Discovery and molecular characterization of a plasmid localized in Buchnera sp. bacterial endosymbiont of the aphid Rhopalosiphum padi.

abstract：:Glaucocystophyte algae (sensu Kies, Berl. Deutsch. Bot. Ges. 92, 1979) contain plastids (cyanelles) that retain the peptidoglycan wall of the putative cyano-bacterial endosymbiont; this and other ultrastructural characters (e.g., unstacked thylakoids, phycobilisomes) have suggested that cyanelles are "primitive" plast...

journal_title：Journal of molecular evolution

authors： Helmchen TA,Bhattacharya D,Melkonian M

更新日期：1995-08-01 00:00:00

abstract：:Prediction of the thermodynamic behaviors of biomolecules at high temperature and pressure is fundamental to understanding the role of hydrothermal systems in the origin and evolution of life on the primitive Earth. However, available thermodynamic dataset for amino acids, essential components for life, cannot represe...

journal_title：Journal of molecular evolution

authors： Kitadai N

更新日期：2014-04-01 00:00:00

abstract：:Actin is a highly conserved protein although many isoforms exist. In vertebrates and insects the different actin isoforms can be grouped by their amino acid sequence and tissue-specific gene expression into muscle and nonmuscle actins, suggesting that the different actins may have a functional significance. We ask her...

journal_title：Journal of molecular evolution

authors： Mounier N,Sparrow JC

更新日期：1997-01-01 00:00:00

abstract：:To get deeper insight into the evolution of phosphoenolpyruvate carboxylase we have identified PEPC fragments (about 1,100 bp) of another 12 plants species not yet investigated in this context. The selected plants include one Chlorophyta, two Bryophyta, four Pteridophyta, and five Spermatophyta species. The obtained p...

journal_title：Journal of molecular evolution

authors： Gehrig HH,Heute V,Kluge M

更新日期：1998-01-01 00:00:00

abstract：:The internal transcribed spacer region (ITS) of the nuclear rDNA cistron represents the barcoding locus for Fungi. Intragenomic variation of this multicopy gene can interfere with accurate phylogenetic reconstruction of biological entities. We investigated the amount and nature of this variation for the lichenized fun...

journal_title：Journal of molecular evolution

authors： Lücking R,Lawrey JD,Gillevet PM,Sikaroodi M,Dal-Forno M,Berger SA

更新日期：2014-02-01 00:00:00

abstract：:Scorpion venom toxins were systematically classified according to amino acid composition, insertion/deletion events and sequence. The significance of each comparison method and its outcome is discussed in relation to known immunological and structural properties. A general classification of the toxins is proposed that...

journal_title：Journal of molecular evolution

authors： Dufton MJ,Rochat H

更新日期：1984-01-01 00:00:00

abstract：:A major goal of evolutionary biology is to understand how beneficial mutations translate into increased fitness. Here, we study beneficial mutations that arise in experimental populations of yeast evolved in glucose-rich media. We find that fitness increases are caused by enhanced maximum growth rate (R) that come at ...

journal_title：Journal of molecular evolution

authors： Sezmis AL,Malerba ME,Marshall DJ,McDonald MJ

更新日期：2018-02-01 00:00:00

abstract：:We obtained and studied HIV-1 sequences with a known sampling year from three outbreaks of the HIV-1 epidemic: 141 env V3 (270 nt) sampled between 1984 and 1992 and 117 pol prot/RT (804 nt) sequences sampled between 1986 and 1999 from Dutch homosexual men and injecting drug users (IDUs), as well as 77 env V3 sequences...

journal_title：Journal of molecular evolution

authors： Lukashov VV,Goudsmit J

更新日期：2002-05-01 00:00:00

abstract：:Pax genes encode transcription factors critical for metazoan development. Large-scale gene duplication with subsequent gene losses during vertebrate evolution has resulted in two human genes for each of the Pax1/9, Pax3/7, and Pax4/6 subfamilies and three for the Pax2/5/8 subfamily, compared to one each in the cephalo...

journal_title：Journal of molecular evolution

authors： Short S,Holland LZ

更新日期：2008-06-01 00:00:00

abstract：:We present sequences of five novel RNase A superfamily ribonuclease genes of the bullfrog, Rana catesbeiana. All five genes encode ribonucleases that are similar to Onconase, a cytotoxic ribonuclease isolated from oocytes of R. pipiens. With amino acid sequence data from 14 ribonucleases from three Rana species (R. ca...

