Molecular evolution of the 5'-flanking regions of the duplicated Amy genes in Drosophila melanogaster species subgroup.

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：:A long-standing enigma concerns the geographic and ecological origins of the intensively studied vinegar fly, Drosophila melanogaster. This globally distributed human commensal is thought to originate from sub-Saharan Africa, yet until recently, it had never been reported from undisturbed wilderness environments that ...

journal_title：Molecular biology and evolution

authors： Sprengelmeyer QD,Mansourian S,Lange JD,Matute DR,Cooper BS,Jirle EV,Stensmyr MC,Pool JE

更新日期：2020-03-01 00:00:00

abstract：:The variation of amino acid substitution rates in proteins depends on several variables. Among these, the protein's expression level, functional category, essentiality, or metabolic costs of its amino acid residues may play an important role. However, the relative importance of each variable has not yet been evaluated...

journal_title：Molecular biology and evolution

authors： Rocha EP,Danchin A

更新日期：2004-01-01 00:00:00

abstract：:DNA supercoiling is the master function that interconnects chromosome structure and global gene transcription. This function has recently been shown to be under strong selection in Escherichia coli. During the evolution of 12 initially identical populations propagated in a defined environment for 20,000 generations, p...

journal_title：Molecular biology and evolution

authors： Crozat E,Winkworth C,Gaffé J,Hallin PF,Riley MA,Lenski RE,Schneider D

更新日期：2010-09-01 00:00:00

abstract：:Genes encoding DNA replication proteins have been frequently exchanged between cells and mobile elements, such as viruses or plasmids. This raises potential problems to reconstruct their history. Here, we combine phylogenetic and genomic context analyses to study the evolution of the replicative minichromosome mainten...

journal_title：Molecular biology and evolution

authors： Krupovic M,Gribaldo S,Bamford DH,Forterre P

更新日期：2010-12-01 00:00:00

abstract：:Finding correct species relationships using phylogeny reconstruction based on molecular data is dependent on several empirical and technical factors. These include the choice of DNA sequence from which phylogeny is to be inferred, the establishment of character homology within a sequence alignment, and the phylogeny a...

journal_title：Molecular biology and evolution

authors： Mugridge NB,Morrison DA,Jäkel T,Heckeroth AR,Tenter AM,Johnson AM

更新日期：2000-12-01 00:00:00

abstract：:Negative genetic regulators of phenotypic heterogeneity, or phenotypic capacitors/stabilizers, elevate population-average fitness by limiting deviation from the optimal phenotype and increase the efficacy of natural selection by enhancing the phenotypic differences among genotypes. Stabilizers can presumably be switch...

journal_title：Molecular biology and evolution

authors： Mo N,Zhang X,Shi W,Yu G,Chen X,Yang JR

更新日期：2020-12-23 00:00:00

abstract：:The genes of tryptophan biosynthesis are arranged and regulated differently in many microorganisms. Comparison of the transcription regulatory regions of the trp operons of several species of enterobacteria reveals that those sequences and structures believed to be essential for repression and attenuation control are ...

journal_title：Molecular biology and evolution

authors： Yanofsky C

更新日期：1984-02-01 00:00:00

abstract：:In termites, as in many social insects, some individuals specialize in colony defense, developing diverse weaponry. As workers of the termite Neocapritermes taracua (Termitidae: Termitinae) age, their efficiency to perform general tasks decreases, while they accumulate defensive secretions and increase their readiness...

journal_title：Molecular biology and evolution

authors： Bourguignon T,Šobotník J,Brabcová J,Sillam-Dussès D,Buček A,Krasulová J,Vytisková B,Demianová Z,Mareš M,Roisin Y,Vogel H

更新日期：2016-03-01 00:00:00

abstract：:Septate junctions (SJs) insure barrier properties and control paracellular diffusion of solutes across epithelia in invertebrates. However, the origin and evolution of their molecular constituents in Metazoa have not been firmly established. Here, we investigated the genomes of early branching metazoan representatives...

journal_title：Molecular biology and evolution

authors： Ganot P,Zoccola D,Tambutté E,Voolstra CR,Aranda M,Allemand D,Tambutté S

更新日期：2015-01-01 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：:The spontaneous deamination of cytosine produces uracil mispaired with guanine in DNA, which will produce a mutation, unless repaired. In all domains of life, uracil-DNA glycosylases (UDGs) are responsible for the elimination of uracil from DNA. Thus, UDGs contribute to the integrity of the genetic information and the...

