Maximum likelihood implementation of an isolation-with-migration model with three species for testing speciation with gene flow.

abstract：:Identification of recently gained spliceosomal introns would provide crucial evidence in the continuing debate concerning the age and evolutionary significance of introns. A previously published genomic analysis reported to have identified 122 introns that had been gained since the divergence of the nematodes Caenorha...

journal_title：Molecular biology and evolution

authors： Roy SW,Penny D

更新日期：2006-12-01 00:00:00

abstract：:Genetic studies of Tibetans, an ethnic group with a long-lasting presence on the Tibetan Plateau which is known as the highest plateau in the world, may offer a unique opportunity to understand the biological adaptations of human beings to high-altitude environments. We conducted a genome-wide study of 1,000,000 genet...

journal_title：Molecular biology and evolution

authors： Xu S,Li S,Yang Y,Tan J,Lou H,Jin W,Yang L,Pan X,Wang J,Shen Y,Wu B,Wang H,Jin L

更新日期：2011-02-01 00:00:00

abstract：:We recently introduced a novel method for estimating selection pressures on proteins, termed "volatility," which requires only a single genome sequence. Some criticisms that have been levied against this approach are valid, but many others are based on misconceptions of volatility, or they apply equally to comparative...

journal_title：Molecular biology and evolution

authors： Plotkin JB,Dushoff J,Desai MM,Fraser HB

更新日期：2006-08-01 00:00:00

abstract：:While it is widely accepted that most animals (Metazoa) do not have endogenous cellulases, relying instead on intestinal symbionts for cellulose digestion, the glycosyl hydrolase family 9 (GHF9) cellulases found in the genomes of termites, abalone, and sea squirts could be an exception. Using information from expresse...

journal_title：Molecular biology and evolution

authors： Davison A,Blaxter M

更新日期：2005-05-01 00:00:00

abstract：:Purifying selection can substantially alter patterns of molecular evolution. Its main effect is to reduce overall levels of genetic variation, leading to a reduced effective population size. However, it also distorts genealogies relative to neutral expectations. A structured coalescent method has been used to describe...

journal_title：Molecular biology and evolution

authors： Nicolaisen LE,Desai MM

更新日期：2012-11-01 00:00:00

abstract：:The orientation of closely linked genes in mammalian genomes is not random: there are more head-to-head (h2h) gene pairs than expected. To understand the origin of this enrichment in h2h gene pairs, we have analyzed the phylogenetic distribution of gene pairs separated by less than 600 bp of intergenic DNA (gene duos)...

journal_title：Molecular biology and evolution

authors： Franck E,Hulsen T,Huynen MA,de Jong WW,Lubsen NH,Madsen O

更新日期：2008-09-01 00:00:00

abstract：:Parasitoid wasps use venom to manipulate the immunity and metabolism of their host insects in a variety of ways to provide resources for their offspring. Yet, how genes are recruited and evolve to perform venom functions remain open questions. A recently recognized source of eukaryotic genome innovation is lateral gen...

journal_title：Molecular biology and evolution

authors： Martinson EO,Martinson VG,Edwards R,Mrinalini,Werren JH

更新日期：2016-04-01 00:00:00

abstract：:Alpha-defensins are a family of mammalian antimicrobial peptides that exhibit variable activity against a panel of microbes, including bacteria, fungi, and enveloped viruses. We have employed a maximum-likelihood approach to detect evidence of positive selection (adaptive evolution) in the evolution of these important...

journal_title：Molecular biology and evolution

authors： Lynn DJ,Lloyd AT,Fares MA,O'Farrelly C

更新日期：2004-05-01 00:00:00

abstract：:In the age of whole-genome population genetics, so-called genomic scan studies often conclude with a long list of putatively selected loci. These lists are then further scrutinized to annotate these regions by gene function, corresponding biological processes, expression levels, or gene networks. Such annotations are ...

journal_title：Molecular biology and evolution

authors： Pavlidis P,Jensen JD,Stephan W,Stamatakis A

更新日期：2012-10-01 00:00:00

abstract：:Positive Darwinian selection promotes fixations of advantageous mutations during gene evolution and is probably responsible for most adaptations. Detecting positive selection at the DNA sequence level is of substantial interest because such information provides significant insights into possible functional alterations...

journal_title：Molecular biology and evolution

authors： Zhang J

更新日期：2004-07-01 00:00:00

abstract：:Hitchhiking effects of advantageous mutations have been invoked to explain reduced polymorphism in regions of low crossing-over in Drosophila. Besides reducing DNA heterozygosity, hitchhiking effects should produce strong linkage disequilibrium and a frequency spectrum skewed toward an excess of rare polymorphisms (co...

