Results 221 to 230 of about 262,011 (266)
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Analysis of an evolutionary species–area relationship
Nature, 2000Large islands typically have more species than comparable smaller islands. Ecological theories, the most influential being the equilibrium theory of island biogeography, explain the species-area relationship as the outcome of the effect of area on immigration and extinction rates.
J B, Losos, D, Schluter
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Glucoamylase structural, functional, and evolutionary relationships
Proteins: Structure, Function, and Genetics, 1997To correlate structural features with glucoamylase properties, a structure-based multisequence alignment was constructed using information from catalytic and starch-binding domain models. The catalytic domain is composed of three hydrophobic folding units, the most labile and least hydrophobic of them being missing in the most stable glucoamylase.
P M, Coutinho, P J, Reilly
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Evolutionary relationships of the carbamoylphosphate synthetase genes
Journal of Molecular Evolution, 1995Carbamoylphosphate is a common intermediate in the metabolic pathways leading to the biosynthesis of arginine and pyrimidines. The amino acid sequences of all available proteins that catalyze the formation of carbamoylphosphate were retrieved from Genbank and aligned to estimate their mutual phylogenetic relations.
van den Hoff, M. J. +3 more
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The characterization and evolutionary relationships of a trypanosomal thiolase
International Journal for Parasitology, 2011Thiolases are enzymes that remove an acetyl-coenzyme A group from acyl-CoA in the catabolic β-oxidation of fatty acids, or catalyse the reverse condensation reaction for anabolic processes such as the biosynthesis of sterols and ketone bodies. In humans, six homologous isoforms of thiolase have been described, differing from each other in sequence ...
Muriel, Mazet +8 more
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The evolutionary relationships of man and orang-utans
Nature, 1984Man shares uniquely few morphological features with either the chimpanzee or the gorilla, whereas there are many features that suggest affinities between man and the orang-utan, to whom the fossil Sivapithecus appears to be closely related. If these are unique features, inclusion of Sivapithecus, man and the orang-utan in a single clade, distinct from ...
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Possible evolutionary relationships of the nitrogenase proteins
Journal of Molecular Evolution, 1976Comparisons of the amino acid compositions of the nitrogenase proteins from different organisms and their correlation with cross-reactivities and taxonomical data suggest an evolution within bacterial genomes rather than within plasmids. Comparisons of the amino acid compositions of nitrogenases and other ATP-ases show similarities which might be due ...
D, Kleiner +3 more
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Stegodontidae: evolutionary relationships
1996Abstract The family Stegodontidae is composed of the two genera, Stegolophodon and Stegodon. This family first appeared in Asia during the early Miocene and became one of the dominant faunas of Asia during the Pliocene and Pleistocene. Because of elephant-like similarities, the systematic position of the stegodontids has developed with ...
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Evolutionary Relationships Among the Oryza Species
2018Despite being highly studied, the evolutionary relationships in the Oryza genus have remained inconsistent and inconclusive. The origin and domestication history of Asian rice has particularly remained contentious. This chapter discusses the evolutionary relationships between various species in the Oryza genus, with a special focus on the application ...
Wambugu, Peterson W. +3 more
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Evolutionary relationships among the malate dehydrogenases
Trends in Biochemical Sciences, 1988Abstract The three-dimensional structures and elements essential for catalysis are conserved between mitochondrial and cytoplasmic forms of malate dehydrogenase in eukaryotic cells even though these isozymes are only marginally related at the level of primary structure.
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Evolutionary relationships among photosynthetic bacteria
Photosynthesis Research, 2003To understand the evolution of photosynthetic bacteria it is necessary to understand how the main groups within Bacteria have evolved from a common ancestor, a critical issue that has not been resolved in the past. Recent analysis of shared conserved inserts or deletions (indels) in protein sequences has provided a powerful means to resolve this long ...
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