Results 11 to 20 of about 1,852,937 (255)

DNA Polymerases Engineered by Directed Evolution to Incorporate Nonstandard Nucleotides

Frontiers in Microbiology, 2014
DNA polymerases have evolved for billions of years to accept natural nucleoside triphosphate substrates with high fidelity and to exclude closely related structures, such as the analogous ribonucleoside triphosphates. However, polymerases that can accept
Roberto eLaos, John Michael Thomson, Steven Albert Benner   +2 more
doaj   +1 more source

Major Changes in Plastid Protein Import and the Origin of the Chloroplastida

iScience, 2020
Summary: Core components of plastid protein import and the principle of using N-terminal targeting sequences are conserved across the Archaeplastida, but lineage-specific differences exist.
Michael Knopp, Sriram G. Garg, Maria Handrich, Sven B. Gould   +3 more
doaj   +1 more source

Microbial Community Structure Driven by a Volcanic Gradient in Glaciers of the Antarctic Archipelago South Shetland

Microorganisms, 2021
It has been demonstrated that the englacial ecosystem in volcanic environments is inhabited by active bacteria. To know whether this result could be extrapolated to other Antarctic glaciers and to study the populations of microeukaryotes in addition to ...
Eva García-Lopez, Sandra Serrano, Miguel Angel Calvo, Sonia Peña Perez, Silvia Sanchez-Casanova, Laura García-Descalzo, Cristina Cid   +6 more
doaj   +1 more source

The evolution of Giant Molecular Filaments [PDF]

, 2017
In recent years there has been a growing interest in studying giant molecular filaments (GMFs), which are extremely elongated (> 100pc in length) giant molecular clouds (GMCs).
Dobbs, C. L., Duarte-Cabral, A.
core   +2 more sources

Elusive data underlying debate at the prokaryote-eukaryote divide

Biology Direct, 2018
Background The origin of eukaryotic cells was an important transition in evolution. The factors underlying the origin and evolutionary success of the eukaryote lineage are still discussed.
Marie Gerlitz, Michael Knopp, Nils Kapust, Joana C. Xavier, William F. Martin   +4 more
doaj   +1 more source

W(h)ither Fossils? Studying Morphological Character Evolution in the Age of Molecular Sequences [PDF]

, 2008
A major challenge in the post-genomics era will be to integrate molecular sequence data from extant organisms with morphological data from fossil and extant taxa into a single, coherent picture of phylogenetic relationships; only then will these ...
Bull J. J., Cuevas J., Desutter-Grandcolas L., Eernisse D. J., Elizabeth J. Hermsen, Giribet G., Grande L., Hedges S. B., Hermsen E. J., Horovitz I., Horovitz I., Jonathan R. Hendricks, Luckow M., Montgelard C., Norell M. A., Novacek M. J., O'Leary M., Rowe T., Simmons N. B., Wiens J. J., Xiang Q-Y. J., Zhang J.   +21 more
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Selective pressures on genomes in molecular evolution [PDF]

, 2003
We describe the evolution of macromolecules as an information transmission process and apply tools from Shannon information theory to it. This allows us to isolate three independent, competing selective pressures that we term compression, transmission ...
Adami, Adami, Adami, Ancel, Baake, Baake, Burch, Bürger, Cavalier-Smith, Charles Ofria, Christoph Adami, Clarke, Dawkins, Gatlin, Gerhart, Gibson, Kimura, Lenski, Mather, Mills, Modiano, Pavesi, Queitsch, Rutherford, Schneider, Schneider, Travis C. Collier, van Nimwegen, Waddington, Wagner, Wagner, Wilke, Wilke, Wilke, Wilke   +34 more
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Integrating influenza antigenic dynamics with molecular evolution. [PDF]

, 2013
Influenza viruses undergo continual antigenic evolution allowing mutant viruses to evade host immunity acquired to previous virus strains. Antigenic phenotype is often assessed through pairwise measurement of cross-reactivity between influenza strains ...
Abed, Ansaldi, Ansaldi, Barr, Barr, Bedford, Bedford, Bogner, Borodin, Cai, Centers for Disease Control and Prevention, Chakraverty, Chakraverty, Cox, Cox, Daniels, Daum, Daum, Donatelli, Drummond, Edgar, Ferguson, Fitch, Gog, Goldstein, Gust, Hay, Hay, Hay, Hay, Hay, Hay, Hay, Hay, Hay, Hay, Hay, Hay, Hay, Hay, Hensley, Hirst, Kanegae, Kendal, Klimov, Koel, Lemey, Li, Lin, Lin, Lin, Lin, Matsuzaki, McCauley, McCauley, McCauley, McCauley, McCauley, McDonald, Muyanga, Nakagawa, Nakajima, Nakajima, Nakajima, Nelson, Nerome, Oh, Osterholm, Pagel, Pereira, Puzelli, Pybus, Raymond, Rota, Russell, Shapiro, Shaw, Smith, Squires, Stevens, Webster, Wiley, World Health Organization, Xu   +83 more
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A Hierarchical Approach to Protein Molecular Evolution [PDF]

, 1999
Biological diversity has evolved despite the essentially infinite complexity of protein sequence space. We present a hierarchical approach to the efficient searching of this space and quantify the evolutionary potential of our approach with Monte Carlo ...
Crameri, Cwirla, Davidson, Devlin, Fisch, Gilbert, Gilbert, Gram, Griffiths, Hawkins, Kamtekar, Kauffman, Kauffman, Kepler, L. D. Bogarad, Lawrence, M. W. Deem, Maeshiro, Mandecki, Moore, Netzer, Patten, Pennisi, Perelson, Riddle, Scott, Shapiro, Shapiro, Stemmer, Stemmer, Zhang   +30 more
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Plastid origin: who, when and why?

Acta Societatis Botanicorum Poloniae, 2014
The origin of plastids is best explained by endosymbiotic theory, which dates back to the early 1900s. Three lines of evidence based on protein import machineries and molecular phylogenies of eukaryote (host) and cyanobacterial (endosymbiont) genes point
Chuan Ku, Mayo Roettger, Verena Zimorski, Shijulal Nelson-Sathi, Filipa L. Sousa, William F. Martin   +5 more
doaj   +1 more source