Results 281 to 290 of about 8,047,140 (326)

Disciplining molecular evolution

Trends in Ecology & Evolution, 1998
Molecular Evolution by W-H. Li Sinauer, 1997. £32.95 hbk (xv+487 pages) ISBN 0 87893 463 4.
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Molecular Evolution of Catalysis

Journal of Theoretical Biology, 2000
In this paper, we consider the evolutionary dynamics of catalytically active species with a distinct genotype-phenotype relationship. Folding landscapes of RNA molecules serve as a paradigm for this relationship with essential neutral properties. The landscape itself is partitioned by phenotypes (realized as RNA secondary structures). To each genotype (
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Molecular evolution and optimization

Antonie van Leeuwenhoek, 1997
Microbial populations (and life) not only evolve, they optimize. The transition from a random, unorganized, lifeless Earth to the present situation, where the Earth is virtually covered with nucleic acids and diverse and complex species, required numerous molecular changes and the integration of metabolic pathways over billions of years.
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Molecular evolution in bacteria

Antonie van Leeuwenhoek, 1995
Recent advances in microbiology and molecular biology have a unifying influence on our understanding of genetic diversity/similarity and evolutionary relationships in microorganisms. This article attempts to unify information from diverse areas such as microbiology, molecular biology, microbial physiology, clay crystal genes, metals-microbe-clay ...
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Molecular evolution

The Journal of Steroid Biochemistry and Molecular Biology, 1991
Joe Felsenstein
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The molecular evolution of trypanosomatidae

2001
In the absence of a fossil record, theories relating to the evolution of protozoa have, for most of the twentieth century, been based on morphological and life cycle data despite their known limitations. However, recent advances in molecular methodology, notably the wide availability of accurate, automated DNA sequencing, have made it possible to ...
J R, Stevens, H A, Noyes, C J, Schofield, W, Gibson   +3 more
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Molecular Evolution of Proteasomes

2002
Proteasomes are large, multisubunit proteases that are found, in one form or another, in all domains of life and play a critical role in intracellular protein degradation. Although they have substantial structural similarity, the proteasomes of bacteria, archaea, and eukaryotes show many differences in architecture and subunit composition. This article
C, Volker, A N, Lupas
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Molecular Evolution of Leptin

General and Comparative Endocrinology, 2001
Leptin, a hormone produced mainly by adipocytes, is involved in the regulation of food intake, metabolism, and reproduction. The objective of this study was to determine the evolutionary relationships of leptin genes. Partial nucleotide sequences of leptin were cloned and sequenced from six mammalian species: large hairy armadillo (Chaetophractus ...
C, Doyon, G, Drouin, V L, Trudeau, T W, Moon   +3 more
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The molecular evolution of development

BioEssays, 1998
Morphological differences between species, from simple single-character differences to large-scale variation in body plans, can be traced to changes in the timing and location of developmental events. This has led to a growing interest in understanding the genetic basis behind the evolution of developmental systems.
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Molecular Evolution of hisB Genes

Journal of Molecular Evolution, 2004
The sixth and eighth steps of histidine biosynthesis are catalyzed by an imidazole glycerol-phosphate (IGP) dehydratase (EC 4.2.1.19) and by a histidinol-phosphate (HOL-P) phosphatase (EC 3.1.3.15), respectively. In the enterobacteria, in Campylobacter jejuni and in Xylella/Xanthomonas the two activities are associated with a single bifunctional ...
M. Brilli, FANI, RENATO
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