journal_title：Molecular biology and evolution

authors： Lucas-Lledó JI,Maddamsetti R,Lynch M

更新日期：2011-03-01 00:00:00

abstract：:The genomes of many vertebrates show a characteristic heterogeneous distribution of GC content, the so-called GC isochore structure. The origin of isochores has been explained via the mechanism of GC-biased gene conversion (gBGC). However, although the isochore structure is declining in many mammalian genomes, the het...

journal_title：Molecular biology and evolution

authors： Mugal CF,Arndt PF,Ellegren H

更新日期：2013-07-01 00:00:00

abstract：:The ribosome is responsible for protein synthesis in all living organisms. It is best known to exist around 3.5-3.7 Ga whereat life on Earth inhabited anoxic environment with abundant soluble irons. The RNAs and proteins are the two biopolymers that constitute the ribosome. However, both proteins and RNAs require meta...

journal_title：Molecular biology and evolution

authors： Lin SY,Wang YC,Hsiao C

更新日期：2019-05-01 00:00:00

abstract：:Diverging from the classic paradigm of random gene order in eukaryotes, gene proximity can be leveraged to systematically identify functionally related gene neighborhoods in eukaryotes, utilizing techniques pioneered in bacteria. Current methods of identifying gene neighborhoods typically rely on sequence similarity t...

journal_title：Molecular biology and evolution

authors： Foflonker F,Blaby-Haas CE

更新日期：2021-01-23 00:00:00

abstract：:A combination of three independent biological features, genomic organization, diagnostic amino acid sites, and rare indels, was used to elucidate the phylogeny of the vertebrate serpin (serine protease inhibitor) superfamily. A strong correlation between serpin gene families displaying (1) a conserved exon-intron patt...

journal_title：Molecular biology and evolution

authors： Ragg H,Lokot T,Kamp PB,Atchley WR,Dress A

更新日期：2001-04-01 00:00:00

abstract：:Analyses of diverse eukaryotes reveal that genomes are dynamic, sometimes dramatically so. In numerous lineages across the eukaryotic tree of life, DNA content varies within individuals throughout life cycles and among individuals within species. Discovery of examples of genome dynamism is accelerating as genome seque...

journal_title：Molecular biology and evolution

authors： Parfrey LW,Lahr DJ,Katz LA

更新日期：2008-04-01 00:00:00

abstract：:Much of evolutionary change is mediated at the level of gene expression, yet our understanding of regulatory evolution remains unsatisfying. In light of recent data indicating that transcription factor binding sites undergo substantial turnover between species, we attempt to quantify the process of binding site turnov...

journal_title：Molecular biology and evolution

authors： Dermitzakis ET,Bergman CM,Clark AG

更新日期：2003-05-01 00:00:00

abstract：:Colias eurytheme butterflies display extensive allozyme polymorphism in the enzyme phosphoglucose isomerase (PGI). Earlier studies on biochemical and fitness effects of these genotypes found evidence of strong natural selection maintaining this polymorphism in the wild. Here we analyze the molecular features of this p...

journal_title：Molecular biology and evolution

authors： Wheat CW,Watt WB,Pollock DD,Schulte PM

更新日期：2006-03-01 00:00:00

abstract：:Fish mitochondrial genome (mitogenome) data form a fundamental basis for revealing vertebrate evolution and hydrosphere ecology. Here, we report recent functional updates of MitoFish, which is a database of fish mitogenomes with a precise annotation pipeline MitoAnnotator. Most importantly, we describe implementation ...

journal_title：Molecular biology and evolution

authors： Sato Y,Miya M,Fukunaga T,Sado T,Iwasaki W

更新日期：2018-06-01 00:00:00

abstract：:The emergence of islands has been linked to spectacular radiations of diverse organisms. Although penguins spend much of their lives at sea, they rely on land for nesting, and a high proportion of extant species are endemic to geologically young islands. Islands may thus have been crucial to the evolutionary diversifi...

