Within- and between-individual sequence variation among ITS1 copies in the meadow grasshopper Chorthippus parallelus indicates frequent intrachromosomal gene conversion.

abstract：:Understanding how pathogens acquire resistance to drugs is important for the design of treatment strategies, particularly for rapidly evolving viruses such as HIV-1. Drug treatment can exert strong selective pressures and sites within targeted genes that confer resistance frequently evolve far more rapidly than the ne...

journal_title：Molecular biology and evolution

authors： Seoighe C,Ketwaroo F,Pillay V,Scheffler K,Wood N,Duffet R,Zvelebil M,Martinson N,McIntyre J,Morris L,Hide W

更新日期：2007-04-01 00:00:00

abstract：:The Sm family of proteins is closely associated with RNA metabolism throughout all life. These proteins form homomorphic and heteromorphic rings consisting of six or seven subunits with a characteristic central pore, the presence of which is critical for binding U-rich regions of single-stranded RNA. Eubacteria and Ar...

journal_title：Molecular biology and evolution

authors： Scofield DG,Lynch M

更新日期：2008-11-01 00:00:00

abstract：:The ancestral homeland of Australian dingoes and Pacific dogs is proposed to be in South China. However, the location and timing of their dispersal and relationship to dog domestication is unclear. Here, we sequenced 7,000- to 2,000-year-old complete mitochondrial DNA (mtDNA) genomes of 27 ancient canids (one gray wol...

journal_title：Molecular biology and evolution

authors： Zhang M,Sun G,Ren L,Yuan H,Dong G,Zhang L,Liu F,Cao P,Ko AM,Yang MA,Hu S,Wang GD,Fu Q

更新日期：2020-05-01 00:00:00

abstract：:Whole-genome duplications (WGDs) have contributed to gene-repertoire enrichment in many eukaryotic lineages. However, most duplicated genes are eventually lost and it is still unclear why some duplicated genes are evolutionary successful whereas others quickly turn to pseudogenes. Here, we show that dosage constraints...

journal_title：Molecular biology and evolution

authors： Gout JF,Lynch M

更新日期：2015-08-01 00:00:00

abstract：:A major theoretical consequence of selection at a locus is the genetic hitchhiking of linked sites (selective sweep). The extent of hitchhiking around a gene is related to the strength of selection and the rate of recombination, with its impact diminishing with distance from the selected site. At the Rop-1 locus of th...

journal_title：Molecular biology and evolution

authors： Rose CJ,Chapman JR,Marshall SD,Lee SF,Batterham P,Ross HA,Newcomb RD

更新日期：2011-06-01 00:00:00

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：:Isoprene is the most abundant biogenic volatile hydrocarbon compound naturally emitted by plants and plays a major role in atmospheric chemistry. It has been proposed that isoprene synthases (IspS) may readily evolve from other terpene synthases, but this hypothesis has not been experimentally investigated. We isolate...

journal_title：Molecular biology and evolution

authors： Li M,Xu J,Algarra Alarcon A,Carlin S,Barbaro E,Cappellin L,Velikova V,Vrhovsek U,Loreto F,Varotto C

更新日期：2017-10-01 00:00:00

abstract：:Here, we sequenced the 5,419,609 bp circular genome of an Enterobacter aerogenes clinical isolate that killed a patient and was resistant to almost all current antibiotics (except gentamicin) commonly used to treat Enterobacterial infections, including colistin. Genomic and phylogenetic analyses explain the discrepanc...

journal_title：Molecular biology and evolution

authors： Diene SM,Merhej V,Henry M,El Filali A,Roux V,Robert C,Azza S,Gavory F,Barbe V,La Scola B,Raoult D,Rolain JM

更新日期：2013-02-01 00:00:00

abstract：:Numerous studies have used indices of genetic distance between species to reconstruct evolutionary relationships and to estimate divergence time. However, the empirical relationship between molecular-based indices of genetic divergence and divergence time based on the fossil record is poorly known. To date, the result...

journal_title：Molecular biology and evolution

authors： Wayne RK,Van Valkenburgh B,O'Brien SJ

更新日期：1991-05-01 00:00:00

abstract：:The detection of selection, both positive and negative, acting on a DNA sequence or class of nucleotide sites requires comparison with a reference sequence that is unaffected by selection. In Drosophila, recent findings of widespread selective constraint, as well as adaptive evolution, in both coding and noncoding reg...

