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The Genome of Deep-Sea Vent Chemolithoautotroph Thiomicrospira crunogena XCL-2
The genome of Thiomicrospira crunogena XCL-2 is unusual among obligate sulfur-oxidizing bacteria in relying on the Sox system for the oxidation of reduced sulfur compounds, including few transporters predicted to have organic allocrits, and Calvin-Benson-Bassham cycle CDSs scattered throughout the genome.
Comparative evolutionary genomics unveils the molecular mechanism of reassignment of the CTG codon in Candida spp.
Using the (near) complete genome sequences of the yeasts Candida albicans, Saccharomyces cerevisiae, and Schizosaccharomyces pombe, we address the evolution of a unique genetic code change, which…
The symbiotic chloroplasts in the sacoglossan Elysia clarki are from several algal species
Results clearly demonstrate that specimens of E. clarki sequester chloroplasts from four different species of algae, representing two genera: Penicillus lamourouxii, P. capitatus, Halimeda incrassata, and H. monile.
Driving change: the evolution of alternative genetic codes.
A Neutral Origin for Error Minimization in the Genetic Code
- S. Massey
- BiologyJournal of Molecular Evolution
- 15 October 2008
It is demonstrated that a substantial proportion of error minimization is likely to have arisen neutrally, simply as a consequence of code expansion, facilitated by duplication of the genes encoding adaptor molecules and charging enzymes, implying that selection is at best only partly responsible for the property oferror minimization.
Keeping the blood flowing—plasminogen activator genes and feeding behavior in vampire bats
The evolution of vampire bat plasminogen activators can now be linked phylogenetically to the transition in feeding behavior among vampire bat species from bird to mammalian blood.
Paleomicrobiology: Revealing Fecal Microbiomes of Ancient Indigenous Cultures
The present study shows that ancient DNA is not entirely degraded in humid, tropical environments, and that dietary and/or host genetic differences in ancient populations may be reflected in the composition of their gut microbiome.
The neutral emergence of error minimized genetic codes superior to the standard genetic code.
- S. Massey
- BiologyJournal of theoretical biology
- 7 November 2016
How to ‘find’ an error minimized genetic code: neutral emergence as an alternative to direct Darwinian selection for evolutionary optimization
- S. Massey
- BiologyNatural Computing
- 1 March 2019
How evolutionary optimization in biological systems is not restricted to direct selection, and that additional processes may lead to the production of beneficial traits, via ‘non-Darwinian optimization’ is clarified.
Elevated levels of adaption in Helicobacter pylori genomes from Japan; a link to higher incidences of gastric cancer?
Investigating how H.pylori has coevolved with its host during that time focusing on strains from Japanese and European populations implies a stronger overall adaptive pressure, potentially resulting from an elevated immune response which may be linked to increased inflammation, an initial stage in the development of gastric cancer.