Abstract:
:We have determined the genomic structure of an integrin beta-subunit gene from the coral, Acropora millepora. The coding region of the gene contains 26 introns, spaced relatively uniformly, and this is significantly more than have been found in any integrin beta-subunit genes from higher animals. Twenty-five of the 26 coral introns are also found in a beta-subunit gene from at least one other phylum, indicating that the coral introns are ancestral. While there are some suggestions of intron gain or sliding, the predominant theme seen in the homologues from higher animals is extensive intron loss. The coral baseline allows one to infer that a number of introns found in only one phylum of higher animals result from frequent intron loss, as opposed to the seemingly more parsimonious alternative of isolated intron gain. The patterns of intron loss confirm results from protein sequences that most of the vertebrate genes, with the exception of beta4, belong to one of two beta subunit families. The similarity of the patterns within each of the beta1,2,7 and beta3,5,6,8 groups indicates that these gene structures have been very stable since early vertebrate evolution. Intron loss has been more extensive in the invertebrate genes, and obvious patterns have yet to emerge in this more limited data set.
journal_name
J Mol Evoljournal_title
Journal of molecular evolutionauthors
Schmitt DM,Brower DLdoi
10.1007/s002390010257keywords:
subject
Has Abstractpub_date
2001-12-01 00:00:00pages
703-10issue
6eissn
0022-2844issn
1432-1432journal_volume
53pub_type
杂志文章abstract::The heterotrophic theory of the origin of life is the only proposal available with experimental support. This comes from the ease of prebiotic synthesis under strongly reducing conditions. The prebiotic synthesis of organic compounds by reduction of CO(2) to monomers used by the first organisms would also be considere...
journal_title:Journal of molecular evolution
pub_type: 杂志文章,评审
doi:
更新日期:1999-10-01 00:00:00
abstract::The efficiency of obtaining the correct tree by the maximum likelihood method (Felsenstein 1981) for inferring trees from DNA sequence data was compared with trees obtained by distance methods. It was shown that the maximum likelihood method is superior to distance methods in the efficiency particularly when the evolu...
journal_title:Journal of molecular evolution
pub_type: 评论,杂志文章
doi:10.1007/BF02101285
更新日期:1991-05-01 00:00:00
abstract::In this study, a new strategy for the selection of aptamers against small-molecule target was established using gold nanoparticles (AuNPs) as the separation matrix and Zinc(II)-Protoporphyrin IX (ZnPPIX) as the target molecule without the immobilization step due to the absorption of ssDNA on AuNPs. The progress of the...
journal_title:Journal of molecular evolution
pub_type: 杂志文章
doi:10.1007/s00239-019-09905-4
更新日期:2019-09-01 00:00:00
abstract::The stability of helical structures formed by polyuridylic acid with nucleosides and nucleotides derived from adenosine is not significantly affected by replacing hydroxyl groups by hydrogen, amino, or azido functions. Stability is affected by the position of the phosphate group. ...
journal_title:Journal of molecular evolution
pub_type: 杂志文章
doi:10.1007/BF01738882
更新日期:1976-06-23 00:00:00
abstract::Cyclooxygenase (COX) enzymatically converts arachidonic acid into prostaglandin G/H in animals and has importance during pregnancy, digestion, and other physiological functions in mammals. COX genes have mainly been described from vertebrates, where gene duplications are common, but few studies have examined COX in in...
journal_title:Journal of molecular evolution
pub_type: 杂志文章
doi:10.1007/s00239-015-9670-3
更新日期:2015-04-01 00:00:00
abstract::The availability of fast and accurate sequencing procedures along with the use of PCR has led to a proliferation of studies of variability at the molecular level in populations. Nevertheless, it is often impractical to examine long genomic stretches and a large number of individuals at the same time. In order to optim...
journal_title:Journal of molecular evolution
pub_type: 杂志文章
doi:10.1007/BF00173194
更新日期:1995-12-01 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
pub_type: 杂志文章
doi:10.1007/BF00173175
更新日期:1995-12-01 00:00:00
abstract::Using gene genealogies constructed from gene sequence data, we show that both the mucosal and cutaneous papillomaviruses (PV)-supergroups A and B-appear to have been transmitted through susceptible populations faster than exponentially. The data and methods involved (1) examining the PV database for phylogenetic signa...
journal_title:Journal of molecular evolution
pub_type: 杂志文章
doi:10.1007/pl00006136
更新日期:1997-02-01 00:00:00
abstract::TT virus (TTV) has a remarkable genetic heterogeneity. To study TTV evolution, phylogenetic analyses were performed on 739 DNA sequences mapping in the N22 region of ORF1. Analysis of neighbor-joining consensus trees shows significant differences between DNA and protein phylogeny. Median joining networks phylogenetic ...
