Journal of Molecular Evolution
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The comparative aspects of cell wall chemistry in the green algae (chlorophyta)
Journal of Molecular Evolution - Tập 15 - Trang 1-12 - 1980
The origin of a cell wall was an event of fundamental importance in the evolution of plants. In the green algae, cell walls apparently had independent origins in at least three lines of evolution. In this paper, the components of the cell wall were determined and compared in four filamentous green algae representing the charophycean, chlorophycean and ulvacean evolutionary lines. The walls of all ......
Evolution of chorion structural genes and regulatory mechanisms in two wild silkmoths: A preliminary analysis
Journal of Molecular Evolution - Tập 27 - Trang 187-193 - 1988
We report a preliminary analysis of structural and regulatory evolution of the A and B chorion gene families in two wild silkmoths,Antheraea pernyi andAntheraea polyphemus. Homospecific and heterospecific dot hybridizations were performed between previously characterizedA. polyphemus complementary DNA clones and total or stage-specific follicular mRNAs from the two species. The hybridization patte......
Genetic Variation in a Cline in a Living Intertidal Snail Arose in the Neogastropoda over 100 Million Years Ago
Journal of Molecular Evolution - Tập 58 - Trang 97-105 - 2004
To understand how species adapt and evolve it is necessary to appreciate the relationship between genetic variation and the environment. Here, the fossil record and molecular data from different lineages of the marine Gastropoda are used to understand the evolution of genetic variations found in the nuclear gene for mitochondrial malate dehydrogenase (mMDH; EC 1.1.1.37) in the living intertidal Mu......
Positively Selected Sites in the Arabidopsis Receptor-Like Kinase Gene Family
Journal of Molecular Evolution - Tập 61 - Trang 325-332 - 2005
We analyze members of the receptor-like kinase (RLK) gene family in Arabidopsis thaliana for positive selection. Likelihood analyses find evidence for positive selection in 12 of the 52 RLK family sequences groups. These 12 groups represent 97 of the 403 sequences analyzed. The majority of genes in groups subject to positive selection have not been functionally characterized, but sites under selec......
Evidence of Positive Darwinian Selection in Putative Meningococcal Vaccine Antigens
Journal of Molecular Evolution - Tập 61 - Trang 90-98 - 2005
Meningococcal meningitidis is a life-threatening disease. In Europe and the United States the majority of cases are caused by virulent meningococcal strains belonging to serogroup B. Presently there is no effective vaccine against serogroup B strains, as traditional vaccine antigens such as polysaccharide capsules are unusable as they lead to autoimmunity. The year 2000 saw the publication of the ......
An Unusual Recent Expansion of the C-Terminal Domain of RNA Polymerase II in Primate Malaria Parasites Features a Motif Otherwise Found Only in Mammalian Polymerases
Journal of Molecular Evolution - Tập 68 - Trang 706-714 - 2009
The tail of the enzyme RNA polymerase II is responsible for integrating the diverse events of gene expression in eukaryotes and is indispensable for life in yeast, fruit flies, and mice. The tail features a C-terminal domain (CTD), which is comprised of tandemly repeated Y1-S2-P3-T4-S5-P6-S7 amino acid heptads that are highly conserved across evolutionary lineages, with all mammalian polymerases f......
Searching tRNA sequences for relatedness to aminoacyl-tRNA synthetase families
Journal of Molecular Evolution - - 1995
Characterization and Evolution of mariner Elements from Closely Related Species of Fruit Flies (Diptera: Tephritidae)
Journal of Molecular Evolution - Tập 46 - Trang 288-298 - 1998
Mariner elements were amplified using the polymerase chain reaction from two species of tephritid flies, Ceratitis rosa and Trirhithrum coffeae. The sequences were ∼1.3 kb in length. None of these elements appeared to be functional, as in every case the open reading frame (ORF) was disrupted by the presence of frameshifts or stop codons. These elements, Crmar1 and Tcmar1,......
On investigating the statistical properties of the populous path algorithm by computer simulation
Journal of Molecular Evolution - Tập 11 - Trang 75-85 - 1978
Goodman et al.'s (1974) populous path algorithm for estimating hidden mutational change in protein evolution is designed to be used as an adjunct to the maximum parsimony method. When the algorithm is so used, the augmented maximum parsimony distances, far from being overestimates, are underestimates of the actual number of nucleotide substitutions which occur in Tateno and Nei's (1978) computer s......
Structural and phylogenetic analysis of the chicken ventricular myosin heavy chain rod
Journal of Molecular Evolution - Tập 33 - Trang 357-366 - 1991
We have isolated and characterized five overlapping clones that encompass 3.2 kb and encode a part of the short subfragment 2, the hinge, and the light meromyosin regions of the myosin heavy chain rod as well as 143 bp of the 3′ untranslated portion of the mRNA. Northern blot analysis showed expression of this mRNA mainly in ventricular muscle of the adult chicken heart, with trace levels detected......
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