journal_title：Journal of molecular evolution

authors： Rosenberg HF,Zhang J,Liao YD,Dyer KD

更新日期：2001-07-01 00:00:00

abstract：:The dominant paradigm in origin of life research is that of an RNA world. However, despite experimental progress towards the spontaneous formation of RNA, the RNA world hypothesis still has its problems. Here, we introduce a novel computational model of chemical reaction networks based on RNA secondary structure and a...

journal_title：Journal of molecular evolution

authors： Hordijk W

更新日期：2017-04-01 00:00:00

abstract：:Response regulators of bacterial sensory transduction systems generally consist of receiver module domains covalently linked to effector domains. The effector domains include DNA binding and/or catalytic units that are regulated by sensor kinase-catalyzed aspartyl phosphorylation within their receiver modules. Most re...

journal_title：Journal of molecular evolution

authors： Pao GM,Saier MH Jr

更新日期：1995-02-01 00:00:00

abstract：:Energised by the protonmotive force and with the intervention of inorganic catalysts, at base Life reacts hydrogen from a variety of sources with atmospheric carbon dioxide. It seems inescapable that life emerged to fulfil the same role (i.e., to hydrogenate CO(2)) on the early Earth, thus outcompeting the slow geoche...

journal_title：Journal of molecular evolution

authors： Nitschke W,Russell MJ

更新日期：2009-11-01 00:00:00

abstract：:Two competing effects at two vastly different scales may explain collagen's current translation length. The necessity to have long molecules for maintaining mechanical integrity at the organism and supraorganism scales may be limited by the need to have small molecules capable of robust self-assembly at the nanoscale....

journal_title：Journal of molecular evolution

authors： Layton BE,D'Souza AJ,Dampier W,Zeiger A,Sabur A,Jean-Charles J

更新日期：2008-06-01 00:00:00

abstract：:We have studied the metal-ion catalysis of a number of reactions of the isomers of ImpGpG on a poly(C) template. In the absence of a catalytic metal ion, oligomers at least up to (pG)20 are obtained from the ImpGpG isomers in a 1-methylimidazole buffer. The Pb2+ ion improves the yield of longer oligomers and changes s...

journal_title：Journal of molecular evolution

authors： Lohrmann R,Bridson PK,Orgel LE

更新日期：1981-01-01 00:00:00

abstract：:Algae are a heterogeneous group of photosynthetic eukaryotes traditionally separated into three major subdivisions: rhodophytes, chlorophytes, and chromophytes. The evolutionary origin of rhodophytes or red algae and their links to other photosynthetic and nonphotosynthetic eukaryotes have been a matter of much contro...

journal_title：Journal of molecular evolution

authors： Liaud MF,Valentin C,Martin W,Bouget FY,Kloareg B,Cerff R

更新日期：1994-04-01 00:00:00

abstract：:We report the sequence of A/B.L1, a tightly linked pair of genes from the A and B chorion families in Bombyx mori. Comparison with the previously characterized A/B.L11 and A/B.L12 pairs from the same species reveals moderate sequence divergence, which is clearly nonuniform. Although the average divergence of A/B.L12 f...

journal_title：Journal of molecular evolution

authors： Tsitilou SG,Kafatos FC

更新日期：1989-11-01 00:00:00

abstract：:We have further characterized the Asian genotypes (Types 2 and 7) and subtypes of JC virus (JCV). Urine samples from 224 individuals with Han and Mongolian populations were collected in five regions in eastern China: Kunming, Chengdu, Shenyang, Chifeng, and Manzhouli. Also, 99 urine samples were collected from coastal...

journal_title：Journal of molecular evolution

authors： Cui X,Wang JC,Deckhut A,Joseph BC,Eberwein P,Cubitt CL,Ryschkewitsch CF,Agostini HT,Stoner GL

更新日期：2004-05-01 00:00:00

abstract：:Here we analyze the molecular evolution of the beta-esterase gene cluster in the Drosophila genus using the recently released genome sequences of 12 Drosophila species. Molecular evolution in this small cluster is noteworthy because it contains contrasting examples of the types and stages of loss of gene function. Spe...

journal_title：Journal of molecular evolution

authors： Robin C,Bardsley LM,Coppin C,Oakeshott JG

更新日期：2009-07-01 00:00:00

abstract：:A general correlation between neural expression and negative charge in isozymes suggests charge represents an adaptation to the neural environment. Interestingly, a notable exception exists in teleost fish. Two cytosolic malate dehydrogenase (MDH) isozymes have different spatial expression patterns in certain fishes: ...

