Phylogeny of protozoa deduced from 5S rRNA sequences.

abstract：:Gamete-recognition proteins have been shown to evolve by positive selection in diverse organism groups, such as marine invertebrates and mammals, although underlying evolutionary mechanisms driving this rapid divergence are poorly understood. However, several hypotheses have been put forward to explain the observed pa...

journal_title：Journal of molecular evolution

authors： Berlin S,Qu L,Ellegren H

更新日期：2008-11-01 00:00:00

abstract：:In this paper we present a new method for detecting block duplications in a genome. It is more stringent than previous ones in that it requires a more rigorous definition of paralogous genes and that it requires the paralogous proteins on the two blocks to be contiguous. In addition, it provides three criterion choice...

journal_title：Journal of molecular evolution

authors： Cavalcanti AR,Ferreira R,Gu Z,Li WH

更新日期：2003-01-01 00:00:00

abstract：:In this article, we investigated the structural and dynamical evolutionary behaviour of a set of ten thioredoxin proteins as formed by three extant forms and seven resurrected ones in laboratory. Starting from the crystallographic structures, we performed all-atom molecular dynamics simulations and compare the traject...

journal_title：Journal of molecular evolution

authors： Del Galdo S,Alba J,Amadei A,D'Abramo M

更新日期：2019-07-01 00:00:00

abstract：:It has been suggested that inorganic membranes were forerunners of organic membranes at the origin of life. Such membranes, interposed between alkaline fluid in submarine vents and the more acidic Hadean ocean, were thought to house inorganic molecular machines. H+ flowed down the pH gradient (ΔpH) from ocean to vent ...

journal_title：Journal of molecular evolution

authors： Jackson JB

更新日期：2017-08-01 00:00:00

abstract：:The gene content of a mitochondrial (mt) genome, i.e., 37 genes and a large noncoding region (LNR), is usually conserved in Metazoa. The arrangement of these genes and the LNR is generally conserved at low taxonomic levels but varies substantially at high levels. We report here a variation in mt gene content and gene ...

journal_title：Journal of molecular evolution

authors： Shao R,Barker SC,Mitani H,Takahashi M,Fukunaga M

更新日期：2006-08-01 00:00:00

abstract：:Group selection is a matter of acute controversy among evolutionary biologists. The most well-publicized debate in this regard is that between Edward O. Wilson and Richard Dawkins. As is widely known, Edward O. Wilson is very excited about the idea of social selection and eusociality; by contrast Richard Dawkins favor...

journal_title：Journal of molecular evolution

authors： Voskarides K

更新日期：2018-04-01 00:00:00

abstract：:Eight human short tandem repeat polymorphisms (STRs) also known as microsatellites-DYS19, DYS388, DYS390, DYS391, DYS392, DYS393, DYS389I, and DYS389II, mapping in the Y chromosome-were analyzed in two Iberian samples (Basques and Catalans). Allele frequency distributions showed significant differences only for DYS392...

journal_title：Journal of molecular evolution

authors： Pérez-Lezaun A,Calafell F,Seielstad M,Mateu E,Comas D,Bosch E,Bertranpetit J

更新日期：1997-09-01 00:00:00

abstract：:This study was designed to characterize further the nontranscribed intergenic spacers (NTSs) of the 5S rRNA genes of fish and evaluate this marker as a tool for comparative studies. Two members of the closely related North American Great Lakes cisco species complex (Coregonus artedi and C. zenithicus) were chosen for ...

journal_title：Journal of molecular evolution

authors： Sajdak SL,Reed KM,Phillips RB

更新日期：1998-06-01 00:00:00

abstract：:Exon-shuffling is an important mechanism accounting for the origin of many new proteins in eukaryotes. However, its role in the creation of proteins in the ancestor of prokaryotes and eukaryotes is still debatable. Excess of symmetric exons is thought to represent evidence for exon-shuffling since the exchange of exon...

journal_title：Journal of molecular evolution

authors： Vibranovski MD,Sakabe NJ,de Oliveira RS,de Souza SJ

更新日期：2005-09-01 00:00:00

abstract：:One of the key problems in the study of ancient DNA is that of authenticating sequences obtained from PCR amplifications of highly degraded samples. Contamination of ancient samples and postmortem damage to endogenous DNA templates are the major obstacles facing researchers in this task. In particular, the authenticat...

