of mice. Hypothalam...

journal_title：PLoS biology

authors： Zhang H,Zhang G,Gonzalez FJ,Park SM,Cai D

更新日期：2011-07-01 00:00:00

abstract：:Centromeres are differentiated chromatin domains, present once per chromosome, that direct segregation of the genome in mitosis and meiosis by specifying assembly of the kinetochore. They are distinct genetic loci in that their identity in most organisms is determined not by the DNA sequences they are associated with,...

journal_title：PLoS biology

authors： Prendergast L,van Vuuren C,Kaczmarczyk A,Doering V,Hellwig D,Quinn N,Hoischen C,Diekmann S,Sullivan KF

更新日期：2011-06-01 00:00:00

abstract：:A vast and rich body of information has grown up as a result of the world's enthusiasm for 'omics technologies. Finding ways to describe and make available this information that maximise its usefulness has become a major effort across the 'omics world. At the heart of this effort is the Genomic Standards Consortium (G...

journal_title：PLoS biology

authors： Field D,Amaral-Zettler L,Cochrane G,Cole JR,Dawyndt P,Garrity GM,Gilbert J,Glöckner FO,Hirschman L,Karsch-Mizrachi I,Klenk HP,Knight R,Kottmann R,Kyrpides N,Meyer F,San Gil I,Sansone SA,Schriml LM,Sterk P,Tatusova T

更新日期：2011-06-01 00:00:00

abstract：:The evolution of altruism is a fundamental and enduring puzzle in biology. In a seminal paper Hamilton showed that altruism can be selected for when rb - c > 0, where c is the fitness cost to the altruist, b is the fitness benefit to the beneficiary, and r is their genetic relatedness. While many studies have provided...

journal_title：PLoS biology

authors： Waibel M,Floreano D,Keller L

更新日期：2011-05-01 00:00:00

abstract：:There is increasing evidence that the catch bond mechanism, where binding becomes stronger under tensile force, is a common property among non-covalent interactions between biological molecules that are exposed to mechanical force in vivo. Here, by using the multi-protein tip complex of the mannose-binding type 1 fimb...

journal_title：PLoS biology

authors： Aprikian P,Interlandi G,Kidd BA,Le Trong I,Tchesnokova V,Yakovenko O,Whitfield MJ,Bullitt E,Stenkamp RE,Thomas WE,Sokurenko EV

更新日期：2011-05-01 00:00:00

abstract：:Mitochondrial shape is determined by fission and fusion reactions catalyzed by large GTPases of the dynamin family, mutation of which can cause neurological dysfunction. While fission-inducing protein phosphatases have been identified, the identity of opposing kinase signaling complexes has remained elusive. We report...

journal_title：PLoS biology

authors： Merrill RA,Dagda RK,Dickey AS,Cribbs JT,Green SH,Usachev YM,Strack S

更新日期：2011-04-01 00:00:00

abstract：:In neurons polarized trafficking of vesicle-bound membrane proteins gives rise to the distinct molecular composition and functional properties of axons and dendrites. Despite their central role in shaping neuronal form and function, surprisingly little is known about the molecular processes that mediate polarized targ...

journal_title：PLoS biology

authors： Lewis TL Jr,Mao T,Arnold DB

更新日期：2011-03-01 00:00:00

abstract：:The function of neuronal networks relies on selective assembly of synaptic connections during development. We examined how synaptic specificity emerges in the pontocerebellar projection. Analysis of axon-target interactions with correlated light-electron microscopy revealed that developing pontine mossy fibers elabora...

journal_title：PLoS biology

authors： Kalinovsky A,Boukhtouche F,Blazeski R,Bornmann C,Suzuki N,Mason CA,Scheiffele P

更新日期：2011-02-08 00:00:00

abstract：:In Pseudomonas fluorescens Pf0-1 the availability of inorganic phosphate (Pi) is an environmental signal that controls biofilm formation through a cyclic dimeric GMP (c-di-GMP) signaling pathway. In low Pi conditions, a c-di-GMP phosphodiesterase (PDE) RapA is expressed, depleting cellular c-di-GMP and causing the los...

journal_title：PLoS biology

authors： Newell PD,Boyd CD,Sondermann H,O'Toole GA

更新日期：2011-02-01 00:00:00

abstract：:In photosynthetic organisms, feedback dissipation of excess absorbed light energy balances harvesting of light with metabolic energy consumption. This mechanism prevents photodamage caused by reactive oxygen species produced by the reaction of chlorophyll (Chl) triplet states with O₂. Plants have been found to perform...

journal_title：PLoS biology

authors： Bonente G,Ballottari M,Truong TB,Morosinotto T,Ahn TK,Fleming GR,Niyogi KK,Bassi R

更新日期：2011-01-18 00:00:00

abstract：:The organization and the mechanisms of condensation of mitotic chromosomes remain unsolved despite many decades of efforts. The lack of resolution, tight compaction, and the absence of function-specific chromatin labels have been the key technical obstacles. The correlation between DNA sequence composition and its con...

journal_title：PLoS biology

authors： Strukov YG,Sural TH,Kuroda MI,Sedat JW

更新日期：2011-01-11 00:00:00

abstract：:To elucidate the history of living and extinct elephantids, we generated 39,763 bp of aligned nuclear DNA sequence across 375 loci for African savanna elephant, African forest elephant, Asian elephant, the extinct American mastodon, and the woolly mammoth. Our data establish that the Asian elephant is the closest livi...