journal_title:Journal of molecular evolution
pub_type: 杂志文章
doi:10.1007/s00239-002-2352-y
更新日期:2002-11-01 00:00:00
abstract::A new type of repeat unit was isolated from Balbiani ring 1 of Chironomus pallidivittatus and designated BR1 beta repeat. It consists of a constant and a subrepeated part, like previously described units belonging to the core blocks of the BR genes. The subrepeated part contains 10-codon subrepeats with an arrangement...
journal_title:Journal of molecular evolution
pub_type: 杂志文章
doi:10.1007/BF02101191
更新日期:1988-01-01 00:00:00
abstract::One of the pupal cuticle protein (PCP) genes has been found within an intron of a Drosophila housekeeping gene (the Gart locus) that encodes three enzymes involved in the purine pathway. This intronic gene has been described as a gene within a gene, and the gene is now called a "nested" gene. Because the intronic PCP ...
journal_title:Journal of molecular evolution
pub_type: 杂志文章
doi:10.1007/BF02603074
更新日期:1989-05-01 00:00:00
abstract::Three measures of sequence dissimilarity have been compared on a computer-generated model system in which substitutions in random sequences were made at randomly selected sites and the replacement character was chosen at random from the set of characters different from the original occupant of the site. The three meas...
journal_title:Journal of molecular evolution
pub_type: 杂志文章
doi:10.1007/BF02602925
更新日期:1989-12-01 00:00:00
abstract::Microsatellite DNA sequences have become the dominant source of nuclear genetic markers for most applications. It is important to investigate the basis of variation between alleles and to know if current assumptions about the mechanisms of microsatellite mutation (that is to say, variations involving simple changes in...
journal_title:Journal of molecular evolution
pub_type: 杂志文章
doi:10.1007/pl00006151
更新日期:1997-03-01 00:00:00
abstract::In the previous three reports in this series we demonstrated that the EF-hand family of proteins evolved by a complex pattern of gene duplication, transposition, and splicing. The dendrograms based on exon sequences are nearly identical to those based on protein sequences for troponin C, the essential light chain myos...
journal_title:Journal of molecular evolution
pub_type: 杂志文章
doi:10.1007/BF02406723
更新日期:1993-05-01 00:00:00
abstract::We outline a method for estimating quantitatively the influence of point mutations and selection on the frequencies of codons and amino acids. We show how the mutation rate, i.e., the rate of amino acid replacement due to point mutation, can be affected by the codon usage as well as by the rates of the involved base e...
journal_title:Journal of molecular evolution
pub_type: 杂志文章
doi:10.1007/BF02102357
更新日期:1984-01-01 00:00:00
abstract::Cytochrome proteins perform a broad spectrum of biological functions ranging from oxidative metabolism to electron transport and are thus essential to all organisms. The b-type cytochrome proteins bind heme noncovalently, are expressed in many different forms and are localized to various cellular compartments. We repo...
journal_title:Journal of molecular evolution
pub_type: 杂志文章
doi:10.1007/BF00160314
更新日期:1995-10-01 00:00:00
abstract::The previously given systems-theoretic model for the synthesis of optical antipodes (AD and AL) in strongly asymmetric yield, which shows mono-bistable behaviour depending on the degree of "openess" of the chemical reaction system is reconsidered for two equal compartments (subscripts 1 and 2 on A) with coupling by di...
journal_title:Journal of molecular evolution
pub_type: 杂志文章
doi:10.1007/BF01732292
更新日期:1975-10-29 00:00:00
abstract::The relationships of genome organization among elongated (rod-shaped and filamentous) plant viruses have been analyzed. Sequences in coding and noncoding regions of barley stripe mosaic virus (BSMV) RNAs 1, 2, and 3 were compared with those of the monopartite RNA genomes of potato virus X (PVX), white clover mosaic vi...
journal_title:Journal of molecular evolution
pub_type: 杂志文章
doi:10.1007/BF02106181
更新日期:1989-07-01 00:00:00
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
pub_type: 杂志文章
doi:10.1007/BF00170674
更新日期:1995-08-01 00:00:00
abstract::Cosmochemical considerations suggest various potential sources for the accumulation of organic matter on Mars. However the Viking Molecular Analysis did not indicate any indigenous organic compounds on the surface of Mars. Their disappearance from the top layer is most likely caused by the combined action of the high ...
