The mosaic nature of the eukaryotic nucleus.

abstract：:Much like other indigenous domesticated animals, Tibetan chickens living at high altitudes (2,200-4,100 m) show specific physiological adaptations to the extreme environmental conditions of the Tibetan Plateau, but the genetic bases of these adaptations are not well characterized. Here, we assembled a de novo genome o...

journal_title：Molecular biology and evolution

authors： Wang MS,Li Y,Peng MS,Zhong L,Wang ZJ,Li QY,Tu XL,Dong Y,Zhu CL,Wang L,Yang MM,Wu SF,Miao YW,Liu JP,Irwin DM,Wang W,Wu DD,Zhang YP

更新日期：2015-07-01 00:00:00

abstract：:Barley (Hordeum vulgare) is a major crop, grown worldwide and in a wide range of climatic conditions. Despite its importance as a crop species, little is known about the population genetics of barley and the effects of bottlenecks, adaptation, and gene flow on genetic diversity within and between landrace populations....

journal_title：Molecular biology and evolution

authors： Leino MW,Hagenblad J

更新日期：2010-04-01 00:00:00

abstract：:Transposable elements are widespread mobile DNA sequences able to integrate into new locations within genomes. Through transposition and recombination, they significantly contribute to genome plasticity and evolution. They can also regulate gene expression and provide regulatory and coding sequences (CDSs) for the evo...

journal_title：Molecular biology and evolution

authors： Böhne A,Zhou Q,Darras A,Schmidt C,Schartl M,Galiana-Arnoux D,Volff JN

更新日期：2012-02-01 00:00:00

abstract：:Successful fertilization in free-spawning marine organisms depends on the interactions between genes expressed on the surfaces of eggs and sperm. Positive selection frequently characterizes the molecular evolution of such genes, raising the possibility that some common deterministic process drives the evolution of gam...

journal_title：Molecular biology and evolution

authors： Riginos C,Wang D,Abrams AJ

更新日期：2006-10-01 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：:Discrepancies in phylogenetic trees of bacteria and archaea are often explained as lateral gene transfer events. However, such discrepancies may also be due to phylogenetic artifacts or orthology assignment problems. A first step that may help to resolve this dilemma is to estimate the extent of phylogenetic inconsist...

journal_title：Molecular biology and evolution

authors： Soria-Carrasco V,Castresana J

更新日期：2008-11-01 00:00:00

abstract：:Traditionally, living cetaceans (order Cetacea) are classified into two highly distinct suborders: the echolocating toothed whales, Odontoceti, and the filter-feeding baleen whales, Mysticeti. A molecular phylogeny based on 1,352 base pairs of two mitochondrial ribosomal gene segments and the mitochondrial cytochrome ...

journal_title：Molecular biology and evolution

authors： Milinkovitch MC,Meyer A,Powell JR

更新日期：1994-11-01 00:00:00

abstract：:Most of the well-characterized mitochondrial genomes from diverse green algal lineages are circular mapping DNA molecules; however, Chlamydomonas reinhardtii has a linear 15.8 kb unit mitochondrial genome with 580 or 581 bp inverted repeat ends. In mitochondrial-enriched fractions prepared from Polytomella parva (=P. ...

journal_title：Molecular biology and evolution

authors： Fan J,Lee RW

更新日期：2002-07-01 00:00:00

abstract：:Measuring natural selection on genomic elements involved in the cis-regulation of gene expression--such as transcriptional enhancers and promoters--is critical for understanding the evolution of genomes, yet it remains a major challenge. Many studies have attempted to detect positive or negative selection in these non...

journal_title：Molecular biology and evolution

authors： Smith JD,McManus KF,Fraser HB

更新日期：2013-11-01 00:00:00

abstract：:Mitochondrial genomes of metazoans, given their elevated rates of evolution, have served as pivotal markers for phylogeographic studies and recent phylogenetic events. In order to determine the dynamics of spontaneous mitochondrial mutations in small populations in the absence and presence of selection, we evolved mut...

journal_title：Molecular biology and evolution

authors： Konrad A,Thompson O,Waterston RH,Moerman DG,Keightley PD,Bergthorsson U,Katju V