journal_title：Molecular biology and evolution

authors： Begun DJ,Aquadro CF

更新日期：1995-05-01 00:00:00

abstract：:This report describes a lysozyme expressed at high levels in the stomach of the hoatzin, the only known foregut-fermenting bird. Evolutionary comparison places it among the calcium-binding lysozymes rather than among the conventional types. Conventional lysozymes were recruited as digestive enzymes twice in the evolut...

journal_title：Molecular biology and evolution

authors： Kornegay JR,Schilling JW,Wilson AC

更新日期：1994-11-01 00:00:00

abstract：:We have investigated intron evolution in the compact genomes of 2 closely related species of pufferfishes, Fugu rubripes and Tetraodon nigroviridis, that diverged about 32 million years ago (MYA). Analysis of 148,028 aligned intron positions in 13,547 gene pairs using human as an outgroup identified 57 and 24 intron l...

journal_title：Molecular biology and evolution

authors： Loh YH,Brenner S,Venkatesh B

更新日期：2008-03-01 00:00:00

abstract：:When bacteria evolve resistance against a particular antibiotic, they may simultaneously gain increased sensitivity against a second one. Such collateral sensitivity may be exploited to develop novel, sustainable antibiotic treatment strategies aimed at containing the current, dramatic spread of drug resistance. To da...

journal_title：Molecular biology and evolution

authors： Barbosa C,Trebosc V,Kemmer C,Rosenstiel P,Beardmore R,Schulenburg H,Jansen G

更新日期：2017-09-01 00:00:00

abstract：:Eutrema salsugineum and Schrenkiella parvula are salt-tolerant relatives of the salt-sensitive species Arabidopsis thaliana. An important component of salt tolerance is the regulation of Na(+) ion homeostasis, which occurs in part through proteins encoded by the Cation/Proton Antiporter-1 (CPA1) gene family. We used a...

journal_title：Molecular biology and evolution

authors： Jarvis DE,Ryu CH,Beilstein MA,Schumaker KS

更新日期：2014-08-01 00:00:00

abstract：:Detecting selection on codon usage (CU) is a difficult task, since CU can be shaped by both the mutational process and selective constraints operating at the DNA, RNA, and protein levels. Yang and Nielsen (2008) developed a test (which we call CUYN) for detecting selection on CU using two competing mutation-selection ...

journal_title：Molecular biology and evolution

authors： Laurin-Lemay S,Philippe H,Rodrigue N

更新日期：2018-06-01 00:00:00

abstract：:Mouse has emerged as the most common model organism in biomedicine. Here, we analyzed the tolerance to the loss-of-function (LoF) of selenoprotein genes, estimated from mouse knockouts and the frequency of LoF variants in humans. We found not only a general correspondence in tolerance (e.g., GPX1, GPX2) and intoleranc...

journal_title：Molecular biology and evolution

authors： Santesmasses D,Mariotti M,Gladyshev VN

更新日期：2020-02-01 00:00:00

abstract：:Epigenetic information, which can be passed on independently of the DNA sequence, is stored in part in the form of histone posttranslational modifications and specific histone variants. Although complexes necessary for deposition have been identified for canonical and variant histones, information regarding the chroma...

journal_title：Molecular biology and evolution

authors： Ashraf K,Nabeel-Shah S,Garg J,Saettone A,Derynck J,Gingras AC,Lambert JP,Pearlman RE,Fillingham J

更新日期：2019-05-01 00:00:00

abstract：:Cryptophytes are photosynthetic protists that have acquired their plastids through the secondary symbiotic uptake of a red alga. A remarkable feature of cryptophytes is that they maintain a reduced form of the red algal nucleus, the nucleomorph, between the second and third plastid membranes (periplastidial compartmen...

journal_title：Molecular biology and evolution

authors： Stibitz TB,Keeling PJ,Bhattacharya D

更新日期：2000-11-01 00:00:00

abstract：:Pseudogenes are nonfunctional relics of formerly functional genes and are thought to evolve neutrally. In some pseudogenes, however, the molecular evolutionary patterns are atypical of neutrally evolving sequences, exhibiting sequence conservation, codon-usage bias, and other features associated with functional genes....

journal_title：Molecular biology and evolution

authors： Podlaha O,Zhang J

更新日期：2004-12-01 00:00:00

abstract：:Although endogenous retroviruses are common across vertebrate genomes, the koala retrovirus (KoRV) is the only retrovirus known to be currently invading the germ line of its host. KoRV is believed to have first infected koalas in northern Australia less than two centuries ago. We examined KoRV in 28 koala museum skins...

