The rate of unequal crossing over in the dumpy gene from Drosophila melanogaster.

abstract：:A common polymorphism of the early embryonic histone-gene repeat of Strongylocentrotus purpuratus is a 195-bp insertion within the H4-H2B spacer. The sequence, found as an insert in histone-gene repeats of 6 of 22 individuals screened, is also found at approximately 50 sites elsewhere in the genome of every individual...

journal_title：Journal of molecular evolution

authors： Yager LN,Kaumeyer JF,Lee I,Weinberg ES

更新日期：1987-01-01 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：:Catalyzed polymerization reactions represent a primary anabolic activity of all cells. It can be assumed that early cells carried out such reactions, in which macromolecular catalysts were encapsulated within some type of boundary membrane. In the experiments described here, we show that a template-independent RNA pol...

journal_title：Journal of molecular evolution

authors： Chakrabarti AC,Breaker RR,Joyce GF,Deamer DW

更新日期：1994-12-01 00:00:00

abstract：:We have performed DNA-DNA hybridization experiments among several species of Drosophila using the evolutionarily conserved portion of the genome representing sequences coding for amino acids of proteins. This was done by using as tracer, radioactively labeled complementary DNA that was reverse transcribed from adult m...

journal_title：Journal of molecular evolution

authors： Caccone A,Gleason JM,Powell JR

更新日期：1992-02-01 00:00:00

abstract：:By considering three DNA sequences simultaneously there is sufficient information to recover a full Markov model with three transition matrices from the root to each of the sequences. It is necessary to have relatively long sequences because, for nucleotides, the full model requires 39 parameters that are estimated fr...

journal_title：Journal of molecular evolution

authors： Ota R,Penny D

更新日期：2003-01-01 00:00:00

abstract：:Collagen is an important structural protein and the most abundant protein in mammals. In several research fields, structural analysis of collagens is performed. Fibrillar collagens almost entirely consist of continuous repeats of GXY, where G is glycine, X is often proline or alanine and Y is often hydroxyproline or a...

journal_title：Journal of molecular evolution

authors： Kleinnijenhuis AJ,van Holthoon FL

更新日期：2018-06-01 00:00:00

abstract：:The 70-kDa heat-shock protein (HSP70) constitutes the most conserved protein present in all organisms that is known to date. Based on global alignment of HSP70 sequences from organisms representing all three domains, numerous sequence signatures that are specific for prokaryotic and eukaryotic homologs have been ident...

journal_title：Journal of molecular evolution

authors： Gupta RS,Golding GB

更新日期：1993-12-01 00:00:00

abstract：:All modern mammals contain a distinctive, highly repeated (> or = 50,000 members) family of long interspersed repeated DNA called the L1 (LINE 1) family. While the modern L1 families were derived from a common ancestor that predated the mammalian radiation approximately 80 million years ago, most of the members of the...

journal_title：Journal of molecular evolution

authors： Pascale E,Liu C,Valle E,Usdin K,Furano AV

更新日期：1993-01-01 00:00:00

abstract：:As the origin(s) of life on Earth remains an open question, detailed characteristics about the "last universal ancestor" (LUA) continue to be obscured. Here we provide arguments that strengthen the bacterial-like nature of the LUA. Our view attempts to recreate the evolution of archaeal lipids, the major components of...

journal_title：Journal of molecular evolution

authors： Payandeh J,Pai EF

更新日期：2007-03-01 00:00:00

abstract：:Computational analysis of the hypothetical open reading frame MJ0236 from Methanococcus jannaschii reveals its membership to a family of bacterial and eukaryotic proteins, predicted to be the HMP-P kinases involved in thiamin biosyntheis (ThiD). The eukaryotic members of this family contain a C-terminal extension simi...