更新日期：2017-06-01 00:00:00

abstract：:The DnaK-DnaJ-GrpE (KJE) chaperone system functions at the fulcrum of protein homeostasis in bacteria. It interacts both with nascent polypeptides and with proteins that have become unfolded, either funneling its clients toward the native state or ushering misfolded proteins into degradation. In line with its key role...

journal_title：Molecular biology and evolution

authors： Warnecke T

更新日期：2012-11-01 00:00:00

abstract：:Why are certain bacterial genomes so small and compact? The adaptive genome streamlining hypothesis posits that selection acts to reduce genome size because of the metabolic burden of replicating DNA. To reveal the impact of genome streamlining on cellular traits, we reduced the Escherichia coli genome by up to 20% by...

journal_title：Molecular biology and evolution

authors： Karcagi I,Draskovits G,Umenhoffer K,Fekete G,Kovács K,Méhi O,Balikó G,Szappanos B,Györfy Z,Fehér T,Bogos B,Blattner FR,Pál C,Pósfai G,Papp B

更新日期：2016-05-01 00:00:00

abstract：:Patterns of population structure provide insights into evolutionary processes and help identify groups of individuals for genotype-phenotype association studies. With increasing availability of polymorphic molecular markers across genomes, the examination of population structure using large numbers of unlinked loci ha...

journal_title：Molecular biology and evolution

authors： Payseur BA,Jing P

更新日期：2009-06-01 00:00:00

abstract：:We propose an improved version of the neighbor-joining (NJ) algorithm of Saitou and Nei. This new algorithm, BIONJ, follows the same agglomerative scheme as NJ, which consists of iteratively picking a pair of taxa, creating a new mode which represents the cluster of these taxa, and reducing the distance matrix by repl...

journal_title：Molecular biology and evolution

authors： Gascuel O

更新日期：1997-07-01 00:00:00

abstract：:Protein tyrosine phosphorylation is a key regulatory modification in metazoans, and the corresponding kinase enzymes have diversified dramatically. This diversification is correlated with a genome-wide reduction in protein tyrosine content, and it was recently suggested that this reduction was driven by selection to a...

journal_title：Molecular biology and evolution

authors： Pandya S,Struck TJ,Mannakee BK,Paniscus M,Gutenkunst RN

更新日期：2015-01-01 00:00:00

abstract：:Histone modification is an important mechanism of gene regulation in eukaryotes. Why many histone modifications can be stably maintained in the midst of genetic and environmental changes is a fundamental question in evolutionary biology. We obtained genome-wide profiles of three histone marks, H3 lysine 4 tri-methylat...

journal_title：Molecular biology and evolution

authors： Woo YH,Li WH

更新日期：2012-07-01 00:00:00

abstract：:Standard methods of phylogenetic reconstruction are based on models that assume homogeneity of nucleotide composition among taxa. However, this assumption is often violated in biological data sets. In this study, we examine possible effects of nucleotide heterogeneity among lineages on the phylogenetic reconstruction ...

journal_title：Molecular biology and evolution

authors： Herbeck JT,Degnan PH,Wernegreen JJ

更新日期：2005-03-01 00:00:00

abstract：:Polyploidization events have occurred during the evolution of many fungi, plant, and animal species and are thought to contribute to speciation and tumorigenesis, however little is known about how ploidy level contributes to adaptation at the molecular level. Here we integrate whole genome sequencing, RNA expression a...

journal_title：Molecular biology and evolution

authors： Scott AL,Richmond PA,Dowell RD,Selmecki AM

更新日期：2017-10-01 00:00:00

abstract：:The malaria parasite's chloroquine resistance transporter (CRT) is an integral membrane protein localized to the parasite's acidic digestive vacuole. The function of CRT is not known and the protein was originally described as a transporter simply because it possesses 10 transmembrane domains. In wild-type (chloroquin...

journal_title：Molecular biology and evolution

authors： Martin RE,Kirk K

更新日期：2004-10-01 00:00:00

abstract：:The evolutionary expansion of CAG repeats in human triplet expansion disease genes is intriguing because of their deleterious phenotype. In the past, this expansion has been suggested to reflect a broad genomewide expansion of repeats, which would imply that mutational and evolutionary processes acting on repeats diff...