journal_title：Molecular biology and evolution

authors： Cole TL,Ksepka DT,Mitchell KJ,Tennyson AJD,Thomas DB,Pan H,Zhang G,Rawlence NJ,Wood JR,Bover P,Bouzat JL,Cooper A,Fiddaman SR,Hart T,Miller G,Ryan PG,Shepherd LD,Wilmshurst JM,Waters JM

更新日期：2019-04-01 00:00:00

abstract：:How is adaptability generated in a system composed of interacting cellular machineries, each with a separate and functionally critical job to perform? The machinery for organelle inheritance is precisely one such system, requiring coordination between robust and ancient cellular modules, including the cell cycle, cyto...

journal_title：Molecular biology and evolution

authors： Mast FD,Rachubinski RA,Dacks JB

更新日期：2012-03-01 00:00:00

abstract：:The apparent stasis in the evolution of avian chromosomes suggests that birds may have experienced relatively low rates of gene gain and loss in multigene families. To investigate this possibility and to explore the phenotypic consequences of variation in gene copy number, we examined evolutionary changes in the famil...

journal_title：Molecular biology and evolution

authors： Opazo JC,Hoffmann FG,Natarajan C,Witt CC,Berenbrink M,Storz JF

更新日期：2015-04-01 00:00:00

abstract：:Sherpa population is an ethnic group living in south mountainside of Himalayas for hundreds of years. They are famous as extraordinary mountaineers and guides, considered as a good example for successful adaptation to low oxygen environment in Tibetan highlands. Mitochondrial DNA (mtDNA) variations might be important ...

journal_title：Molecular biology and evolution

authors： Kang L,Zheng HX,Chen F,Yan S,Liu K,Qin Z,Liu L,Zhao Z,Li L,Wang X,He Y,Jin L

更新日期：2013-12-01 00:00:00

abstract：:Horizontal gene transfer threatens the therapeutic success of antibiotics by facilitating the rapid dissemination of resistance alleles among bacterial species. The conjugative mobile element Tn916 provides an excellent context for examining the role of adaptive parasexuality as it carries the tetracycline-resistance ...

journal_title：Molecular biology and evolution

authors： Beabout K,Hammerstrom TG,Wang TT,Bhatty M,Christie PJ,Saxer G,Shamoo Y

更新日期：2015-10-01 00:00:00

abstract：:Homologues of glucosephosphate isomerase (GPI, EC 5.3.1.9) were purified to homogeneity and kinetically characterized from Mytilus edulis and Isognomon alatus, two bivalve molluscs experiencing contrasting thermal environments. The enzyme isolated from I. alatus functions at warmer temperatures (25-35 C) than GPI from...

journal_title：Molecular biology and evolution

authors： Hall JG

更新日期：1985-05-01 00:00:00

abstract：:The third chromosome of Drosophila pseudoobscura is polymorphic for numerous gene arrangements that form classical clines in North America. The polytene salivary chromosomes isolated from natural populations revealed changes in gene order that allowed the different gene arrangements to be linked together by paracentri...

journal_title：Molecular biology and evolution

authors： Wallace AG,Detweiler D,Schaeffer SW

更新日期：2011-08-01 00:00:00

abstract：:Recently, many cases of rapid adaptive evolution, which is characterized by the higher substitution rates of nonsynonymous substitutions to synonymous ones, have been identified in the various genes of venomous and biodefense proteins, including the conger eel galectins, congerins I and II (ConI and ConII). To underst...

journal_title：Molecular biology and evolution

authors： Konno A,Ogawa T,Shirai T,Muramoto K

更新日期：2007-11-01 00:00:00

abstract：:Environmental drivers of biodiversity can be identified by relating patterns of community similarity to ecological factors. Community variation has traditionally been assessed by considering changes in species composition and more recently by incorporating phylogenetic information to account for the relative similarit...

journal_title：Molecular biology and evolution

authors： Parks DH,Beiko RG

更新日期：2012-12-01 00:00:00

abstract：:Alternative splicing (AS) contributes to increased transcriptome and proteome diversity in various eukaryotic lineages. Previous studies showed low levels of conservation of alternatively spliced (cassette) exons within mammals and within dipterans. We report a strikingly different pattern in Caenorhabditis nematodes-...

journal_title：Molecular biology and evolution

authors： Irimia M,Rukov JL,Penny D,Garcia-Fernandez J,Vinther J,Roy SW

更新日期：2008-02-01 00:00:00