journal_title：Journal of molecular evolution

authors： Ouzounis CA,Kyrpides NC

更新日期：1997-12-01 00:00:00

abstract：:The periodic protein collagen is of special interest for the study of the relationship which exists between the structure of a protein and that of its mRNA, because oligopeptides containing glycine, proline (hydroxyproline) and alanine occur with great frequency in it. Collagen is particularly rich in these amino acid...

journal_title：Journal of molecular evolution

authors： Bachra BN

更新日期：1976-08-03 00:00:00

abstract：:DEAD-box proteins are found in all domains of life and participate in almost all cellular processes that involve RNA. The presence of DEAD and Helicase_C conserved domains distinguish these proteins. DEAD-box proteins exhibit RNA-dependent ATPase activity in vitro, and several also show RNA helicase activity. In this ...

journal_title：Journal of molecular evolution

authors： López-Ramírez V,Alcaraz LD,Moreno-Hagelsieb G,Olmedo-Álvarez G

更新日期：2011-04-01 00:00:00

abstract：:Seven new Italian and two new British HTLV-II isolates were obtained from injecting drug users and the entire long terminal repeat (LTR) region was sequenced. Restriction analysis showed that all the Italian isolates are of the IIb subtype, whereas the British isolates are of the IIa subtype. To understand whether the...

journal_title：Journal of molecular evolution

authors： Salemi M,Vandamme AM,Gradozzi C,Van Laethem K,Cattaneo E,Taylor G,Casoli C,Goubau P,Desmyter J,Bertazzoni U

更新日期：1998-05-01 00:00:00

abstract：:The slow-evolving mitochondrial DNAs of plants have potentially conserved information on the phylogenetic branching of the earliest land plants. We present the nad2 gene structures in hornworts and liverworts and in the presumptive earliest-branching vascular land plant clade, the Lycopodiopsida. Taken together with t...

journal_title：Journal of molecular evolution

authors： Pruchner D,Beckert S,Muhle H,Knoop V

更新日期：2002-09-01 00:00:00

abstract：:Translation termination is catalyzed by release factors that recognize stop codons. However, previous works have shown that in some bacteria, the termination process also involves bases around stop codons. Recently, Ito et al. analyzed release factors and identified the amino acids therein that recognize stop codons. ...

journal_title：Journal of molecular evolution

authors： Ozawa Y,Saito R,Washio T,Tomita M

更新日期：2003-06-01 00:00:00

abstract：:The kinetics of synonymous codon change and species divergence is described in a matrix formalism that is equally applicable to all levels of codon degeneracy and all levels of codon or nucleotide bias. Based on the formalism it is possible to calculate the sum of all synonymous substitution rate constants from the ob...

journal_title：Journal of molecular evolution

authors： Berg OG

更新日期：1995-09-01 00:00:00

abstract：:The glycosylation characteristics of the digestive enzyme ribonuclease are summarized. The evolutionary role of this posttranslational modification is discussed and evidence is presented that selection has much influence on the presence or absence of carbohydrate in glycoproteins and on the positions of the carbohydra...

journal_title：Journal of molecular evolution

authors： Beintema JJ

更新日期：1986-01-01 00:00:00

abstract：:We have continued our program aimed at understanding the origin and evolution of the genetic code and the process of protein synthesis by comparing the rates of esterification of 5'-AMP by a series of hydrophobic N-acetylamino acids. The reaction clearly shows differences in reaction rate (AcPhe greater than AcLeu gre...

journal_title：Journal of molecular evolution

authors： Mullins DW Jr,Lacey JC Jr

更新日期：1986-01-01 00:00:00

abstract：:To understand the process and mechanism of protein evolution, it is important to know what types of amino acid substitutions are more likely to be under selection and what types are mostly neutral. An amino acid substitution can be classified as either conservative or radical, depending on whether it involves a change...

journal_title：Journal of molecular evolution

authors： Zhang J

更新日期：2000-01-01 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

abstract：:The 5S ribosomal RNA sequences have been determined for the rhodoplast of the red alga Porphyra umbilicalis and the chloroplast of the conifer Juniperus media. The 5S RNA sequence of the Vicia faba chloroplast is corrected with respect to a previous report. A survey of the known sequences and secondary structures of 5...

