circadian rhythms

Public Heath Fascism vs Creationism (1)

More than 114,000 indexed publications that mention “microRNA” link energy-dependent biophysically constrained viral latency to all biodiversity on Earth via ecological adaptations. See: microRNA Ask “Where did the energy come from?” Difference and similarities linked to energy-dependent epigenetic imprinting across kingdoms were placed into the context of: Structural basis for the final steps of human 40S ribosome maturation 11/18/20 This was reported as: Human ribosome assembly has no counterparts in simpler model organisms 11/23/20 This demonstrates the importance of considering…

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From photons to the proton motive force (1)

Conclusion: If you would like to learn how to link quantized energy-dependent changes in atoms to ecosystems in all living genera via the physiology of reproduction, join others age 10+ who will be playing this game in September 2018. Fly’s Blood-Brain Barrier Has Circadian Rhythms “the anatomic characteristics of insect and vertebrate BBB structures are quite distinct.” The molecular mechanisms are conserved. My comment to The Scientist: Feedback of the Drosophila period gene product on circadian cycling of its messenger…

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Base pairs, amino acids and phenotypes

Holliday junction trap shows how cells use recombination and a junction-guardian role of RecQ helicase DNA repair by homologous recombination (HR) underpins cell survival and fuels genome instability, cancer, and evolution. Autophagy is the established link from energy-dependent changes in base pairs and RNA-mediated amino acid substitutions to DNA repair in the context of polycombic ecological adaptations that prevent the hecatombic evolution of virus-driven pathology. Inventing new detailed models of DNA repair serves only to confuse those who have already…

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Base pairs, olfaction and RNA thermometers

RNA thermometer controls temperature-dependent virulence factor expression in Vibrio cholerae (2014) Excerpt: The stem-loop can be stabilized by strengthening the base pairing between the fourU element and SD sequence through the substitution of G-C base pairs, and this results in an elevated melting temperature (10). Conclusion: RNA thermometers represent a simple yet elegant mechanism for controlling temperature-dependent gene expression and may be more widespread among pathogenic bacteria that interact with mammalian hosts than is currently known. See also:  MicroRNA Stability…

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Model vs theory: Progress report!

On June 14, 2013, 1) Nutrient-dependent/pheromone-controlled adaptive evolution: a model and 2) Mutation-Driven Evolution were published with divergent/opposite conclusions. 1) …the largest contributor to the development of our personal preferences may be the unconscious epigenetic effects of food odors and pheromones on hormones that organize and activate behavior. If so, the model represented here is consistent with what is known about the epigenetic effects of ecologically important nutrients and pheromones on the adaptively evolved behavior of species from microbes to…

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Ricki Lewis’ Time Machine

Can a Quirky Chromosome Create a Second Human Species? Excerpt 1) The first departure from the common house mouse (Mus musculus) was the “tobacco mouse” (Mus poschiavinus), described in 1869 from specimens trapped in a tobacco factory in Valle di Poschiavo, Switzerland. They had big heads and small, dark bodies. Excerpt 2) I spoke to Bear back in 2004, again for The Scientist (a mechanism for the rapid extinction of a dedicated freelance writer is a change in editor-in-chief). Greg Bear is…

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Cytogenetic approaches link biosystems to ecosystems

Cytogenetic approaches for determining ecological stress in aquatic and terrestrial biosystems (Original Russian Text E.V. Daev, A.V. Dukelskaya, L.V. Barabanova, 2014, published in Ecologicheskaya Genetika, 2014, Vol. 12, No. 2, pp. 3–12.) For comparison see this open access review: Assessing vertebrate biodiversity in a kelp forest ecosystem using environmental DNA The Russian group seemed to me to be ~20 years ahead of the US-based research group. Eugene Daev explained the differences in the approach taken in the two published works.…

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Amino acid substitutions, stress, and human behavior

Stress dynamically regulates behavior and glutamatergic gene expression in hippocampus by opening a window of epigenetic plasticity Excerpt: …33% of the human population present a BDNF Val66Met SNP that leads to a valine-to-methionine substitution in the BDNF protein at codon 66, and this SNP has been associated with increased susceptibility to development of stress-related disorders (21, 22). Reported as: Newly discovered windows of brain plasticity may help with treatment of stress-related disorders Excerpt: The researchers also identified the molecule regulating…

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RNA-mediated theory killers (11) (12) (13) (14) (15)

Historical perspective Scent of a Book Deal (1995) Excerpt: The search for love the second time around can sometimes lead to scientific as well as romantic inspiration. At least, that’s what happened to James Vaughn Kohl, coauthor of the recently published volume The Scent of Eros (New York, Continuum Publishing Co., 1995). In a press release accompanying the book, Kohl-who manages a clinical laboratory for a group of physicians at Partell Medical Center in Las Vegas-writes, “My scientific interest in…

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Assumptions prove ignorance

Testing Einstein’s Equivalence Principle With Fast Radio Bursts Excerpt: Assuming as a lower limit that the time delays are caused mainly by the gravitational potential of the Milky Way, we prove that fast radio bursts (FRBs) of cosmological origin can be used to constrain the EEP with high accuracy. My comment: Theoretical physicists are allowed to start with assumptions and link them to theories via what they consider to be proof of their assumptions. Unfortunately, the proof of their assumptions…

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