journal_title：Molecular biology and evolution

authors： Parsch J,Novozhilov S,Saminadin-Peter SS,Wong KM,Andolfatto P

更新日期：2010-06-01 00:00:00

abstract：:About half of the mammalian genome is composed of retroposons. Long interspersed elements (LINEs) and short interspersed elements (SINEs) are the most abundant repetitive elements and account for about 21% and 13% of the human genome, respectively. SINEs have been detected in all major mammalian lineages, except for t...

journal_title：Molecular biology and evolution

authors： Churakov G,Smit AF,Brosius J,Schmitz J

更新日期：2005-04-01 00:00:00

abstract：:Morphological innovations like the acquisition of the neural crest as well as gene family expansions by genome duplication are considered as major leaps in the evolution of the vertebrate lineage. Using comparative genomic analyses, we have reconstructed the evolutionary history of the endothelin system, a signaling p...

journal_title：Molecular biology and evolution

authors： Braasch I,Volff JN,Schartl M

更新日期：2009-04-01 00:00:00

abstract：:Vitamin B(12) (cobalamin) is a dietary requirement for humans because it is an essential cofactor for two enzymes, methylmalonyl-CoA mutase and methionine synthase (METH). Land plants and fungi neither synthesize or require cobalamin because they do not contain methylmalonyl-CoA mutase, and have an alternative B(12)-i...

journal_title：Molecular biology and evolution

authors： Helliwell KE,Wheeler GL,Leptos KC,Goldstein RE,Smith AG

更新日期：2011-10-01 00:00:00

abstract：:Spatial distribution and clustering of repetitive elements are extensively studied during the last years, as well as their colocalization with other genomic components. Here we investigate the large-scale features of Alu and LINE1 spatial arrangement in the human genome by studying the size distribution of interrepeat...

journal_title：Molecular biology and evolution

authors： Sellis D,Provata A,Almirantis Y

更新日期：2007-11-01 00:00:00

abstract：:Here, we present a study of the molecular evolution of the pheromone receptor genes (pre-1 and pre-2) in Neurospora taxa with different mating systems. We focus on comparisons between heterothallic and homothallic taxa, reproducing sexually by outcrossing and by intrahaploid selfing, respectively. Our general aim was ...

journal_title：Molecular biology and evolution

authors： Nygren K,Strandberg R,Gioti A,Karlsson M,Johannesson H

更新日期：2012-12-01 00:00:00

abstract：:During the last 60 years, the inversion polymorphism on the third chromosome of Drosophila pseudoobscura has become a case study of the evolution of linked blocks of genes, isolated from each other by the suppression of recombination in heterozygotes for different inversions. Due to its location within inverted region...

journal_title：Molecular biology and evolution

authors： Popadić A,Popadić D,Anderson WW

更新日期：1995-09-01 00:00:00

abstract：:Molecular evolutionary rates within two protistan and three metazoan taxa were estimated using divergence times derived from fossil records. The results indicate that the small-subunit rRNA sequences within Dasycladales (Chlorophyta) and Bacillariophyceae evolved at a rate approximately two to three times faster than ...

journal_title：Molecular biology and evolution

authors： Sorhannus U

更新日期：1996-09-01 00:00:00

abstract：:Vertebrate eye lenses mostly contain two abundant types of proteins, the alpha-crystallins and the beta/gamma-crystallins. In addition, certain housekeeping enzymes are highly expressed as crystallins in various taxa. We now observed an unusual approximately 41-kd protein that makes up 16% to 18% of the total protein ...

journal_title：Molecular biology and evolution

authors： van Rheede T,Amons R,Stewart N,de Jong WW

更新日期：2003-06-01 00:00:00

abstract：:There are many examples of groups (such as birds, bees, mammals, multicellular animals, and flowering plants) that have undergone a rapid radiation. In such cases, where there is a combination of short internal and long external branches, correctly estimating and rooting phylogenetic trees is known to be a difficult p...