journal_title：Journal of molecular evolution

authors： Van den Eynde H,De Baere R,De Roeck E,Van de Peer Y,Vandenberghe A,Willekens P,De Wachter R

更新日期：1988-01-01 00:00:00

abstract：:A few years ago we presented a stationary Markov model of gene evolution according to which only homologous genes from not too divergent species obeying the condition of being stationary may behave as reliable molecular clocks. A compartmentalized model of the nuclear genome in which the genes are distributed in compa...

journal_title：Journal of molecular evolution

authors： Saccone C,Pesole G,Preparata G

更新日期：1989-11-01 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：:Previous observations have indicated that Drosophila DNA contains a component that evolves so rapidly that it fails to hybridize between the DNAs of sibling species. To establish the reality of this component and study its properties, the fraction (about 20%) of Drosophila simulans (Dsim) DNA that fails to hybridize t...

journal_title：Journal of molecular evolution

authors： Werman SD,Davidson EH,Britten RJ

更新日期：1990-03-01 00:00:00

abstract：:We have implemented a routine procedure for screening protein sequences for evidence of intragenic duplications. We tested 163 protein sequences representing 116 superfamilies of unrelated proteins. Twenty superfamilies contain proteins with internal gene duplications. The intragenic duplications detected can be divid...

journal_title：Journal of molecular evolution

authors： Barker WC,Ketcham LK,Dayhoff MO

更新日期：1978-02-21 00:00:00

abstract：:Sequences were obtained from five species of rodents that are orthologous to an H2a histone pseudogene from Mus musculus. The pseudogene is part of the cluster of replication-dependent histone genes found on Mus musculus chromosome 13. Comparative analysis of these five sequences together with the previously published...

journal_title：Journal of molecular evolution

authors： DeBry RW

更新日期：1998-03-01 00:00:00

abstract：:The monotremes, the duck-billed platypus and the echidnas, are characterized by a number of unique morphological characteristics, which have led to the common belief that they represent the living survivors of an ancestral stock of mammals. Analysis of new data from the complete mitochondrial (mt) genomes of a second ...

journal_title：Journal of molecular evolution

authors： Janke A,Magnell O,Wieczorek G,Westerman M,Arnason U

更新日期：2002-01-01 00:00:00

abstract：:The bacterial endosymbionts (Buchnera) from the aphids Rhopalosiphum padi, R. maidis, Schizaphis graminum, and Acyrthosiphon pisum contain the genes for anthranilate synthase (trpEG) on plasmids made up of one or more 3.6-kb units. Anthranilate synthase is the first as well as the rate-limiting enzyme in the tryptopha...

journal_title：Journal of molecular evolution

authors： Rouhbakhsh D,Lai CY,von Dohlen CD,Clark MA,Baumann L,Baumann P,Moran NA,Voegtlin DJ

更新日期：1996-04-01 00:00:00

abstract：:Short interspersed DNA elements (SINEs) amplify by retroposition either by (i) successive waves of amplification from one or a few evolving master genes or by (ii) the generation of new master genes that coexist with their progenitors. Individual, highly conserved, elements of the B1 SINE family were identified from t...

journal_title：Journal of molecular evolution

authors： Kass DH,Raynor ME,Williams TM

更新日期：2000-09-01 00:00:00

abstract：:The codons in four mammalian messenger RNAs (rabbit beta hemoglobin, rat pre-proinsulin, rat pre-growth hormone and human chorionic somatomammotropin) show a predominance of C and G in third nucleotide positions. The C:U ratio is about 2 to 1, and the G:A ratio is about 4 to 1. The possibility is discussed that this d...

journal_title：Journal of molecular evolution

authors： Jukes TH

更新日期：1978-06-20 00:00:00