journal_title：Molecular biology and evolution

authors： Hancock JM,Worthey EA,Santibáñez-Koref MF

更新日期：2001-06-01 00:00:00

abstract：:Repeated attempts to map the genomic basis of complex traits often yield different outcomes because of the influence of genetic background, gene-by-environment interactions, and/or statistical limitations. However, where repeatability is low at the level of individual genes, overlap often occurs in gene ontology categ...

journal_title：Molecular biology and evolution

authors： Telonis-Scott M,Sgrò CM,Hoffmann AA,Griffin PC

更新日期：2016-04-01 00:00:00

abstract：:Estimation of evolutionary distances from coding sequences must take into account protein-level selection to avoid relative underestimation of longer evolutionary distances. Current modeling of selection via site-to-site rate heterogeneity generally neglects another aspect of selection, namely position-specific amino ...

journal_title：Molecular biology and evolution

authors： Halpern AL,Bruno WJ

更新日期：1998-07-01 00:00:00

abstract：:A correspondence analysis of codon usage in Xenopus laevis revealed that the first axis is strongly correlated with the base composition at third codon positions. The second axis discriminates between putatively highly expressed genes and the other coding sequences, with expression levels being confirmed by the analys...

journal_title：Molecular biology and evolution

authors： Musto H,Cruveiller S,D'Onofrio G,Romero H,Bernardi G

更新日期：2001-09-01 00:00:00

abstract：:Viral genome integration provides a complex route to biological innovation that has rarely but repeatedly occurred in one of the most diverse lineages of organisms on the planet, parasitoid wasps. We describe a novel endogenous virus in braconid wasps derived from pathogenic alphanudiviruses. Limited to a subset of th...

journal_title：Molecular biology and evolution

authors： Burke GR,Simmonds TJ,Sharanowski BJ,Geib SM

更新日期：2018-10-01 00:00:00

abstract：:Sequences of 1,862 chromosomally encoded Escherichia coli K12 proteins were examined to identify genes likely to have arisen by duplication of genes in an ancestral chromosome. The criteria for sequence relatedness were an alignment of at least 100 amino acid residues and a PAM distance (number of accepted point mutat...

journal_title：Molecular biology and evolution

authors： Labedan B,Riley M

更新日期：1995-11-01 00:00:00

abstract：:The question of multiple sequence alignment quality has received much attention from developers of alignment methods. Less forthcoming, however, are practical measures for addressing alignment quality issues in real life settings. Here, we present a simple methodology to help identify and quantify the uncertainties in...

journal_title：Molecular biology and evolution

authors： Landan G,Graur D

更新日期：2007-06-01 00:00:00

abstract：:Various nucleotide substitution models have been developed to accommodate among lineage rate heterogeneity, thereby relaxing the assumptions of the strict molecular clock. Recently developed "uncorrelated relaxed clock" and "random local clock" (RLC) models allow decoupling of nucleotide substitution rates between des...

journal_title：Molecular biology and evolution

authors： Dornburg A,Brandley MC,McGowen MR,Near TJ

更新日期：2012-02-01 00:00:00

abstract：:Sex-biased gene expression is becoming an increasingly important way to study sexual selection at the molecular genetic level. However, little is known about the timing, persistence, and continuity of gene expression required in the creation of distinct male and female phenotypes, and even less about how sex-specific ...

journal_title：Molecular biology and evolution

authors： Mank JE,Nam K,Brunström B,Ellegren H

更新日期：2010-07-01 00:00:00

abstract：:Recent studies of mitochondrial DNA (mtDNA) variation in mammals and Drosophila have shown an excess of amino acid variation within species (replacement polymorphism) relative to the number of silent and replacement differences fixed between species. To examine further this pattern of nonneutral mtDNA evolution, we pr...

journal_title：Molecular biology and evolution

authors： Rand DM,Kann LM

更新日期：1996-07-01 00:00:00

abstract：:Here we use phylogenomics with expressed sequence tag (EST) data from the ecologically important coccolithophore-forming alga Emiliania huxleyi and the plastid-lacking cryptophyte Goniomonas cf. pacifica to establish their phylogenetic positions in the eukaryotic tree. Haptophytes and cryptophytes are members of the p...

journal_title：Molecular biology and evolution

authors： Hackett JD,Yoon HS,Li S,Reyes-Prieto A,Rümmele SE,Bhattacharya D

更新日期：2007-08-01 00:00:00