journal_title：Molecular biology and evolution

authors： Ávila-Arcos MC,Ho SY,Ishida Y,Nikolaidis N,Tsangaras K,Hönig K,Medina R,Rasmussen M,Fordyce SL,Calvignac-Spencer S,Willerslev E,Gilbert MT,Helgen KM,Roca AL,Greenwood AD

更新日期：2013-02-01 00:00:00

abstract：:Liver and intestinal flukes of the family Fasciolidae cause zoonotic food-borne infections that impact both agriculture and human health throughout the world. Their evolutionary history and the genetic basis underlying their phenotypic and ecological diversity are not well understood. To close that knowledge gap, we c...

journal_title：Molecular biology and evolution

authors： Choi YJ,Fontenla S,Fischer PU,Le TH,Costábile A,Blair D,Brindley PJ,Tort JF,Cabada MM,Mitreva M

更新日期：2020-01-01 00:00:00

abstract：:Operons coding for the enzyme arsenite oxidase have been detected in the genomes from Archaea and Bacteria by Blast searches using the amino acid sequences of the respective enzyme characterized in two different beta-proteobacteria as templates. Sequence analyses show that in all these species, arsenite oxidase is tra...

journal_title：Molecular biology and evolution

authors： Lebrun E,Brugna M,Baymann F,Muller D,Lièvremont D,Lett MC,Nitschke W

更新日期：2003-05-01 00:00:00

abstract：:The human major histocompatibility complex (Mhc) is a chromosomal segment approximately 4 million bp long that contains > or = 84 genes. Some of these genes code for the class I and class II molecules, while the remaining genes code for complement components, cytochrome P450, tumor necrosis factor, and many other, unr...

journal_title：Molecular biology and evolution

authors： Klein J,O'hUigin C,Figueroa F,Mayer WE,Klein D

更新日期：1993-01-01 00:00:00

abstract：:Genome and transcript sequences are composed of long strings of nucleotide monomers (A, C, G, and T/U) that require different quantities of nitrogen atoms for biosynthesis. Here, it is shown that the strength of selection acting on transcript nitrogen content is influenced by the amount of nitrogen plants require to c...

journal_title：Molecular biology and evolution

authors： Kelly S

更新日期：2018-07-01 00:00:00

abstract：:Directional evolution in microsatellites is the tendency for microsatellites either to increase or to decrease in size over time between populations. We analyzed 99 microsatellite loci in a sample of 193 maize plants representing the entire pre-Columbian range of this crop for evidence of directional evolution. We too...

journal_title：Molecular biology and evolution

authors： Vigouroux Y,Matsuoka Y,Doebley J

更新日期：2003-09-01 00:00:00

abstract：:Computational tools with a balanced sensitivity and specificity in identification of candidate cancer drivers are highly desired. In this study, we propose a new statistical test, namely the dJ/dS ratio test, to compute the relative mutation rate of exon/intron junction sites (dJ) to synonymous sites (dS); observation...

journal_title：Molecular biology and evolution

authors： Chen H,Xing K,He X

更新日期：2015-08-01 00:00:00

abstract：:Cytochrome c oxidase (COX) consists of 13 subunits, 3 encoded in the mitochondrial genome and 10 in the nucleus. Little is known of the role of the nuclear-encoded subunits, some of which exhibit tissue-specific isoforms. Subunit VIa is unique in having tissue-specific isoforms in all mammalian species examined. We ex...

journal_title：Molecular biology and evolution

authors： Schmidt TR,Jaradat SA,Goodman M,Lomax MI,Grossman LI

更新日期：1997-06-01 00:00:00

abstract：:Because they represent the earliest divergences of the Chlorophyta and include the smallest known eukaryotes (e.g., the coccoid Ostreococcus), the morphologically diverse unicellular green algae making up the Prasinophyceae are central to our understanding of the evolutionary patterns that accompanied the radiation of...

journal_title：Molecular biology and evolution

authors： Turmel M,Gagnon MC,O'Kelly CJ,Otis C,Lemieux C

更新日期：2009-03-01 00:00:00

abstract：:The internal consistency of the PAM matrix model of protein evolution is here investigated. The 1 PAM matrix has been constructed from amino acid replacements observed in closely related sequences. Such replacements are of two types, those that do not require an intermediate amino acid replacement and those that do. T...

journal_title：Molecular biology and evolution

authors： Wilbur WJ

更新日期：1985-09-01 00:00:00