journal_title：Molecular biology and evolution

authors： Shavit L,Penny D,Hendy MD,Holland BR

更新日期：2007-11-01 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：:In primates, the craniofacial skeleton and the dentition are marked by high levels of interspecific variation. Despite this, there are few comparative species studies conducted at the molecular level to investigate this functional diversity. We have determined nucleotide sequences of MSX1 and PAX9, two developmental g...

journal_title：Molecular biology and evolution

authors： Perry GH,Verrelli BC,Stone AC

更新日期：2006-03-01 00:00:00

abstract：:The functionality of long noncoding RNAs (lncRNAs) is disputed. In general, lncRNAs are under weak selective pressures, suggesting that the majority of lncRNAs may be nonfunctional. However, although some surveys showed negligible phenotypic effects upon lncRNA perturbation, key biological roles were demonstrated for ...

journal_title：Molecular biology and evolution

authors： Darbellay F,Necsulea A

更新日期：2020-01-01 00:00:00

abstract：:The ability to counter periods of low humidity is an important determinant of distribution range in Drosophila. Climate specialists with low physiological tolerance to desiccation stress are restricted to the tropics and may lack the ability to further increase resistance through evolution. Although the physiological ...

journal_title：Molecular biology and evolution

authors： Telonis-Scott M,Gane M,DeGaris S,Sgrò CM,Hoffmann AA

更新日期：2012-05-01 00:00:00

abstract：:The origin and maintenance of sex remains one of the most debated topics in evolutionary biology. Investigations of the molecular genetic consequences of asexuality, such as direct estimation of mutation and recombination rates in asexual lineages, are critical for explaining the prevalence of sex in nature. In this s...

journal_title：Molecular biology and evolution

authors： Xu S,Omilian AR,Cristescu ME

更新日期：2011-01-01 00:00:00

abstract：:Among mammals, several lineages have independently adapted to a subterranean niche and possess similar phenotypic traits for burrowing (e.g., cylindrical bodies, short limbs, and absent pinnae). Previous research on mole-rats has revealed molecular adaptations for coping with reduced oxygen, elevated carbon dioxide, a...

journal_title：Molecular biology and evolution

authors： Davies KTJ,Bennett NC,Faulkes CG,Rossiter SJ

更新日期：2018-10-01 00:00:00

abstract：:Transposable elements (TEs) make up around 10%-15% of the Drosophila melanogaster genome, but its sibling species Drosophila simulans carries only one third as many such repeat sequences. We do not, however, have an overall view of copy numbers of the various classes of TEs (long terminal repeat [LTR] retrotransposons...

journal_title：Molecular biology and evolution

authors： Vieira C,Lepetit D,Dumont S,Biémont C

更新日期：1999-09-01 00:00:00

abstract：:Heterotachy occurs when the relative evolutionary rates among sites are not the same across lineages. Sequence alignments are likely to exhibit heterotachy with varying severity because the intensity of purifying selection and adaptive forces at a given amino acid or DNA sequence position is unlikely to be the same in...

journal_title：Molecular biology and evolution

authors： Gadagkar SR,Kumar S

更新日期：2005-11-01 00:00:00

abstract：:The human scavenger receptor class B type I (SR-BI and splice variant SR-BII) plays a central role in HDL cholesterol metabolism and represents a candidate gene for a number of related diseases. We examined the genetic diversity of its coding and flanking regions in a sample of 178 chromosomes from individuals of Euro...

journal_title：Molecular biology and evolution

authors： Le Jossec M,Wambach T,Labuda D,Sinnett D,Levy E

更新日期：2004-04-01 00:00:00

abstract：:Enzyme function is strongly affected by temperature, and orthologs from species adapted to different thermal environments often show temperature compensation in kinetic properties. Antarctic notothenioid fishes live in a habitat of constant, extreme cold (-1.86 +/- 2 degrees C), and orthologs of the enzyme A4-lactate ...

journal_title：Molecular biology and evolution

authors： Fields PA,Houseman DE

更新日期：2004-12-01 00:00:00

abstract：:Adaptive evolution at the molecular level can be studied by detecting convergent and parallel evolution at the amino acid sequence level. For a set of homologous protein sequences, the ancestral amino acids at all interior nodes of the phylogenetic tree of the proteins can be statistically inferred. The amino acid sit...

journal_title：Molecular biology and evolution

authors： Zhang J,Kumar S

更新日期：1997-05-01 00:00:00