Easy editing: Reinventing our RNA world

Easy DNA Editing Will Remake the World. Buckle Up. Excerpt: Most present-day animals and plants defend themselves against viruses with structures made out of RNA. My comment: RNA-mediated gene duplication and fixation of  RNA-mediated amino acid substitutions in the context of the nutrient-dependent physiology of learning, memory, and reproduction links the biophysically constrained chemistry of cell type differentiation in all genera via conserved molecular mechanisms. That fact was integrated into the science fiction novel Blood Music by Greg Bear, who…

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Riding the wrong direction

Riding the Evolution Paradigm Shift With Eugene Koonin Excerpt: The entire evolution of the microbial world and the virus world, and the interaction between microbes and viruses and other life forms have been left out of the Modern Synthesis… Excerpt: [T]he entire ideology of personalized medicine should be taken with many grains of salt. My comment: Personalized medicine links the conserved molecular mechanisms of biologically-based cause and effect from nutrient-dependent RNA-mediated gene duplication to RNA-mediated amino acid substitutions, which differentiate…

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RNA-mediated gene duplication, fixation, and ecological adaptation

Chromosomal Arrangement of Phosphorelay Genes Couples Sporulation and DNA Replication Excerpt: The simplicity of this coordination mechanism suggests that it may be widely applicable in a variety of gene regulatory and stress-response settings. Reported as: Bacteria use DNA replication to time key decision Excerpt: “Successful sporulation requires two complete copies of the bacterial chromosome, so coordination between the sporulation decision and the completion of DNA replication is very important,” Narula said. “A good analogy might be a semester-long course in…

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“New” epigenetic mechanism for lifelong learning?

Critical Role of Histone Turnover in Neuronal Transcription and Plasticity Reported as: Lifelong learning is made possible by recycling of histones, study says Also reported as: New epigenetic mechanism revealed in brain cells Excerpt: In humans, researchers used a technique called 14C/12C bomb pulse dating to measure turnover. The technique is based on the fact that high levels of radioactive carbon (14C) were released into the atmosphere during the 1950s and 1960s, when open-air nuclear bomb testing occurred following the…

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Protein folding and Google page rank has been on the first page of a Google search for “pheromones” for several months. See: Today, appeared on the first page of a Google search for “RNA mediated” See: My domains may remain in a key position for information dissemination, or they may be placed into the background by Google’s algorithms. In either case, it has become clear that RNA-mediated events link the nutrient-dependent pheromone-controlled physiology of reproduction to biodiversity in species from microbes to…

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Alternative splicings: epigenetics meets pharmacogenomics

Alternative splicing [is] …a regulated process during gene expression that results in a single gene coding for multiple proteins… [T]he proteins translated from alternatively spliced mRNAs will contain differences in their amino acid sequence and, often, in their biological functions…. See also: Alternative RNA Splicing in Evolution Excerpt: It now appears that alternative splicing is, perhaps, the most critical evolutionary factor determining the differences between human beings and other creatures. See also: From Fertilization to Adult Sexual Behavior Excerpt: Small…

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Epigenetic regulation of aging by glycine and GnRH

Summary:  “…the regulation of two genes involved with the production of glycine, the smallest and simplest amino acid, is partly responsible for some of the characteristics of aging. This indicates that the aging process in the mitochondrion is controlled by epigenetic regulation, not by mutations.” My comment: The broad-based extension of the fact that aging is epigenetically controlled, extends everything known about RNA-mediated cell type differentiation across the life history transitions of all genera. The focus here is on vertebrates,…

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Viruses and the human-like microbiome

Ocean’s microbiome has incredible diversity – and human likeness Excerpt: The microbiome of the world’s biggest ecosystem and one of the smallest appear to function in surprisingly similar ways. The New Scientist article  reports on: Structure and function of the global ocean microbiome Journal article abstract conclusion: …vertical stratification with epipelagic community composition mostly driven by temperature rather than other environmental factors or geography. We identify ocean microbial core functionality and reveal that >73% of its abundance is shared with…

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Ignoring systems complexity (it’s too complicated)

Host, heal thyself: Immune system self-organizes to minimize biological cost of pathogenic infections Excerpt 1) This approach allowed the scientists to create a new framework that makes it unnecessary to explicitly model intracellular communication, cell differentiation, activation of cofactors, coordination of different cell types, the interaction with the innate immune system, and the full complexity of the recognition process. My comment: Population geneticists took that approach when they invented neo-Darwinian evolution. They eliminated all aspects of nutrient-dependent cell type differentiation…

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Virus-driven cancer treatment and prevention

Blocking a metabolic pathway may shrink aggressive form of common kidney cancer Excerpt: ..the cancer cells appear to rely primarily on the metabolism of an amino acid called glutamine for their energy. My comment:  This links differences in hydrogen atom energies and the anti-entropic epigenetic effect of nutrient energy to virus-driven differences in the metabolism of glutamine and DNA repair. Those differences link viral microRNAs to entropic elasticity. The differences also link nutrient-dependent microRNAs to the stability of organized genomes…

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  • Randomness and Divine Providence
    A Q&A on randomness and God’s providence …the main goal is to really put together a collection of scholarly studies of these issues: physicists, biologists, […]