journal_title：PLoS biology

authors： Rohland N,Reich D,Mallick S,Meyer M,Green RE,Georgiadis NJ,Roca AL,Hofreiter M

更新日期：2010-12-21 00:00:00

abstract：:Recent findings suggest that functional brain imaging might be used to identify consciousness in patients diagnosed with persistent vegetative state and minimally conscious state. Michael Rafii and James Brewer discuss the potential for fMRI's wider implementation in clinical practice, and associated caveats. ...

journal_title：PLoS biology

authors： Rafii MS,Brewer JB

更新日期：2010-11-30 00:00:00

abstract：:A large fraction of genome variation between individuals is comprised of submicroscopic copy number variation of genomic DNA segments. We assessed the relative contribution of structural changes and gene dosage alterations on phenotypic outcomes with mouse models of Smith-Magenis and Potocki-Lupski syndromes. We pheno...

journal_title：PLoS biology

authors： Ricard G,Molina J,Chrast J,Gu W,Gheldof N,Pradervand S,Schütz F,Young JI,Lupski JR,Reymond A,Walz K

更新日期：2010-11-23 00:00:00

abstract：:Because physical form and function are intimately linked, mechanisms that maintain cell shape and size within strict limits are likely to be important for a wide variety of biological processes. However, while intrinsic controls have been found to contribute to the relatively well-defined shape of bacteria and yeast c...

journal_title：PLoS biology

authors： Picone R,Ren X,Ivanovitch KD,Clarke JD,McKendry RA,Baum B

更新日期：2010-11-16 00:00:00

abstract：:The mechanisms by which genes control organ shape are poorly understood. In principle, genes may control shape by modifying local rates and/or orientations of deformation. Distinguishing between these possibilities has been difficult because of interactions between patterns, orientations, and mechanical constraints du...

journal_title：PLoS biology

authors： Green AA,Kennaway JR,Hanna AI,Bangham JA,Coen E

更新日期：2010-11-09 00:00:00

abstract：:The WRAP53 gene gives rise to a p53 antisense transcript that regulates p53. This gene also encodes a protein that directs small Cajal body-specific RNAs to Cajal bodies. Cajal bodies are nuclear organelles involved in diverse functions such as processing ribonucleoproteins important for splicing. Here we identify the...

journal_title：PLoS biology

authors： Mahmoudi S,Henriksson S,Weibrecht I,Smith S,Söderberg O,Strömblad S,Wiman KG,Farnebo M

更新日期：2010-11-02 00:00:00

abstract：:Recent analyses of the fossil record and molecular phylogenies suggest that there are fundamental limits to biodiversity, possibly arising from constraints in the availability of space, resources, or ecological niches. Under this hypothesis, speciation rates decay over time and biodiversity eventually saturates, with ...

journal_title：PLoS biology

authors： Morlon H,Potts MD,Plotkin JB

更新日期：2010-09-28 00:00:00

abstract：:Certain bacterial adhesins appear to promote a pathogen's extracellular lifestyle rather than its entry into host cells. However, little is known about the stimuli elicited upon such pathogen host-cell interactions. Here, we report that type IV pili (Tfp)-producing Neisseria gonorrhoeae (P(+)GC) induces an immediate r...

journal_title：PLoS biology

authors： Boettcher JP,Kirchner M,Churin Y,Kaushansky A,Pompaiah M,Thorn H,Brinkmann V,Macbeath G,Meyer TF

更新日期：2010-08-24 00:00:00

abstract：:Domestic dogs exhibit tremendous phenotypic diversity, including a greater variation in body size than any other terrestrial mammal. Here, we generate a high density map of canine genetic variation by genotyping 915 dogs from 80 domestic dog breeds, 83 wild canids, and 10 outbred African shelter dogs across 60,968 sin...

journal_title：PLoS biology

authors： Boyko AR,Quignon P,Li L,Schoenebeck JJ,Degenhardt JD,Lohmueller KE,Zhao K,Brisbin A,Parker HG,vonHoldt BM,Cargill M,Auton A,Reynolds A,Elkahloun AG,Castelhano M,Mosher DS,Sutter NB,Johnson GS,Novembre J,Hubisz MJ,

更新日期：2010-08-10 00:00:00

abstract：:The F-type ATP synthase complex is a rotary nano-motor driven by proton motive force to synthesize ATP. Its F(1) sector catalyzes ATP synthesis, whereas the F(o) sector conducts the protons and provides a stator for the rotary action of the complex. Components of both F(1) and F(o) sectors are highly conserved across ...

journal_title：PLoS biology

authors： Balabaskaran Nina P,Dudkina NV,Kane LA,van Eyk JE,Boekema EJ,Mather MW,Vaidya AB

更新日期：2010-07-13 00:00:00

abstract：:Many species are experiencing sustained environmental change mainly due to human activities. The unusual rate and extent of anthropogenic alterations of the environment may exceed the capacity of developmental, genetic, and demographic mechanisms that populations have evolved to deal with environmental change. To begi...

journal_title：PLoS biology

authors： Chevin LM,Lande R,Mace GM

更新日期：2010-04-27 00:00:00