journal_title：Journal of molecular evolution

authors： Helgason A,Pálsson S,Lalueza-Fox C,Ghosh S,Sigurdardóttir S,Baker A,Hrafnkelsson B,Arnadóttir L,Thorsteinsdóttir U,Stefánsson K

更新日期：2007-07-01 00:00:00

abstract：:DNA methylation is one of the many hypotheses proposed to explain the observed deficiency in CpG dinucleotides in a variety of genomes covering a wide taxonomic distribution. Recent studies challenged the methylation hypothesis on empirical grounds. First, it cannot explain why the Mycoplasma genitalium genome exhibit...

journal_title：Journal of molecular evolution

authors： Xia X

更新日期：2003-01-01 00:00:00

abstract：:Gene duplication creates a second copy of a gene either in tandem to the ancestral locus or dispersed to another chromosomal location. When the ancestral copy of a dispersed duplicate is lost from the genome, it creates the appearance that the gene was "relocated" from the ancestral locus to the derived location. Gene...

journal_title：Journal of molecular evolution

authors： Hart MLI,Vu BL,Bolden Q,Chen KT,Oakes CL,Zoronjic L,Meisel RP

更新日期：2018-07-01 00:00:00

abstract：:Computer analyses of various genome sequences revealed the existence of certain periodical patterns of adenine-adenine dinucleotides (ApA). For each genome sequence of 13 eubacteria, 3 archaebacteria, 10 eukaryotes, 60 mitochondria, and 9 chloroplasts, we counted frequencies of ApA dinucleotides at each downstream pos...

journal_title：Journal of molecular evolution

authors： Tomita M,Wada M,Kawashima Y

更新日期：1999-08-01 00:00:00

abstract：:Evaporation of a solution of thymidine plus either the exo or the endo diastereomer of uridine cyclic 2',3'-O, O-phosphorothioate (U greater than p(S) in 1,2-diaminoethane hydrochloride buffer gave the 2',5' and 3',5' isomers of (P-thio) uridylylthymidine (Up(S)dT) in a ratio of 1:2 with a combined yield of about 20%....

journal_title：Journal of molecular evolution

authors： Usher DA,Yee D

更新日期：1979-11-01 00:00:00

abstract：:Studies during the last 20 years have shown that the chromosomes of many organisms, especially those of higher vertebrates, consist of a series of segments having different properties. These can be recognized as, for example, G- and R-bands. Recent studies have indicated that genes tend to lie in the R-bands rather th...

journal_title：Journal of molecular evolution

authors： Sumner AT,de la Torre J,Stuppia L

更新日期：1993-08-01 00:00:00

abstract：:We describe the structure of a gene expressed in the salivary gland cells of the dipteran Chironomus tentans and show that it encodes 1 of the approximately 15 secretory proteins exported by the gland cells. This sp115,140 gene consists of approximately 65 copies of a 42-bp sequence in a central uninterrupted core blo...

journal_title：Journal of molecular evolution

authors： Galli J,Lendahl U,Paulsson G,Ericsson C,Bergman T,Carlquist M,Wieslander L

更新日期：1990-07-01 00:00:00

abstract：:The semen of many primate species coagulates into a mating plug believed to prevent the sperm of subsequent mating events from accessing the ova. The texture of the coagulum varies among species: from a semisoft mass in humans to a firm plug in chimpanzees. In humans, a component of the coagulum, semenogelin I, also i...

journal_title：Journal of molecular evolution

authors： Kingan SB,Tatar M,Rand DM

更新日期：2003-08-01 00:00:00

abstract：:Statistical and biochemical studies of the genetic code have found evidence of nonrandom patterns in the distribution of codon assignments. It has, for example, been shown that the code minimizes the effects of point mutation or mistranslation: erroneous codons are either synonymous or code for an amino acid with chem...

journal_title：Journal of molecular evolution

authors： Freeland SJ,Hurst LD

更新日期：1998-09-01 00:00:00

abstract：:The evolutionary relationships among arthropod hemocyanins and insect hexamerins were investigated. A multiple sequence alignment of 12 hemocyanin and 31 hexamerin subunits was constructed and used for studying sequence conservation and protein phylogeny. Although hexamerins and hemocyanins belong to a highly divergen...