journal_title:Journal of molecular evolution
pub_type: 杂志文章
doi:10.1007/BF01732374
更新日期:1979-12-01 00:00:00
abstract::We have analyzed the gene that encodes receptor tyrosine kinase (RTK) from the marine sponge Geodia cydonium, which belongs to the most ancient and simple metazoan groups, the Porifera. RTKs are enzymes found only in metazoa. The sponge gene contains two introns in the extracellular part of the protein. However, the r...
journal_title:Journal of molecular evolution
pub_type: 杂志文章
doi:10.1007/pl00006141
更新日期:1997-03-01 00:00:00
abstract::The mitochondrial genome of yeast (S. cerevisiae or S. carlsbergensis) appears to be formed by 60-70 genetic units, each one of which is formed by (1) a GC-rich sequence, possibly having a regulatory role; (2) a gene, and (3) an AT-rich spacer, which probably is not transcribed. Recombination in this genome appears to...
journal_title:Journal of molecular evolution
pub_type: 杂志文章
doi:10.1007/BF01796120
更新日期:1976-12-31 00:00:00
abstract::Liverworts are well supported as the sister group to all other land plants (embryophytes) by molecular data. Observations strongly supporting this earliest dichotomy in embryophyte evolution are the strikingly different introns occurring in the mitochondrial DNAs of liverworts versus non-liverwort embryophytes (NLE), ...
journal_title:Journal of molecular evolution
pub_type: 杂志文章
doi:10.1007/s00239-010-9348-9
更新日期:2010-05-01 00:00:00
abstract::We analyzed precursor messenger RNAs (pre-mRNAs) of 12 eukaryotic species. In each species, three groups of highly expressed genes, ribosomal proteins, heat shock proteins, and amino-acyl tRNA synthetases, were compared with a control group (randomly selected genes). The purine-pyrimidine (R-Y) composition of pre-mRNA...
journal_title:Journal of molecular evolution
pub_type: 杂志文章
doi:10.1007/s00239-006-0135-6
更新日期:2007-02-01 00:00:00
abstract::Membrane proteins that transport ATP and ADP have been identified in mitochondria, plastids, and obligate intracellular parasites. The mitochondrial ATP/ADP transporters are derived from a broad-specificity transport family of eukaryotic origin, whereas the origin of the plastid/parasite ATP/ADP translocase is more el...
journal_title:Journal of molecular evolution
pub_type: 杂志文章
doi:10.1007/s00239-002-2387-0
更新日期:2003-02-01 00:00:00
abstract::We propose a genealogy-sampling algorithm, Sequential Markov Ancestral Recombination Tree (SMARTree), that provides an approach to estimation from SNP haplotype data of the patterns of coancestry across a genome segment among a set of homologous chromosomes. To enable analysis across longer segments of genome, the seq...
journal_title:Journal of molecular evolution
pub_type: 杂志文章
doi:10.1007/s00239-014-9620-5
更新日期:2014-05-01 00:00:00
abstract::In this work detailed statistics on ancestral gene duplication and gene conservation in completely sequenced cellular genomes are presented. Analysis of open reading frame (ORF) products having simultaneous matches in several distinct organisms showed a significant correlation between duplication and conservation. Sys...
journal_title:Journal of molecular evolution
pub_type: 杂志文章
doi:10.1007/pl00006580
更新日期:1999-11-01 00:00:00
abstract::It has been argued that the common ancestor of about 75% of all dicots possessed an S-RNase-based gametophytic self-incompatibility (GSI) system. S-RNase genes should thus be found in most plant families showing GSI. The S-RNase gene (or a duplicate) may also acquire a new function and thus genes belonging to the S-RN...
journal_title:Journal of molecular evolution
pub_type: 杂志文章
doi:10.1007/s00239-008-9137-x
更新日期:2008-08-01 00:00:00
abstract::A comparison of mitochondrial DNA sequences was undertaken for two genes among orangutans from Borneo and Sumatra. The distribution of haplotypes among 42 individuals for NADH dehydrogenease subunit 3 and 39 individuals for cytochrome B was used to infer population structure. The haplotypes among all Bornean orangutan...
journal_title:Journal of molecular evolution
pub_type: 杂志文章
doi:10.1007/s002390010110
更新日期:2000-11-01 00:00:00
abstract::The amino acid sequences of 22 alpha-amylases from family 13 of glycosyl hydrolases were analyzed with the aim of revealing the evolutionary relationships between the archaeal alpha-amylases and their eubacterial and eukaryotic counterparts. Two evolutionary distance trees were constructed: (i) the first one based on ...
journal_title:Journal of molecular evolution
pub_type: 杂志文章
doi:10.1007/pl00006486
更新日期:1999-04-01 00:00:00