journal_title：Journal of molecular evolution

authors： Merrit TJ,Quattro M

更新日期：2003-03-01 00:00:00

abstract：:A fundamental paradox motivates the study of plant mitochondrial genomics: the mutation rate is very low (lower than in the nucleus) but the rearrangement rate is high. A landmark paper published in Journal of Molecular Evolution in 1988 established these facts and revealed the paradox. Jeffrey Palmer and Laura Herbon...

journal_title：Journal of molecular evolution

authors： Christensen AC

更新日期：2021-01-24 00:00:00

abstract：:Langley and Fitch (1974, 1976) have shown that the pattern of nucleotide substitutions in proteins is inconsistent with a Poisson process with constant rate. From this they conclude that the rate is temporally heterogeneous. It is pointed out in this note that a process which is temporally homogeneous but not a Poisso...

journal_title：Journal of molecular evolution

authors： Gillespie JH,Langley CH

更新日期：1979-06-08 00:00:00

abstract：:Explicit evaluation of the accuracy and power of maximum likelihood and Bayesian methods for detecting site-specific positive Darwinian selection presents a challenge because selective consequences of single amino acid changes are generally unknown. We exploited extensive molecular and functional characterization of a...

journal_title：Journal of molecular evolution

authors： Cavatorta JR,Savage AE,Yeam I,Gray SM,Jahn MM

更新日期：2008-11-01 00:00:00

abstract：:Factors involved in the selection of the 20 protein L-alpha-amino acids during chemical evolution and the early stages of Darwinian evolution are discussed. The selection is considered on the basis of the availability in the primitive ocean, function in proteins, the stability of the amino acid and its peptides, stabi...

journal_title：Journal of molecular evolution

authors： Weber AL,Miller SL

更新日期：1981-01-01 00:00:00

abstract：:We described previously a family of dispersed palindromic sequences highly repeated in Escherichia coli and Salmonella typhimurium genomes. These sequences, called PU (palindromic units), are located outside structural genes. We report here observations suggesting that PU may have a role in bacterial speciation. ...

journal_title：Journal of molecular evolution

authors： Gilson E,Perrin D,Saurin W,Hofnung M

更新日期：1987-01-01 00:00:00

abstract：:The entire mitochondrial DNA control region (mtDNA D-loop) was sequenced in the seven extant species of Alectoris partridges. The D-loop length is very conserved (1155 +/- 2 nucleotides), and substitution rates are lower than for the mitochondrial cytochrome b gene of the same species, on average. Comparative analyses...

journal_title：Journal of molecular evolution

authors： Randi E,Lucchini V

更新日期：1998-10-01 00:00:00

abstract：:We examined the nucleotide and amino acid sequence variation of the cytochrome c oxidase subunit II (COII) gene from 25 primates (4 hominoids, 8 Old World monkeys, 2 New World monkeys, 2 tarsiers, 7 lemuriforms, 2 lorisiforms). Marginal support was found for three phylogenetic conclusions: (1) sister-group relationshi...

journal_title：Journal of molecular evolution

authors： Adkins RM,Honeycutt RL

更新日期：1994-03-01 00:00:00

abstract：:The first intron of the gene encoding one of the alcohol dehydrogenase isoenzymes (ADH-1) in Ceratitis capitata is highly polymorphic in size. Five size variants of this intron were isolated from different strains and populations and characterized. Restriction map and sequence analysis showed that the intron size poly...

journal_title：Journal of molecular evolution

authors： Gomulski LM,Brogna S,Babaratsas A,Gasperi G,Zacharopoulou A,Savakis C,Bourtzis K

更新日期：2004-06-01 00:00:00

abstract：:This study examines the diverse maximum wavelength absorption (lambdamax) found in crayfishes (Decapoda: Cambaridae and Parastacidae) and the associated genetic variation in their opsin locus. We measured the wavelength absorption in the photoreceptors of six species that inhabit environments of different light intens...

journal_title：Journal of molecular evolution

authors： Crandall KA,Cronin TW

更新日期：1997-11-01 00:00:00

abstract：:Complement control proteins (CCPs) contain repeated protein domains, short consensus repeats (SCRs), which must be relevant to diverse functions such as complement activation, coagulation, viral binding, fetal implantation, and self-nonself recognition. Although SCRs share some discontinuous and imperfect motifs, ther...

journal_title：Journal of molecular evolution

authors： McLure CA,Dawkins RL,Williamson JF,Davies RA,Berry J,Natalie LJ,Laird R,Gaudieri S

更新日期：2004-08-01 00:00:00