journal_title：Journal of molecular evolution

authors： Burmester T,Massey HC Jr,Zakharkin SO,Benes H

更新日期：1998-07-01 00:00:00

abstract：:Heat induces a number of premutational lesions (for example, the deamination of cytosine to uracil) in DNA and RNA. These kinds of errors occur in resting as well as replicating polynucleotides. However, an increase in temperature also raises the probability of copying error occurring in nucleic acids because of incre...

journal_title：Journal of molecular evolution

authors： Reanney DC,Pressing J

更新日期：1984-01-01 00:00:00

abstract：:The simple codominant expression of the alleles at the self-incompatibility locus ( S) of Solanaceae and their extraordinary spectrum of sequence diversity present an ideal case for understanding the molecular forces that shape the sequence polymorphism of genes involved in recognition reactions. Here, with unpreceden...

journal_title：Journal of molecular evolution

authors： Lu Y

更新日期：2002-06-01 00:00:00

abstract：:We recently sequenced the genome of the first subterrestrial metazoan, the nematode Halicephalobus mephisto. A central finding was a dramatic expansion of genes encoding avrRpt2 induced gene (AIG1), and 70 kDa heat shock (Hsp70) domains. While the role of Hsp70 in thermotolerance is well established, the contribution ...

journal_title：Journal of molecular evolution

authors： Guerin MN,Weinstein DJ,Bracht JR

更新日期：2019-12-01 00:00:00

abstract：:We present two new models of protein sequence evolution based on structural properties of mitochondrial proteins. We compare these models with others currently used in phylogenetic analyses, investigating their performance over both short and long evolutionary distances. We find that our models that incorporate second...

journal_title：Journal of molecular evolution

authors： Liò P,Goldman N

更新日期：2002-04-01 00:00:00

abstract：:Life is based on biopolymers that have the ability to replicate themselves. Here we consider how a self-replicating RNA system may have originated. We consider a reaction system in which polymerization is possible by the addition of an activated monomer to the end of a chain. We suppose that a small fraction of polyme...

journal_title：Journal of molecular evolution

authors： Wu M,Higgs PG

更新日期：2009-11-01 00:00:00

abstract：:The specificity of interaction of amino acids with triplets in the acceptor helix stem of tRNA was investigated by means of a statistical analysis of 1400 tRNA sequences. The imprint of a prototypic genetic code at position 3-5 of the acceptor helix was detected, but only for those major amino acids, glycine, alanine,...

journal_title：Journal of molecular evolution

authors： Möller W,Janssen GM

更新日期：1992-06-01 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：:L1 elements are retrotransposons that have been replicating and evolving in mammalian genomes since before the mammalian radiation. Rattus norvegicus shares the young L1mlvi2 clade only with its sister taxon, Rattus cf moluccarius. Here we compared the L1mlvi2 clade in these recently diverged species and found that it...

journal_title：Journal of molecular evolution

authors： Cabot EL,Angeletti B,Usdin K,Furano AV

更新日期：1997-10-01 00:00:00

abstract：:We examined the cis- vs. trans-splicing status of the mitochondrial group II intron nad1i728 in 439 species (427 genera) of land plants, using both Southern hybridization results (for 416 species) and intron sequence data from the literature. A total of 164 species (157 genera), all angiosperms, was found to have a tr...

journal_title：Journal of molecular evolution

authors： Qiu YL,Palmer JD

更新日期：2004-07-01 00:00:00

abstract：:The DNA sequences of three members of the Alu family of repeated sequences located 5' to the chimpanzee alpha 2 gene have been determined. The base sequences of the three corresponding human Alu family repeats have been previously determined, permitting the comparison of identical Alu family members in human and chimp...

journal_title：Journal of molecular evolution

authors： Sawada I,Willard C,Shen CK,Chapman B,Wilson AC,Schmid CW

更新日期：1985-01-01 00:00:00

abstract：:The sequence of the mitochondrial DNA (mtDNA) molecule of the European hedgehog (Erinaceus europaeus) was determined. The length of the sequence presented is 17,442 nucleotides (nt). The molecule is thus the largest eutherian mtDNA molecule so far reported. The organization of the molecule conforms with that of other ...

journal_title：Journal of molecular evolution

authors： Krettek A,Gullberg A,Arnason U

更新日期：1995-12-01 00:00:00